DOCSLIB.ORG

Investigation of Magnetic Pulse Welding on Lap Joint

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Investigation of Magnetic Pulse Welding on Lap Joint Investigation of Magnetic Pulse Welding on Lap Joint of Similar and Dissimilar Materials Dissertation Presented in Partial Fulfillment of the Requirements for the Degree Doctor of Philosophy in the Graduate School of The Ohio State University By Yuan Zhang, B.S., M.S. Graduate Program in Materials Science and Engineering The Ohio State University 2010 Dissertation Committee: Dr. Glenn S. Daehn, Advisor Dr. Sudarsanam Suresh Babu, co-Advisor Dr. Michael J. Mills Dr. David Rigney Dr. Shelly D.Jepsen Copyright by Yuan Zhang 2010 Abstract The main objective of this research is to investigate the magnetic pulse welding (MPW) process, the resulting joint strength and the interface welding metallurgy. It is known that traditional fusion welding is not able to weld dissimilar materials with different thermal properties, but MPW has been applied to both similar and dissimilar materials. MPW is a solid state impact welding technology that may provide metallurgical bonding without melting and solidification, and there is no significant heat affected zone (HAZ). It shares the same physical principle with explosive welding (EXW) and is good for workpiece with length scale in the order of millimeter to centimeter. This research first compares three impact welding technologies, EXW, MPW and laser impact welding (LIW), for different length scale with different driving system. The joining is likely the result of an instability associated with jetting, which scours the surface clean during impact. It was found that the metallurgical bonding by oblique impact was only realized at the combination of certain impact velocity and impact angle. Taking 0.254mm thick copper alloy 110 plate to plate joint as an example, the suitable impact velocity was larger than 250m/s and the suitable impact angle was within 2º~7º. As a result, the joint interface undergoes high strain rate deformation and the strain rate was established in the order of 106~107s-1. In this research, aluminum alloy, copper alloy, and low carbon steel were ii welded by MPW using electromagnetic force to accelerate the metal. The strengths for both similar and dissimilar material joints were examined by lap shearing test, peeling test and microhardness test, and the similar materials joint was also tested by nanoindentation. The joint strength was greater than that of the base metals and the welded region was hardened by high velocity impact. The tensile failure and peeling failure were outside of the welded region. The welded interface microstructure was characterized by optical microscopy, scanning electron microscopy, electron backscatter diffraction, transmission electron microscopy, and field ion atom probe microscopy. The welded interface indicated wave interface morphology. Due to adiabatic heating and high strain rate deformation, the welded interface microstructure exhibited various features, including grain refinement with large grain boundary misorientation angle, formation of band structure, deformation twins, lamellar grains, and high dislocation density (~estimated to be 1011m-2). Similar materials welding suggested pure solid state bonding, while dissimilar materials joints sometimes contained small amount of intermetallic phase distributed discontinuously in the vertex region of certain waviness along the welded interface. In order to identify the coupled thermal, electromagnetic, and mechanical properties during the impact welding process, a finite element analysis was attempted via LS-DNYA®. Some of the simulation results were compared to the instrumented experiments and the validated model can be used to investigate the successful welding criterion with regard to the impact angle and impact velocity for other materials. iii Dedication In memory of my beloved grandmother, Ms. Fenying Zhang. 谨以此论文献给我挚爱的外祖母，张粉英女士。 iv Acknowledgements My study in the past four years cannot be completed without the help from many individuals and the financial support from American Welding Society. All these efforts help me go through the research work with great pleasure. First, I want to show great appreciation to my advisors Professor Glenn Daehn and Professor Sudarsanam Suresh Babu. They are always the constant source of guidance and support. They motivate me to think with critical perspective and to apply the text book knowledge on solving real problems. They offer me the chance to work on such interesting research topic and create many unique opportunities for me to explore aboard on materials science, all of which enriched my research work at OSU to be a worthwhile experience. After four years working together, I am deeply impressed by their global perspective, noble personalities, hard working, and their passion for discovery. I feel very lucky to have them not only as the mentors and role models, but also as the friends. Thank you, Glenn and Suresh, for your effort and faith on me. I thank Professor Michael Mills and Professor David Rigney for being my dissertation committee. I appreciate their kind help and useful discussions on my research work. I v also want to point out that it was a great pleasure to work as the teaching assistant twice for their Materials Characterization classes. It was not only a great teaching experience but also a nice training for my communication skills. I want to thank the assessment from American Welding Society (AWS) on the impact welding technology and my performance. It is a great honor to be one of the four winners among North American universities for AWS Fellowship Award since 2007. The generous financial support for continuous three years offers me the best opportunity to investigate magnetic pulse welding. I also highly appreciate the SHaRE program from Oak Ridge National Lab (ORNL) sponsored by the Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. Department of Energy, which allows me to use the state-of-the-art facilities freely. These unique opportunities helped me to understand the microstructure evaluation down to atomic level resolution. The scientists at ORNL are all very kind and they offered me nice help on my on-site working, and they are Dr. Michael Miller, Kaye Russell, Kathy Thomas, Dr. Ai Serizawa, Tom Geer, Dr. Ed Kenik, Dr. Hongbing Bei, and Dr. Sang Hoon Shim. It is a great experience to work with such nice and patient scientists. Thanks to Curtis Prothe, Micheal Blakely at Dynamic Materials Corporation and John Kwasegroch, Mike LaHa at Continuum Inc. for their help on the study of different length scales impact welding. Thanks to Pierre L’Eplattenier and Mike Burger at Livermore vi Software Technology Corporation for the great help on LS-DYNA simulation and TrueGrid Mesh. Both Pierre and Mike answered lots of my questions through phone calls and emails regardless the three hours time difference. The experiment work was also carried out with nice help from Ross Baldwin. He is always ready to help. He taught me how to use the facilities and suggested lots of smart approaches. I also want to thank Dan Huber, Hendrik Colijn, and Cameron Begg for their training on FIB, TEM and SEM, and Steve Bright for his help on sample polishing. From day one, I have obtained continuous help from Kathy Babusci. She takes care of the finical issues on my project and also helps me for proof readings on all of my writings. Thanks to the former and current electromagnetic forming group members, Peihui Zhang, Jianhui Shang, Manish Kamal, Mala Seth Dehra, Geoffrey Taber, Kinga Unocic, Scott Golowin, Kristin Banik, Jon Evarts, Jason Johnson, Anupam Vivek, Aaron Washburn, Huimin Wang, Shekhar Srinivasan, Bradley Kabert, Steven Woodward, and Christian Weddeling. Especially thanks to Peihui, she helped on the tubular welding and introduced me to EWI; thanks to Scott and Jianhui, they worked closely with me to help me adapt to new research environment at the very beginning; thanks to Kinga for her help on sample preparation; thanks to Geoff for his constant help and brilliant suggestions during my experiments; thanks to Jason for his outstanding brazing on my broken welding actuators. I also want to thank the group members from computation materials joining group, especially Tapasvi Lolla and Xinghua Yu for their help on microhardness test. vii I also thank my friends at our department. They encouraged completing my study overseas and gave me the chances to express the scientific ideals loudly and confidently in my second language. Especially, thanks to Professor Suliman Dregia, Professor James C. Williams, Dr. Ed Herderick, Clarrisa Yablinsky for help on many mock exams, and they taught me to gratefully cheer for myself rather than keeping happiness deep down inside. Thanks to Dr. Adam Pilchak for his great help on my EBSD sample preparation. Thanks to Dr. Alpesh Shukla, Dr. Libor Kovarik, Dr. Amit Samanta, Dr. Ning Zhou, Dr. Weiqi Luo, Li Sun, Dr. Liang Qi, and Dr. Dong Liang for their general discussions. Last but not least, I also deeply appreciate the love and support from my family. Thanks to my parents’ endless love. They walked me through the frustration and taught me the secret to realize my dreams: work hard with patience. Thanks to my elder sister who always stand with me shoulder by shoulder to face both the happy time and the hard time. Thank you, Mom, Dad, and Sis! Sincere thanks to my wonderful boyfriend, Kuiyu Li for his great understanding and accompany in these years, and I am looking forward to explore more adventure with you in the future. viii Vita Born November 6, 1981……………………...Yinchuan, Ningxia, China 2004…………………………………………..B.S. Materials Science and Engineering Zhejiang University, China 2005…………………………………………. M.S. Innovation of Manufacturing System and Technology, Singapore-MIT Alliance, Singapore 2007…………………………………………. M.S. Materials Science and Engineering The Ohio State University 2005-Present…………………………………Graduate Research Associate The Ohio State University 2007-Present………………………………… American Welding Society Graduate Student Fellowship Publications 1. Application of High Velocity Impact Welding at Varied Different Length Scales, Y. Zhang, S. S. Babu, C.
Load more

Recommended publications
  • View/Download PDF of This Issue, the File Size
    E.O. Paton Electric Welding Institute of the National Academy of Sciences of Ukraine International Scientific-Technical and Production Journal Issue 06 2019 Published Monthly Since 2000 English translation of the monthly «Avtomaticheskaya Svarka» (Automatic Welding) journal published in Russian since 1948 EDITORIAL BOARD CONTENTS Editor-in-Chief B.E. Paton Plenary Papers for International Conference Scientists of PWI, Kyiv S.I. Kuchuk-Yatsenko (vice-chief ed.), «Consumables for Welding, Surfacing V.N. Lipodaev (vice-chief ed.), and Coating Deposition and 3D Technologies», Yu.S. Borisov, G.M. Grigorenko, A.T. Zelnichenko, V.V. Knysh, Kyiv, PWI, 4–5 June 2019 I.V. Krivtsun, Yu.N. Lankin, L.M. Lobanov, V.D. Poznyakov, Bonnel J.-M., Maurer M. and Rosert R. Submerged arc surfacing of high-alloy I.A. Ryabtsev, K.A. Yushchenko steels by flux-cored wires .................................................................................. 3 Scientists of Ukrainian Universities Golovko V.V., Stepanyuk S.N. and Ermolenko D.Yu. Dispersion modification V.V. Dmitrik, NTU «KhPI», Kharkov V.V. Kvasnitsky, NTUU «KPl», Kyiv of dendrite structure of weld metal .................................................................... 13 E.P. Chvertko, NTUU «KPl», Kyiv Yushchenko K.A., Gakh I.S., Zadery B.A., Zvyagintseva A.V. and Foreign Scientists Karasevskaya O.P. Repair surfacing of gas turbine engine blades from N.P. Alyoshin high-temperature nickel alloys with surface defects and damage ..................... 19 N.E. Bauman MSTU, Moscow, Russia Guan Qiao Goncharov I.O., Sudavtsova V.S., Mishchenko D.D., Duchenko A.M. and Beijing Aeronautical Institute, China M. Zinigrad Sokolsky V.E. Influence of refractory dispersed phases on physical-chemical Ariel University, Israel properties of slag metls of MgO–Al2O3–SiO2–CaF2 system ..............................
    [Show full text]
  • Jet Composition in Magnetic Pulse Welding: Al-Al and Al-Mg Couples
    Stern Supplement Aug2014112_Layout 1 7/14/15 2:31 PM Page 257 WELDING RESEARCH Jet Composition in Magnetic Pulse Welding: Al-Al and Al-Mg Couples MPW jet phenomena were investigated and jet material composition for similar Al alloys and two samples of dissimilar Al-Mg alloy couples were observed BY A. STERN, O. BECHER, M. NAHMANY, D. ASHKENAZI, AND V. SHRIBMAN the maximum magnetic pressure. The ABSTRACT acceleration of the outer tube through the standoff gap is higher near the open Magnetic pulse welding (MPW) produces a mechanically induced essentially solid end of the tube due to higher magnetic state but partially fusion-type weld, with an extremely small fusion zone and pressure and decreases down to zero at extremely high cooling rates. Composition of material jet emission in MPW was inves- the weld end where there is no move- tigated for similar and dissimilar metal lap joints. The jet residues emitted from Al/Al ment of the outer tube (Refs. 6–8). As a and Al/Mg lap joints were collected and characterized, and their composition was mi- croanalyzed by scanning electron microscopy with energy-dispersive spectometry result, the collision is oblique and the (SEM-EDS). The composition of the jet remains was governed by the degree of rela- initial part of the joint collides at a high tive density difference between the two metal components. The metal jet emitted collision angle and at very high collision during Al/Mg welding was mainly composed of Mg, the metal component with lower velocity; frequently, no bond is formed density.
    [Show full text]
  • Solid State Welding
    EAA Aluminium Automotive Manual – Joining 7. Solid state welding Content: 7. Solid state welding 7.0 Introduction 7.1 Friction welding 7.1.1 Friction welding of components 7.1.1.1 Rotational friction welding 7.1.1.2 Linear friction welding 7.1.1.3 Orbital and multi-orbital friction welding 7.1.2 Linear friction stir welding 7.1.2.1 The linear friction stir welding process 7.1.2.2 Application of linear friction stir welding 7.1.2.3 Variants of the linear friction stir welding technique 7.1.3 Friction stir spot welding 7.1.3.1 The friction stir spot welding technique 7.1.3.2 Further developments of the friction stir spot welding technique 7.1.4 Friction stud welding 7.1.5 Friction element welding 7.2 Pressure welding processes 7.2.1 Contact and cold pressure welding 7.2.2 Diffusion and hot pressure welding 7.2.3 Explosion welding 7.2.4 Electromagnetic pulse welding 7.2.5 Roll bonding 7.2.6 Co-extrusion welding 7.3 Ultrasonic welding Version 2015 ©European Aluminium Association ([email protected]) 1 7.0 Introduction Solid-state welding describes a group of joining techniques which produces coalescence at temperatures below the melting point of the parent materials without the addition of third material. External pressure and relative movement may or may not be used to enhance the joining process. This group of joining techniques includes e.g. friction (stir) welding, cold pressure welding, diffusion welding, explosion welding, electromagnetic pulse welding, , and ultrasonic welding.
    [Show full text]
  • The Effects of Heat Treatment on the Microstructure and Microhardness of Explosive Welding
    Scientific Research and Essays Vol. 6(19), pp. 4141-4151, 8 September, 2011 Available online at http://www.academicjournals.org/SRE DOI: 10.5897/SRE11.1018 ISSN 1992-2248 ©2011 Academic Journals Full Length Research Paper The effects of heat treatment on the microstructure and microhardness of explosive welding 1,2 1 1 Fehim Findik *, Ramazan Yilmaz and Tolga somyurek 1Technical Education Faculty, Sakarya University, 54090 Esentepe Adapazari, Turkey. 2Faculty of Engineering and Natural Sciences, International University of Sarajevo, Hrasnicka Cesta 15, 71000 Sarajevo, Bosnia-Herzegovina. Accepted 28 July, 2011 An AISI 304 type of austenitic stainless steel and low carbon steel were cladded by explosive welding in this study. Four explosive loading rates were used with the range of 1 and 2.0. Stand-of distance (s=t) was also used as a welding parameter. Cladded materials have been subjected to heat treatment at 250°C for times of ranging from 1 to 4 h. Effect of heat treatment on the microstructure and mechanical properties has been evaluated using optical and scanning electron microscopy, EDS analysis technique and hardness tests, respectively. The results indicate that straight and wavy structures of bonding at the interface were obtained according to the loading of explosive rate. The grain size of the cladded materials near the interface were increased with the duration of heat treatment. Hardness values at the interface of the cladded materials were decreased with the increment of heat treatment period. Key word: Explosive welding, hardness, microstructure, stainless steel, low carbon steel. INTRODUCTION Explosion welding is one of the joining methods steel has low corrosion resistance therefore, it may be consisting of a solid state welding process in which cladded with the materials such as aluminium, titanium controlled explosive donation on the surface of a metal.
    [Show full text]
  • VOLUME 1 Welding Metallurgy Carbon and Alloy Steels
    VOLUME 1 Welding Metallurgy Carbon and Alloy Steels Volume I Fundamentals George E. Linnert GML Publications Hilton Head Island, South Carolina, USA Fourth Edition Published by the American Welding Society Miami, Florida, USA Contents Contents Chapter One: Background to Welding Metallurgy 1 MILESTONES IN WELDING HISTORY 1 THE FUTURE OF WELDING 4 WHAT IS WELDING METALLURGY? 6 PUTTING WELDING METALLURGY TO USE 12 WELDING TECHNOLOGY RESOURCES 12 SUGGESTED READING 15 Chapter Two: The Structure of Metals 18 ATOMS 18 Elementary Particles 20 Electrons 22 Positrons 26 Atomic Nuclei 26 Protons 27 Neutrons 28 Atom Construction 32 Isotopes of Elements 33 Isobars 34 Atomic Weight 34 Atomic Mass 34 Atom Valency 35 lonization 36 Radioactivity 37 Atom Size or Diameter 38 THE ELEMENTS 39 AGGREGATES OF ATOMS 41 The Solid State 45 The Crystalline Solids 45 Amorphous Solids 47 The Liquid State 48 The Gaseous State 49 FUNDAMENTALS OF CRYSTALS 50 Identification of Planes and Directions in Crystals 56 Basic Types of Crystals 56 vi Welding Metallurgy Inert Gas Crystals 58 Ionic Crystals 58 Covalent Crystals 59 Metallic Crystals 59 THE CRYSTALLINE STRUCTURE OF METALS 61 How Does a Crystal Grow from the Melt? 64 The Formation of Dendrites 66 The Formation of Grains 68 The Shape of Grains 71 The Size of Grains 72 Undercooling 72 THE IMPORTANCE OF A CRYSTALLINE STRUCTURE 74 Allotropic Transformation 75 Solubility in the Solid State 76 Plasticity in Metallic Crystals 77 Slip in Crystalline Structures 77 Slip and Lattice Orientation 78 Slip in Polycrystalline Metals
    [Show full text]
  • Beam Welding
    EAA Aluminium Automotive Manual – Joining 4. Beam welding Contents: 4. Beam welding 4.0 Introduction 4.1 Laser beam welding 4.1.1 Laser sources 4.1.1.1 CO2 lasers 4.1.1.2 Solid state lasers 4.1.2 Laser beam welding processes 4.1.2.1 Heat conduction welding 4.1.2.2 Deep penetration welding 4.1.2.3 Twin laser welding 4.1.2.4 Remote laser welding 4.1.2.5 Laser welding of tubes, profiles and tailored blanks 4.1.2.6 Laser deposit welding 4.1.3 Laser welding defects 4.1.4 Joint configurations 4.1.5 Addition of filler wire 4.1.6 Shielding gases for laser welding 4.1.7 Characteristics of laser welding of aluminium alloys 4.2 Electron beam welding 4.2.1 Vacuum electron beam welding 4.2.2 Non-vacuum electron beam welding 4.2.3 Electron beam welding of aluminium alloys Version 2015 ©European Aluminium Association ([email protected]) 1 4.0 Introduction This chapter provides a technical overview of the unique features of the beam welding processes: - Laser Beam Welding (LBW) and - Electron Beam Welding (EBW) including several examples of automotive aluminium applications. Apart from welding, both process techniques are also used for cutting and for surface treatment of aluminium products. Electron beam welding results in very deep, narrow penetration at high welding speeds. It is usually carried out in a vacuum chamber, but also non-vacuum welding machines are used. The low overall heat input of electron beam welding enables to achieve the highest as-welded strength levels in aluminium alloys.
    [Show full text]
  • Introduction to Non-Arc Welding Processes
    Introduction to Non-Arc Welding Processes Module 2B Module 2 – Welding and Cutting Processes Introduction to Non-Arc Welding Processes Non-Arc Welding processes refer to a wide range of processes which produce a weld without the use of an electrical arc z High Energy Density Welding processes Main advantage – low heat input Main disadvantage – expensive equipment z Solid-State Welding processes Main advantage – good for dissimilar metal joints Main disadvantage – usually not ideal for high production z Resistance Welding processes Main advantage – fast welding times Main disadvantage – difficult to inspect 2-2 Module 2 – Welding and Cutting Processes Non-Arc Welding Introduction Introduction to Non-Arc Welding Processes Brazing and Soldering z Main advantage – minimal degradation to base metal properties z Main disadvantage – requirement for significant joint preparation Thermite Welding z Main advantage – extremely portable z Main disadvantage – significant set-up time Oxyfuel Gas Welding z Main advantage - portable, versatile, low cost equipment z Main disadvantage - very slow In general, most non-arc welding processes are conducive to original fabrication only, and not ideal choices for repair welding (with one exception being Thermite Welding) 2-3 High Energy Density (HED) Welding Module 2B.1 Module 2 – Welding and Cutting Processes High Energy Density Welding Types of HED Welding Electron Beam Welding z Process details z Equipment z Safety Laser Welding z Process details z Different types of lasers and equipment z Comparison
    [Show full text]
  • Characterisation of Intermetallic Phases in Fusion Welded Commercially Pure Titanium and Stainless Steel 304
    metals Article Characterisation of Intermetallic Phases in Fusion Welded Commercially Pure Titanium and Stainless Steel 304 Timotius Pasang 1,*, Stevin Snellius Pramana 2 , Michael Kracum 3, Wojciech Zbigniew Misiolek 3 , Mona Aziziderouei 1, Masami Mizutani 4 and Osamu Kamiya 5 1 School of Engineering, Computer and Mathematical Sciences, Auckland University of Technology, Auckland 1020, New Zealand; [email protected] 2 School of Engineering, Newcastle University, Newcastle upon Tyne NE1 7RU, UK; [email protected] 3 Loewy Institute & Department of Materials Science and Engineering, Lehigh University, 5 East Packer Avenue, Bethlehem, PA 18015, USA; [email protected] (M.K.); [email protected] (W.Z.M.) 4 Joining and Welding Research Institute (JWRI), Osaka University, Osaka 567-0047, Japan; [email protected] 5 Faculty of Engineering Science, Department of System Design Engineering, Akita University, 1-1 Tegatagakuen-machi, Akita 010-8502, Japan; [email protected] * Correspondence: [email protected] Received: 3 October 2018; Accepted: 19 October 2018; Published: 24 October 2018 Abstract: A series of trials to fusion weld commercially pure titanium (CPTi) to stainless steel 304 (SS304) have been conducted using laser beam welding (LBW) and gas tungsten arc welding (GTAW). Neither technique produced adequate weld joints with LBW showing a more promising result, while GTAW yielded separation of the workpieces immediately after welding. Cracking and fracturing took place mainly on the SS304 side, which was explained by the differences in the materials’ thermal properties. Various intermetallic phases formed during welding that were identified using energy dispersive X-ray spectroscopy (EDS) and electron backscattered diffraction (EBSD) technique and were compared with an isothermal ternary phase diagram of Fe-Cr-Ti.
    [Show full text]
  • Magnetic Pulse Welding and Spot Welding with Improved Coil Efficiency—Application for Dissimilar Welding of Automotive Metal Alloys
    Journal of Manufacturing and Materials Processing Article Magnetic Pulse Welding and Spot Welding with Improved Coil Efficiency—Application for Dissimilar Welding of Automotive Metal Alloys Chady Khalil, Surendar Marya and Guillaume Racineux * Research Institute in Civil and Mechanical Engineering (GeM, UMR 6183 CNRS), Ecole Centrale de Nantes, 1 rue de la Noë, F-44321 Nantes, France; [email protected] (C.K.); [email protected] (S.M.) * Correspondence: [email protected] Received: 4 June 2020; Accepted: 6 July 2020; Published: 8 July 2020 Abstract: Lightweight structures in the automotive and transportation industry are increasingly researched. Multiple materials with tailored properties are integrated into structures via a large spectrum of joining techniques. Welding is a viable solution in mass scale production in an automotive sector still dominated by steels, although hybrid structures involving other materials like aluminum are becoming increasingly important. The welding of dissimilar metals is difficult if not impossible, due to their differential thermo mechanical properties along with the formation of intermetallic compounds, particularly when fusion welding is envisioned. Solid-state welding, as with magnetic pulse welding, is of particular interest due to its short processing cycles. However, electromagnetic pulse welding is constrained by the selection of processing parameters, particularly the coil design and its life cycle. This paper investigates two inductor designs, a linear (I) and O shape, for the joining of sheet metals involving aluminum and steels. The O shape inductor is found to be more efficient both with magnetic pulse (MPW) and magnetic pulse spot welding (MPSW) and offers a better life cycle.
    [Show full text]
  • Monthly Jurnal 2020 [January]
    IIM METAL NEWS Vol. 23 No. 1 January 2020 C O Obituary 3 N T G D Birla Gold Medal Lecture 2019 Joining of Advanced Materials for E 4 Defence Systems N - G Madhusudhan Reddy T S IIM Chapter Activities 26 Seminars & Conferences 30 Members’ News 30 The IIM Metal News and The Indian Institute of Metals do not accept any responsibility for the statements made and the opinion expressed by the author(s) in the technical articles. Printed and Published by Shri Kushal Saha, Secretary General, on behalf of “The Indian Institute of Metals”, and printed at Print Max, 44, Biplabi Pulindas Street, Kolkata-700009 • Email : [email protected] and published at ‘Metal House’, Plot 13/4, Block AQ, Sector V, Salt Lake, Kolkata-700091, West Bengal, India E-mail: [email protected], [email protected] Phone: 033-2367 9768 / 2367 5004 Website: www.iim-india.net Fax: (033) 2367 5335 Editor : Dr. Santanu Ray Vol.23 No.1 JANUARY 2020 1 IIM METAL NEWS THE INDIAN INSTITUTE OF METALS PATRONS Mr R M Dastur Mr Sajjan Jindal Dr Baba Kalyani Mr Satish Pai ADVISORY COMMITTEE OF FORMER PRESIDENTS Mr R N Parbat Dr Dipankar Banerjee Prof K Chattopadhyay Mr L Pugazhenthy Mr M Narayana Rao Dr R N Patra Dr Sanak Mishra Mr H M Nerurkar Mr S S Mohanty Dr U Kamachi Mudali, Convenor COUNCIL FOR THE YEAR 2019-20 PRESIDENT Dr U Kamachi Mudali VICE PRESIDENT & CHAIRMAN VICE PRESIDENT & CHAIRMAN VICE PRESIDENT & CHAIRMAN Non-Ferrous Division Ferrous Division Metal Science Division Prof Amol A Gokhale Mr T V Narendran Dr Samir V Kamat IMMEDIATE FORMER PRESIDENT Mr Anand Sen SECRETARY GENERAL Mr Kushal Saha HON TREASURER CONTROLLER OF EXAMINATION CHIEF EDITOR, TRANSACTIONS MANAGING EDITOR, IIM METAL NEWS Mr Somnath Guha Prof P K Mitra Prof B S Murty Dr Santanu Ray Jt.
    [Show full text]
  • VOCABULARI DE SOLDADURA Institut Tècnic Català De La Soldadura
    VVOOCCAABBUULLAARRII DDEE SSOOLLDDAADDUURRAA VVOOCCAABBUULLAARRIIOO DDEE SSOOLLDDEEOO WWEELLDDIINNGG VVOOCCAABBUULLAARRYY CCCaaatttaaalllààà CCCaaasssttteeellllllààà AAAnnnggglllèèèsss CCCaaatttaaalllááánnn CCCaaasssttteeellllllaaannnooo IIInnnggglllééésss CCCaaatttaaalllaaannn SSSpppaaannniiissshhh EEEnnngggllliiissshhh 2a Edició VOCABULARI DE SOLDADURA institut tècnic català de la soldadura Rubí, Desembre de 2010 2a Edició www.itcsoldadura.org PRESENTACIÓ L’ITCS, mitjançant aquest recull de més de 3.000 paraules i termes en llengua catalana, castellana* i anglesa* relacionades principalment amb la soldadura i les tecnologies connexes, pretén la difusió del català en el sector del metall i, especialment, entre els professionals de la indústria catalana propers als processos de soldadura. * Els termes recollits tant en llengua castellana com en llengua anglesa responen, majoritàriament, a les equivalències que s’empren a Europa, és a dir, el significat d’aquests termes castellans i anglesos pot ser diferent a Amèrica. 1a Edició: Recull de 2.200 paraules i termes 2a Edició: Recull de 3.500 paraules i termes PRESENTACIÓN El ITCS, a través de esta recopilación de más de 3.000 palabras y términos en lengua catalana, castellana* e inglesa* relacionadas principalmente con la soldadura y las tecnologías conexas, pretende la difusión del catalán en el sector del metal y, especialmente, entre los profesionales de la industria catalana próximos a los procesos de soldadura. * Los términos recogidos tanto en lengua castellana como en lengua inglesa
    [Show full text]
  • Probing Magnetic Pulse Welding of Thin-Walled Tubes
    Journal of Manufacturing and Materials Processing Article Probing Magnetic Pulse Welding of Thin-Walled Tubes Koen Faes 1,* , Rishabh Shotri 2 and Amitava De 2 1 Belgian Welding Institute, Technologiepark Zwijnaarde 935, B-9052 Ghent, Belgium 2 Indian Institute of Technology, Bombay, Mumbai 400076, India; [email protected] (R.S.); [email protected] (A.D.) * Correspondence: [email protected] Received: 29 October 2020; Accepted: 9 December 2020; Published: 11 December 2020 Abstract: Magnetic pulse welding is a solid-state joining technology, based on the use of electromagnetic forces to deform and to weld workpieces. Since no external heat sources are used during the magnetic pulse welding process, it offers important advantages for the joining of dissimilar material combinations. Although magnetic pulse welding has emerged as a novel technique to join metallic tubes, the dimensional consistency of the joint assembly due to the strong impact of the flyer tube onto the target tube and the resulting plastic deformation is a major concern. Often, an internal support inside the target tube is considered as a solution to improve the stiffness of the joint assembly. A detailed investigation of magnetic pulse welding of Cu-DHP flyer tubes and 11SMnPb30 steel target tubes is performed, with and without an internal support inside the target tubes, and using a range of experimental conditions. The influence of the key process conditions on the evolution of the joint between the tubes with progress in time has been determined using experimental investigations and numerical modelling. As the process is extremely fast, real-time monitoring of the process conditions and evolution of important responses such as impact velocity and angle, and collision velocity, which determine the formation of a metallic bond, is impossible.
    [Show full text]