DOCSLIB.ORG

Friction Stir Welding of 2024 Aluminum Alloy to 2198 Aluminum-Lithium Alloy Mahdi MASOUMI KHALILABAD

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Friction Stir Welding of 2024 Aluminum Alloy to 2198 Aluminum-Lithium Alloy Mahdi MASOUMI KHALILABAD Friction Stir Welding of 2024 Aluminum Alloy to 2198 Aluminum-Lithium Alloy by Mahdi MASOUMI KHALILABAD THESIS PRESENTED TO ÉCOLE DE TECHNOLOGIE SUPÉRIEURE IN PARTIAL FULFILLMENT FOR A MASTER’S DEGREE WITH THESIS IN MECHANICAL ENGINEERING M.A.Sc. MONTREAL, August, 25 2017 ÉCOLE DE TECHNOLOGIE SUPÉRIEURE UNIVERSITÉ DU QUÉBEC Mahdi Masoumi Khalilabad, 2017 This Creative Commons license allows readers to download this work and share it with others as long as the author is credited. The content of this work can’t be modified in any way or used commercially. BOARD OF EXAMINERS THIS THESIS HAS BEEN EVALUATED BY THE FOLLOWING BOARD OF EXAMINERS Mr. Philippe Bocher, Thesis Supervisor Département de génie mécanique at École de technologie supérieure Mr. Mohammad Jahazi, Thesis Co-supervisor Département de génie mécanique at École de technologie supérieure Mr. Jean-François Chatelain, President of the Board of Examiners Département de génie mécanique at École de technologie supérieure Mr. Ricardo Zednik, Member of the jury Département de génie mécanique at École de technologie supérieure THIS THESIS WAS PRENSENTED AND DEFENDED IN THE PRESENCE OF A BOARD OF EXAMINERS AND PUBLIC AUGUST 18, 2017 AT ÉCOLE DE TECHNOLOGIE SUPÉRIEURE ACKNOWLEDGMENT The author would like to thank M.A.Sc research director, Professor Philippe Bocher and co- director, for their guidance, support and expertise during the degree, without which none of this would have been possible. Gratitude is also expressed for Yasser Zedan, Damien Texier, Ludovic Diez-Jahier, Remi Bertrand, Hossein Monajati, Eric Marcoux and Michel Orsini, for their cooperation the entire duration of the diploma. A part of the research presented in this paper was financed by the Fonds de recherche du Québec – Nature et technologies by the intermediary of the Aluminum Research Centre – REGAL that without their valuable assistance, this work would not have been completed. SOUDAGE PAR FRICTION DES MATÉRIAUX AA2024 ET AL-Li 2198 Mahdi MASOUMI KHALILABAD RÉSUMÉ L'amélioration des propriétés mécaniques des structures hybrides fabriquées par soudage par friction (FSW) des matériaux AA2198 et AA2024 est l'objectif de cette recherche. Différentes conceptions d'outils, paramètres de vitesse de soudage, traitements thermiques en métal de base (T8 et T3) et après soudure (PWHT) ont été étudiés afin d'améliorer les propriétés mécaniques de l'articulation. La tige cylindrique conique avec un épaulement de ventilateur surélevé était la configuration optimale de la conception d'outil en termes de limite d'élasticité et d'élongation. Une gamme de paramètres de vitesse de soudage a ensuite été étudiée pour la conception optimale de l'outil pour trouver des conditions de soudure appropriées. L'efficacité de l'assemblage peut atteindre jusqu'à 78% en choisissant des paramètres de vitesse de soudage optimum de 750 tr / min et 450 mm.min-1. On observe que l'utilisation des plaques en T3 ou en T8 créera des joints avec des propriétés mécaniques similaire en raison de la perte de propriétés mécaniques dans TMAZ / HAZ du côté AA2198. T8 PWHT avec et sans précontrainte a été appliqué sur des échantillons soudés dans des conditions T3 pour récupérer les propriétés mécaniques des zones articulaires. Les deux processus T8 PWHT ont amélioré la dureté du TMAZ / HAZ du côté AA2198 alors qu'ils n'avaient aucun effet positif sur TMAZ / HAZ du côté AA2024 et les propriétés mécaniques finales ne s'améliorent pas. On peut conclure que T8 PWHT n'est pas efficace pour l'articulation différente AA2024-AA2198. De plus, la répartition de la température dans la pièce a été étudiée avec la méthode des éléments finis. La simulation montre que le refroidissement pendant le soudage pourrait être efficace pour améliorer les propriétés mécaniques des articulations en diminuant la température maximale et le temps d'exposition à la chaleur. Mots-clés : AA2024, AA2198, DIC, soudage par friction, traitements thermiques, simulation FRICTION STIR WELDING OF 2024 ALUMINUM ALLOY TO 2198 ALUMINUM- LITHIUM ALLOY Mahdi MASOUMI KHALILABAD ABSTRACT Mechanical properties improvement of the hybrid structures made by friction stir welding (FSW) of AA2198 and AA2024 materials is the goal of this research. Different tool designs, welding speed parameters, base metal heat treatment (T8 and T3) and post weld heat treatment (PWHT) were investigated in order to improve the mechanical properties of the joint. The tapered cylindrical pin with a raised fan shoulder was the optimal tool design configuration in terms of yield strength and elongation. A range of welding speed parameters was subsequently studied for the optimum tool design to find appropriate welding conditions. The joint efficiency can reach up to 78% by choosing optimum welding speed parameters of 750 RPM and 450 mm.min-1. It is observed that employing the plates in T3 or T8 will create joints with similar mechanical properties due to loss of mechanical properties in TMAZ/HAZ of AA2198 side. T8 PWHT with and without pre-straining was applied on welded samples in T3 conditions to recover the mechanical properties of joint areas. Both T8 PWHT process improved the hardness of TMAZ/HAZ of AA2198 side while they have not positive effect on TMAZ/HAZ of AA2024 side and the final mechanical properties did not improve. It can be concluded that T8 PWHT is not effective for the AA2024-AA2198 dissimilar joint. Besides, the temperature distribution of workpiece was achieved through FEM simulation. The simulation shows that cooling during welding could be effective for improving the joint mechanical properties by decreasing peak temperature and heat exposure time. Keywords: AA2024, AA2198, DIC, friction stir welding, post weld heat treatment, simulation TABLE OF CONTENTS Page INTRODUCTION .....................................................................................................................1 CHAPTER 1 LITERATURE REVIEW ....................................................................................3 1.1 Historical Development of Al-Li alloys ........................................................................3 1.1.1 First generation of AL-Li alloys ................................................................. 3 1.1.2 Second generation of aluminum- lithium alloys ......................................... 4 1.1.3 Third generation of aluminum- lithium alloys ............................................ 5 1.2 Friction Stir welding process .........................................................................................9 1.2.1 Welding joint zones .................................................................................. 10 1.2.2 Friction stir welding process parameters .................................................. 11 1.2.3 Friction stir welding imperfections ........................................................... 25 1.2.4 Characterization of AA2198 to AA2024 joint .......................................... 29 1.3 Base metal heat treatment and post weld heat treatment .............................................31 1.4 Summaries....................................................................................................................32 CHAPTER 2 EXPERIMENTAL PROCEDURES, MATERIALS AND METHODS ...........35 2.1 Introduction ..................................................................................................................35 2.2 Tools and fixture designs .............................................................................................35 2.3 Base materials ..............................................................................................................39 2.4 Welding process ...........................................................................................................39 2.5 Base metal heat treatment and post weld heat treatment .............................................40 2.6 Sample preparation ......................................................................................................41 2.7 Temperature measurement ...........................................................................................42 CHAPTER 3 TOOL SELECTION FOR JOINING AA2198 TO AA2024 ............................43 3.1 Introduction ..................................................................................................................43 3.2 Surface finish quality ...................................................................................................43 3.3 Microstructure and microhardness maps .....................................................................44 3.4 Tensile test ...................................................................................................................47 3.5 Fractography ................................................................................................................49 3.6 Nugget size and material flow .....................................................................................50 3.7 Conclusions ..................................................................................................................50 CHAPTER 4 OPTIMIZATION OF WELDING SPEED PARAMETERS ............................51 4.1 Introduction ..................................................................................................................51 4.2 Joint macrograph ..........................................................................................................51 4.3 Microhardness map ......................................................................................................52
Load more

Recommended publications
  • Contribution À La Caractérisation Thermique Et Mécanique De La Zone Soudée En FSW Nejah Jemal
    Contribution à la caractérisation thermique et mécanique de la zone soudée en FSW Nejah Jemal To cite this version: Nejah Jemal. Contribution à la caractérisation thermique et mécanique de la zone soudée en FSW. Génie mécanique [physics.class-ph]. Arts et Métiers ParisTech, 2011. Français. NNT : 2011ENAM0046. pastel-00766216 HAL Id: pastel-00766216 https://pastel.archives-ouvertes.fr/pastel-00766216 Submitted on 17 Dec 2012 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. 2011-ENAM-0046 École doctorale n° 432 : Sciences des Métiers de l’Ingénieur Doctorat ParisTech T H È S E pour obtenir le grade de docteur délivré par l’École Nationale Supérieure d'Arts et Métiers Spécialité “ Génie Mécanique ” présentée et soutenue publiquement par Nejah JEMAL le 13 décembre 2011 Qualification du domaine de soudabilité en soudage par friction malaxage Directeur de thèse : Franck GIROT Co-encadrement de la thèse : Laurent LANGLOIS Co-encadrement de la thèse : Jean-Eric MASSE Jury M. Abdellatif IMAD, Professeur, LML, Polytech Lille Président T M. Christophe DESRAYAUD, Professeur, LCG, Ecole des Mines de Saint-Etienne Rapporteur M. Guillaume RACINEUX, Professeur, GeM, Ecole Centrale Nantes Rapporteur H M.
    [Show full text]
  • O Rigin Al a Rticle
    International Journal of Mechanical and Production Engineering Research and Development (IJMPERD) ISSN (P): 2249–6890; ISSN (E): 2249–8001 Vol. 9, Issue 6, Dec 2019, 627–642 © TJPRC Pvt. Ltd. THE EFFECT OF ADDING MAGNESIUM TO THE FILLER MATERIAL ON THE TENSILE PROPERTIES OF TIG WELDED AA 6082 ALUMINIUM ALLOY SUDHEESH. N1 & K. THIRUNAVUKKARASU 2 1Research Scholar, Department of Mechanical Engineering, Karpagam Academy of Higher Education, Coimbatore, India 2Senior Professor, Department of Mechanical Engineering, Karpagam Academy of Higher Education, Coimbatore, India ABSTRACT Aluminium 6082 is a moderate strength alloy with good weldability. Tungsten inert gas (TIG) welding is the most common welding process of this alloy. AA6082 is one of the major alloys used in automotive, shipbuilding, aircraft and structural applications. Tensile strength of welded joints is an important design parameter when it is used for these applications. ER 4043, which contains 5% silicon as major alloying element and ER5356, which contains 5% magnesium as major alloying element, are the most common filler materials used for the welding of AA6082 alloys. In the present investigation, magnesium is added to silicon- based ER 4043 filler wire at different percentage levels, and this new filler wire with altered chemical Original Article Original composition is used for welding of 6082 aluminium plates. The effect of adding magnesium to the filler wire is investigated by using design of experiments. From experiments it is found that this new filler wire is capable of providing higher tensile strength for the welded joint. It is found that the increase in the tensile strength is due to the formation of magnesium silicide intermetallic phase in the weld zone.
    [Show full text]
  • High Cycle Fatigue of AA6082 and AA6063 Aluminum Extrusions
    Michigan Technological University Digital Commons @ Michigan Tech Dissertations, Master's Theses and Master's Dissertations, Master's Theses and Master's Reports - Open Reports 2008 High cycle fatigue of AA6082 and AA6063 aluminum extrusions Nicholas E. Nanninga Michigan Technological University Follow this and additional works at: https://digitalcommons.mtu.edu/etds Part of the Engineering Science and Materials Commons Copyright 2008 Nicholas E. Nanninga Recommended Citation Nanninga, Nicholas E., "High cycle fatigue of AA6082 and AA6063 aluminum extrusions ", Dissertation, Michigan Technological University, 2008. https://doi.org/10.37099/mtu.dc.etds/18 Follow this and additional works at: https://digitalcommons.mtu.edu/etds Part of the Engineering Science and Materials Commons HIGH CYCLE FATIGUE OF AA6082 AND AA6063 ALUMINUM EXTRUSIONS By Nicholas E. Nanninga A DISSERTATION Submitted in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY (Materials Science and Engineering) MICHIGAN TECHNOLOGICAL UNIVERSITY 2008 Copyright©Nicholas E. Nanninga 2008 This dissertation, "High cycle fatigue behavior of AA6082 and AA6063 aluminum extrusions," is hereby approved in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY in the field of Materials Science and Engineering. DEPARTMENT: Materials Science and Engineering Signatures: Dissertation Advisor Typewritten Name Calvin L. White Department Chair Typewritten Name Mark R. Plichta. Date Abstract The high cycle fatigue behavior of hollow extruded AA6082 and AA6063 aluminum extrusions has been studied. Hollow extruded aluminum profiles can be processed into intricate shapes, and may be suitable replacements for fatigue critical automotive applications requiring reduced weight. There are several features inherent in hollow aluminum extrusions, such as seam welds, charge welds, microstructural variations and die lines.
    [Show full text]
  • A Review of Microstructural Changes Occurring During FSW in Aluminium Alloys and Their Modelling Dimitri Jacquin, Gildas Guillemot
    A review of microstructural changes occurring during FSW in aluminium alloys and their modelling Dimitri Jacquin, Gildas Guillemot To cite this version: Dimitri Jacquin, Gildas Guillemot. A review of microstructural changes occurring during FSW in aluminium alloys and their modelling. Journal of Materials Processing Technology, Elsevier, 2021, 288, pp.116706. 10.1016/j.jmatprotec.2020.116706. hal-02911059 HAL Id: hal-02911059 https://hal.archives-ouvertes.fr/hal-02911059 Submitted on 3 Aug 2020 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. A review of microstructural changes occurring during FSW in aluminium alloys and their modelling Dimitri Jacquin a) Gildas Guillemot b) a) University of Bordeaux, I2M CNRS, Site IUT, 15, rue Naudet - CS 10207, 33175 Gradignan Cedex, France b) MINES ParisTech, PSL Research University, CEMEF UMR CNRS 7635, CS10207, 06904 Sophia Antipolis, France Abstract: Friction stir welding (FSW) process is currently considered as a promising alternative to join aluminium alloys. Indeed, this solid-state welding technique is particularly recommended for the assembly of these materials. Since parts are not heated above their melting temperature, FSW process may prevent solidification defects encountered in joining aluminium alloys and known as limitations to the dissemination of these materials in industries.
    [Show full text]
  • Dyuthi T-2461.Pdf
    EFFECT OF PROCESS PARAMETERS ON FRICTION STIR WELDING OF ALUMINIUM ALLOYS A THESIS Submitted by SREENIVAS P for the award of the degree of DOCTOR OF PHILOSOPHY MECHANICAL ENGINEERING DIVISION SCHOOL OF ENGINEERING COCHIN UNIVERSITY OF SCIENCE AND TECHNOLOGY, KOCHI DECEMBER 2017 CERTIFICTE This is to certify that the thesis entitled EFFECT OF PROCESS PARAMETERS ON FRICTION STIR WELDING OF ALUMINIUM ALLOYS submitted by Sreenivas P to the Cochin University of Science and Technology, Kochi for the award of the degree of Doctor of Philosophy is a bonafide record of research work carried out by him under my supervision and guidance at the Division of Mechanical Engineering, School of Engineering, Cochin University of Science and Technology. The contents of this thesis, in full or in parts, have not been submitted to any other University or Institute for the award of any degree or diploma. All the relevant corrections and modifications suggested by the audience during the pre- synopsis seminar and recommended by the Doctoral committee have been incorporated in this thesis. Kochi-682022 Dr P S Sreejith Date Professor & Dean Faculty of Engineering Cochin University of Science and Engineering Research Guide Dedicated to :- My Guru H H Swami Thuriya Chaithanaya DECLARATION I hereby declare that the work presented in the thesis entitled EFFECT OF PROCESS PARAMETERS ON FRICTION STIR WELDING OF ALUMINIUM ALLOYS is based on the research work carried out by me under the supervision and guidance of Dr. P S Sreejith for the award of degree of Doctor of Philosophy with Cochin University of Science and Technology. I further declare that the contents of this thesis, in full or in parts, have not been submitted to any other University or Institute for the award of any degree or diploma.
    [Show full text]
  • Mechanical Properties of Friction Stir Welded Dissimilar Aluminium Alloys (1050 and 5083 Aluminium Alloy Plates)
    Mechanical properties of friction stir welded dissimilar aluminium alloys (1050 and 5083 aluminium alloy plates) by Nontle Mbana Thesis submitted in fulfilment of the requirements for the degree Master of Engineering: Mechanical Engineering in the Faculty of Engineering at the Cape Peninsula University of Technology Supervisor: Dr V Msomi Bellville Campus 06 September 2019 CPUT copyright information The dissertation/thesis may not be published either in part (in scholarly, scientific or technical journals), or as a whole (as a monograph), unless permission has been obtained from the University Declaration I, Nontle Mbana, declare that the contents of this dissertation/thesis represent my own unaided work, and that the dissertation/thesis has not previously been submitted for academic examination towards any qualification. Furthermore, it represents my own opinions and not necessarily those of the Cape Peninsula University of Technology. N Mbana 06 September 2019 Signed Date i Abstract Friction stir welding is a solid-state joining process. This welding technique is energy efficient and environmentally friendly. It is also categorized as the best welding technique when compared to other conventional welding techniques. FSW does not face problems faced by the other conventional welding techniques like the solidification process, the loss of alloying elements, the presence of segregation, porosities, blowhole and cracks formed in the weld joint. It can also be used to join high strength aerospace aluminium alloys and other metallic alloys that are hard to weld by conventional welding. Friction stir welding is considered to be the most important development in the welding of aluminium alloys. Generally, the mechanical properties of conventionally welded aluminium joints are poor and not attractive.
    [Show full text]
  • An Investigation on the Optimum Aging Condition for HFQ-Processed
    An Investigation on the Optimum Aging Condition for HFQ-processed AA6082 Aluminium Alloy A thesis submitted to the University of Birmingham for the degree of MSc by research by Yuan Liang School of Metallurgy and Materials College of Engineering and Physics Science University of Birmingham November 2016 University of Birmingham Research Archive e-theses repository This unpublished thesis/dissertation is copyright of the author and/or third parties. The intellectual property rights of the author or third parties in respect of this work are as defined by The Copyright Designs and Patents Act 1988 or as modified by any successor legislation. Any use made of information contained in this thesis/dissertation must be in accordance with that legislation and must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the permission of the copyright holder. SYNOPSIS The innovative solution heat treatment, forming and in-die quenching (HFQ) process combines die forming and quenching in one operation to reduce thermal distortion and spring back effects. However, the hardness of aged HFQ processed AA6082 components varied with the positions and the peak hardness of the product is lower than AA6082 in T6 condition. In this project, a Gleeble machine was used to simulate HFQ process to produce deformed AA6082 specimens with the strain ranging from 0 to 30%; a wide range of aging time at 180C was employed to identify the optimal aging time for a given strain; and a series of materials characterisation techniques were used to investigate the mechanism involved including XRD, optical microscopy, SEM, EDX, TEM.
    [Show full text]
  • CUMULATIVE INDEX September 1952 Through December 2014
    Materials Park, Ohio 44073-0002 :: 440.338.5151 :: Fax 440.338.8542 :: www.asminternational.org :: [email protected] Published by ASM International® :: Data shown are typical, not to be used for specification or final design. CUMULATIVE INDEX September 1952 through December 2014 Alphabetical listing by tradename or other designation and code number Alloy Steel Aluminum Beryllium Bismuth Carbon Steel Cast Iron Ceramic Chromium Cobalt Copper Gold Iron Lead Magnesium Molybdenum Nickel Neodymium Plastic Silver Stainless Steel Tin Titanium Tool Steel Tungsten Zinc Contents Alphabetical Index by Material Name Pages 3 through 33 Alphabetical Index within Material Group Pages 37 through 67 Copyright © 2015, ASM International®. All rights reserved. DATA ON WORLD WIDE METALS AND ALLOYS Published by ASM International® Materials Park, Ohio 44073-0002 [email protected] 440-338-5151, Fax 440-338-8542 www.asminternational.org Copyright © 2015 ASM International® All rights reserved No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the written permission of the copyright owner. Great care is taken in the compilation and production of this publication, but it should be made clear that NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, WITHOUT LIMITATION, WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE GIVEN IN CONNECTION WITH THIS PUBLICATION. Although this information is believed to be accurate by ASM, ASM cannot guarantee that favorable results will be obtained from the use of this publication alone. This publication is intended for use by persons having technical skill, at their sole discretion and risk.
    [Show full text]
  • Investigation of Thermo Mechanical Effect on Structure and Properties of Aluminium Alloy 6082
    SCIENTIFIC PROCEEDINGS IX INTERNATIONAL CONGRESS "MACHINES, TECHNOLОGIES, MATERIALS" 2012 ISSN 1310-3946 INVESTIGATION OF THERMO MECHANICAL EFFECT ON STRUCTURE AND PROPERTIES OF ALUMINIUM ALLOY 6082 ИССЛЕДОВАНИЕ ТЕРМОМЕХАНИЧЕСКОГО ЭФФЕКТА НА СТРУКТУРУ И СВОЙСТВА АЛЮМИНИЕВОГО СПЛАВА 6082 Assoc. Prof. Dr. Zvinys J.1, Assoc. Prof. Dr. Kandrotaite Janutiene R.1, Dr. Meskys J.2, Assoc. Prof. Dr. Juzenas K.1 Kaunas University of Technology1, Company “Precise Mechanical Technologies”2, Lithuania Abstract : Aluminium alloy 6082 is widely used for the automotive parts that work under the conditions of dynamic stress and cyclical loads. Automotive parts made from this alloy have to maintain high impact strength and hardness. High mechanical properties are achieved by thermo mechanical treatment when fibrous macrostructure and effect of precipitation hardening are obtained. This work deals with the investigation of changes of macrostructure and mechanical properties of alloy 6082 under various conditions: after quenching and artificial ageing; after plastic deformation, quenching and artificial ageing; after complete thermo-mechanical treatment. The results obtained will be used for the development of manufacturing technologies of the automotive parts. KEYWORDS: ALUMINIUM, ALLOY 6082, PRECIPITATION HARDENING, AUTOMOTIVE PARTS 1. Introduction may become a cornerstone on purpose to obtain eligible mechanical properties of the part. Some of the materials used for hot extruded automotive parts are light and strong aluminium alloys from 6XXX group. The main During thermo mechanical treatment of aluminium alloys some requirements for the alloy are sufficient plasticity for extrusion, specific structure defects – coarse recrystallized areas may occur high friction resistance in the slide pair with steel parts, ample [13, 14]. Recrystallized areas are mostly observed in the surface strength and resistance to the dynamic strains.
    [Show full text]
  • Solid-State Welding: Friction and Friction Stir Welding Processes Mechanical Engineering Series
    Mechanical Engineering Series Esther Titilayo Akinlabi Rasheedat Modupe Mahamood Solid-State Welding: Friction and Friction Stir Welding Processes Mechanical Engineering Series Series Editor Francis A. Kulacki, Department of Mechanical Engineering, University of Minnesota, Minneapolis, MN, USA The Mechanical Engineering Series presents advanced level treatment of topics on the cutting edge of mechanical engineering. Designed for use by students, researchers and practicing engineers, the series presents modern developments in mechanical engineering and its innovative applications in applied mechanics, bioengineering, dynamic systems and control, energy, energy conversion and energy systems, fluid mechanics and fluid machinery, heat and mass transfer, manufacturing science and technology, mechanical design, mechanics of materials, micro- and nano-science technology, thermal physics, tribology, and vibration and acoustics. The series features graduate-level texts, professional books, and research monographs in key engineering science concentrations. More information about this series at http://www.springer.com/series/1161 Esther Titilayo Akinlabi • Rasheedat Modupe Mahamood Solid-State Welding: Friction and Friction Stir Welding Processes 123 Esther Titilayo Akinlabi Rasheedat Modupe Mahamood Department of Mechanical Department of Mechanical Engineering Science Engineering Science University of Johannesburg University of Johannesburg Johannesburg, Gauteng, South Africa Johannesburg, Gauteng, South Africa Department of Mechanical Engineering
    [Show full text]
  • University of Huddersfield Repository
    View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by University of Huddersfield Repository University of Huddersfield Repository He, Xiaocong, Gu, Fengshou and Ball, Andrew A review of numerical analysis of friction stir welding Original Citation He, Xiaocong, Gu, Fengshou and Ball, Andrew (2014) A review of numerical analysis of friction stir welding. Progress in Materials Science, 65. pp. 1-66. ISSN 0079-6425 This version is available at http://eprints.hud.ac.uk/20954/ The University Repository is a digital collection of the research output of the University, available on Open Access. Copyright and Moral Rights for the items on this site are retained by the individual author and/or other copyright owners. Users may access full items free of charge; copies of full text items generally can be reproduced, displayed or performed and given to third parties in any format or medium for personal research or study, educational or not-for-profit purposes without prior permission or charge, provided: • The authors, title and full bibliographic details is credited in any copy; • A hyperlink and/or URL is included for the original metadata page; and • The content is not changed in any way. For more information, including our policy and submission procedure, please contact the Repository Team at: [email protected]. http://eprints.hud.ac.uk/ A Review of Numerical Analysis of Friction Stir Welding Xiaocong He1)※, Fengshou Gu 2), Andrew Ball 2) 1) Innovative Manufacturing Research Centre, Kunming University of Science and Technology, Kunming, 650500, P. R. China 2) Centre for Efficiency and Performance Engineering, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK.
    [Show full text]
  • Impact of Casting Parameters and Chemical Composition on the Solidification Behaviour of Al-Si-Cu Hypoeutectic Alloy
    Impact of casting parameters and chemical composition on the solidification behaviour of Al-Si-Cu hypoeutectic alloy Dissertation zur Erlangung des akademischen Grades Doktoringenieurin / Doktoringenieur (Dr.-Ing.) von Dipl.-Ing. Jelena Pavlovic-Krstic geb. am 02.01.1979. in Zajecar, Serbien genehmigt durch die Fakultät für Maschinenbau der Otto-von-Guericke-Universität Magdeburg Gutachter: Prof. Dr.-Ing. habil Rüdiger Bähr Prof. Dr.-Ing. Klaus Eigenfeld Dr.-Ing. Mile Djurdjevic Promotionskolloquium am 19.03.2010 Preface This Thesis was done at the University of Magdeburg, the Faculty of Mechanical Engineering, during my three years stay and involvement as a researcher at the Institute for Manufacturing Technologies and Quality Assurance. My PhD Thesis is focused on the solidification behaviour and the parameters controlling the solidification features of Al-Si-Cu alloy with special emphasis on the secondary dendrite arm spacing. Throughout the three years period of my PhD work, the results have been published in national and international journals as well as in national and international conference proceedings. The research and experimental work was carried out under the supervision of Prof. Dr.-Ing. Rüdiger Bähr. It is the greatest honour to be able to work under supervision of Prof. Dr.-Ing. Rüdiger Bähr. I am gratified him for accepting my application and involved me to work on the project in cooperation with the Nemak company from where come the major motivation for my PhD Thesis. I would like to thank Prof. Bähr for all of his help, assistance, inspiration and guidance on the all aspects. Beside Prof. Bähr, I own my special gratitude to Dr.-Ing.
    [Show full text]