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The Relationship Between Microstructure and Magnetic Properties of Alnico Alloys
The relationship between microstructure and magnetic properties of alnico alloys Citation for published version (APA): Vos, de, K. J. (1966). The relationship between microstructure and magnetic properties of alnico alloys. Technische Hogeschool Eindhoven. https://doi.org/10.6100/IR287613 DOI: 10.6100/IR287613 Document status and date: Published: 01/01/1966 Document Version: Publisher’s PDF, also known as Version of Record (includes final page, issue and volume numbers) Please check the document version of this publication: • A submitted manuscript is the version of the article upon submission and before peer-review. There can be important differences between the submitted version and the official published version of record. People interested in the research are advised to contact the author for the final version of the publication, or visit the DOI to the publisher's website. • The final author version and the galley proof are versions of the publication after peer review. • The final published version features the final layout of the paper including the volume, issue and page numbers. Link to publication General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights. • Users may download and print one copy of any publication from the public portal for the purpose of private study or research. • You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal. -
Optimization of Mechanical Crimping to Assemble Tubular Components
Journal of Materials Processing Technology 146 (2004) 35–43 Optimization of mechanical crimping to assemble tubular components Manas Shirgaokar a, Hyunjoong Cho a, Gracious Ngaile a, Taylan Altan a,∗, Jang-Horng Yu b, John Balconi b, Richard Rentfrow b, W.J. Worrell b a ERC for Net Shape Manufacturing, The Ohio State University, 339 Baker Systems, 1971 Neil Avenue, Columbus, OH 43210, USA b Science and Technology Group, Alliant Ammunition and Powder Company, Radford Army Ammunition Plant, Route 114, P.O. Box 1, Radford, VA 24141-0096, USA Abstract The crimping process is used often in the assembly of tubular components. In this study, with the aid of the finite-element method (FEM), the mechanical crimping operation was evaluated and optimized for a specific application. The effect of various process variables, such as the geometry, alignment and stroke of the crimper and the friction at the crimper–tube interface were investigated. Thus, it was possible to optimize the process so that the effect of springback could be reduced and the assembly quality, as indicated by the pullout force, could be improved. The crimping process of a single-grooved rod with a tube was evaluated as a case study. Based on the FE simulations, it was possible to determine the optimum alignment and the optimum design for two types of crimper geometries. © 2003 Elsevier B.V. All rights reserved. Keywords: Assembly; Crimping; Pullout test; FEM 1. Introduction the crimping process used in manufacturing bullets is pre- sented. Traditional joining methods use resistance spot-welding In the present study, the bullet is considered as a cylindri- or fastening elements such as screws, pegs, rivets, bolts and cal solid rod that must be assembled to the casing, which is nuts. -
American Galvanised Iron Roofing and Cladding from the 1870'S to 1920'S
University of Pennsylvania ScholarlyCommons Theses (Historic Preservation) Graduate Program in Historic Preservation 1988 American Galvanised Iron Roofing and Cladding from the 1870's to 1920's Andrew Benjamin Hall University of Pennsylvania Follow this and additional works at: https://repository.upenn.edu/hp_theses Part of the Historic Preservation and Conservation Commons Hall, Andrew Benjamin, "American Galvanised Iron Roofing and Cladding from the 1870's to 1920's" (1988). Theses (Historic Preservation). 301. https://repository.upenn.edu/hp_theses/301 Copyright note: Penn School of Design permits distribution and display of this student work by University of Pennsylvania Libraries. Suggested Citation: Hall, Andrew Benjamin (1988). American Galvanised Iron Roofing and Cladding from the 1870's to 1920's. (Masters Thesis). University of Pennsylvania, Philadelphia, PA. This paper is posted at ScholarlyCommons. https://repository.upenn.edu/hp_theses/301 For more information, please contact [email protected]. American Galvanised Iron Roofing and Cladding from the 1870's to 1920's Disciplines Historic Preservation and Conservation Comments Copyright note: Penn School of Design permits distribution and display of this student work by University of Pennsylvania Libraries. Suggested Citation: Hall, Andrew Benjamin (1988). American Galvanised Iron Roofing and Cladding from the 1870's to 1920's. (Masters Thesis). University of Pennsylvania, Philadelphia, PA. This thesis or dissertation is available at ScholarlyCommons: https://repository.upenn.edu/hp_theses/301 UNIVEKSlTYy* PENNSYLVANIA. UBKARIES s AMERICAN GALVANISED IRON ROOFING AND CLADDING FROM THE 1870 's TO 1920' Andrew Benjamin Hall A THESIS The Graduate Program in Historic Preservation Presented to the Faculties of the University of Pennsylvania in Partial Fulfillment of the Requirements for the Degree of MASTER OF SCIENCE 1988 Robert Schuyler, Associate Professor, American Civilization, Advisor Henry Glassie, Professor, Folklore and Folklife, Reader Da\ri#-G. -
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Proceedings of The Intl. Conf. on Information, Engineering, Management and Security 2014 [ICIEMS 2014] 144 Effects of Combined Addition of Aluminum Oxide, Fly Ash, Carbon and Yttrium on Density and Hardness of ZA27 Zinc Alloy A. K. Birru a* , R. Manohar Reddy a, B. Srinivas a, K. Balachandan Reddy a and K. Nithin a aDepartment of Mechanical Engineering, Christu Jyothi Institute Of Technology & Science, Jangaon, Warangal, India Abstract: ZA-27 alloy plays a vital role in ZA family of alloys with a high strength and pinnacle applications in manufacturing. The research papers emphasized to enhance hardness and minimize the density of the aforesaid alloy with combined addition of Al 203, fly ash, carbon and yttrium as reinforcements. Hence we observed that with density was gradually decreased at 7% with 5% Al 2O3, 0.15% carbon and 0.01% Yttrium addition. Similarly, further decreased density at 10% with 7.5% Al 2O3, 0.25% carbon and 0.05% Yttrium. However, hardness was initial increased more than 11% with 5% Al 2O3, 0.15% carbon and 0.01% Yttrium. Conversely, hardness was slightly decreased at 5% with 7.5% Al 2O3, 0.25% carbon and 0.05% Yttrium. Keywords: Aluminum oxide; Flyash; Carbon; Yttrium; Density; Hardness. 1. Introduction Zinc alloys with higher aluminium content (25-27 wt. %) obtained by conventional processes of melting and casting, are applied in various fields, particularly in automobile industry, because of their good mechanical, technological and economical properties. Lim Ying Pio et al. [1] conducted the experimentation of LM6 Al- Si alloy on a sand casting of different modulus, the addition level of Al5Ti1B into the melt ranges from 0 wt. -
Characteristics of Al-Si Alloys with High Melting Point Elements for High Pressure Die Casting
materials Article Characteristics of Al-Si Alloys with High Melting Point Elements for High Pressure Die Casting Tomasz Szymczak 1,* , Grzegorz Gumienny 1,* , Leszek Klimek 2 , Marcin Goły 3 , Jan Szymszal 4 and Tadeusz Pacyniak 1 1 Department of Materials Engineering and Production Systems, Lodz University of Technology, 90-924 Lodz, Poland; [email protected] 2 Institute of Materials Science and Engineering, Lodz University of Technology, 90-924 Lodz, Poland; [email protected] 3 Department of Physical & Powder Metallurgy, AGH University of Science and Technology, 30-059 Krakow, Poland; [email protected] 4 Department of Technical Sciences and Management, University of Occupational Safety Management in Katowice, 40-007 Katowice, Poland; [email protected] * Correspondence: [email protected] (T.S.); [email protected] (G.G.); Tel.: +48-426312276 (T.S.); +48-426312264 (G.G.) Received: 9 October 2020; Accepted: 29 October 2020; Published: 29 October 2020 Abstract: This paper is devoted to the possibility of increasing the mechanical properties (tensile strength, yield strength, elongation and hardness) of high pressure die casting (HPDC) hypoeutectic Al-Si alloys by high melting point elements: chromium, molybdenum, vanadium and tungsten. EN AC-46000 alloy was used as a base alloy. The paper presents the effect of Cr, Mo, V and W on the crystallization process and the microstructure of HPDC aluminum alloy as well as an alloy from the shell mold. Thermal and derivative analysis was used to study the crystallization process. The possibility of increasing the mechanical properties of HPDC hypoeutectic alloy by addition of high-melting point elements has been demonstrated. -
Aluminum Sheet / Plate
Advanced Metal Technology Co.,Limited ALUMINUM PRODUCTS SERIES Advanced Metal Technology Co.,Limited 1 Hongnan Mansion, No.939 Jinqiao Road, Shanghai, China Post Code:200136 Tel: 0086-21-61623132 Fax: 0086-21-61622559 Henghua Technology Park,NAO.58dXiuvxi Raoand, WcuXei,Chdina Metal Technology Co.,Limited Post Code:214000 Tel: 0086-510-85192612 Fax: 0086-510-85192613 Flat/RM 1205, Tai Sang Bank Building, 130-132 Des Voeux Road Central, HK, China Advanced Metal Technology Co.,Limited CONTENT INTRODUCTION...............................................................................................................................3 ALUMINUM SHEET / PLATE..........................................................................................................3 1000 Series 1050 1060 1070 1100..............................................................................................6 5000 Series 5050 5054 5083 5454..............................................................................................7 6000 Series 6010 6011 6061 6062 6063.....................................................................................8 7000 Series 7005 7A04 7A09 7050 7075...................................................................................9 Aluminum Composite Sheet..................................................................................................... 10 Roof Ceiling.............................................................................................................................. 12 Air Plane Plate...........................................................................................................................14 -
Review on Multi-Pass Friction Stir Processing of Aluminium Alloys
Preprints (www.preprints.org) | NOT PEER-REVIEWED | Posted: 22 July 2020 doi:10.20944/preprints202007.0514.v1 Review Review on Multi-Pass Friction Stir Processing of Aluminium Alloys Oritonda Muribwathoho1, Sipokazi Mabuwa1* and Velaphi Msomi1 1 Cape Peninsula University of Technology, Mechanical Engineering Department, Bellville, 7535, South Africa; [email protected]; [email protected] * Correspondence: [email protected]; Tel.: 27 21 953 8778 Abstract: Aluminium alloys have evolved as suitable materials for automotive and aircraft industries due to their reduced weight, excellent fatigue properties, high-strength to weight ratio, high workability/formability, and corrosion resistance. Recently, the joining of similar and dissimilar metals have achieved huge success in various sectors. The processing of soft metals like aluminium, copper, iron and nickel have been fabricated using friction stir processing. Friction stir processing (FSP) is a microstructural modifying technique that uses the same principles as the friction stir welding technique. In the majority of studies on FSP, the effect of process parameters on the microstructure was characterized after a single pass. However, multiple passes of FSP is another method to further modify the microstructure in aluminium castings. This study is aimed at reviewing the impact of multi-pass friction stir processed joints of aluminium alloys and to identify a knowledge gap. From the literature that is available on multi-pass FSP, it has been observed that the majority of the literature focused on the processing of plates than the joints. There is limited literature reporting on multi-pass friction stir processed joints. This then creates a need to study further on multi-pass friction stir processing on dissimilar aluminium alloys. -
Statistical Analysis of the Optical Interferometry of Pitting Process in Aluminum 3003 Sheets Exposed to Saline Environment
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Elsevier - Publisher Connector Available online at www.sciencedirect.com ScienceDirect Procedia Materials Science 8 ( 2015 ) 82 – 90 International Congress of Science and Technology of Metallurgy and Materials, SAM - CONAMET 2013 Statistical Analysis of the Optical Interferometry of Pitting Process in Aluminum 3003 Sheets Exposed to Saline Environment Solange Y. Paredes-Dugarte, Benjamín Hidalgo-Prada Material Science Department, Materials Characterization Laboratory. Research Institute of Biomedicine and Applied Sciences “Dra. Susan Tai”, University Ave., Cumaná, Sucre 6101, Venezuela. Abstract In this study, a statistical evaluation was made of the susceptibility to pitting corrosion, using the pitting factor criteria. Specimens were cut in size of 15 cm x10 cm of AA3003 aluminium sheet of temper H14, H16 and H18 of national production. Afterwards, they were exposed to a salt spray during 72, 144, 216, 288 and 360 hours continually, according to ASTM B117 standard. After salt spray test was observed pitting attack in all specimens regardless of the exposure time and the degree of deformation (temper) of material. The surfaces of the corroded specimens were analyzed by optical interferometry. The parameters evaluated in each field were: roughness (Rms), peak-valley distance (PV) and the lowest point of all peaks (V). A pitting factor of the order of 4 was calculated, indicating a highly localized corrosion process for this commercial aluminium alloy 3003 in saline environment. © 20152014 TheThe Authors. Authors. Published Published by Elsevierby Elsevier Ltd. LtdThis. is an open access article under the CC BY-NC-ND license Selection(http://creativecommons.org/licenses/by-nc-nd/4.0/ and peer-review under responsibility). -
Metallurgical Abstracts (General and Non-Ferrous)
METALLURGICAL ABSTRACTS (GENERAL AND NON-FERROUS) Volume 2 1935 Part 13 I —PROPERTIES OF METALS (Continued from pp. 553-568.) Refined Aluminium. Robert GaDeau (Metallurgist (Suppt. to Engineer), 1936, 11, 94-96).—Summary of a paper presenteD to the Congrès Inter nationale Des Mines, De la Métallurgie, et De la Géologie Appliquée, Paris. See Met. Abs., this vol., pp. 365 anD 497.—R. G. _ On the Softening and Recrystallization of Pure Aluminium. ------ (A lu minium, 1935, 17, 575-576).—A review of recent work of Calvet anD his collaborators ; see Met. Abs., this vol., pp. 453, 454. A. R. P. *Some Optical Observations on the Protective Films on Aluminium in Nitric, Chromic, and Sulphuric Acids. L. TronstaD anD T. HbverstaD (Trans. Faraday Soc., 1934, 30, 362-366).—The optical properties of natural films on aluminium were measureD in various solutions anD their change with time of immersion observeD. Little change occurs in such films in chromic aciD solutions with or without chloriDe ; the films are not protective in concentrateD sulphuric aciD, anD in concentrateD nitric aciD the protective films are alternately DissolveD anD re-formeD. The mean thickness of natural films on aluminium is 100 p. or more than 10 times as thick as those on iron.—A. R. P. *Light from [Burning] Aluminium and Aluminium-Magnésium [Alloy], J. A. M. van Liempt anD J. A. De VrienD (Bee. trav. chim., 1935, 54, 239-244). „ . —S. G. ’"Investigations Relating to Electrophotophoresis Exhibited by Antimony Gisela Isser anD AlfreD Lustig (Z . Physik, 1935, 94, 760-769).—UnchargeD submicroscopic particles subjecteD to an electric fielD in an intense beam of light are founD to move either in the Direction of, or against, the fielD. -
Lead Action News Lanv15n2 Combating the Silent Epidemic
LEAD Action News vol. 15 no. 2, February 2015 ISSN 1324-6012 The newsletter of The LEAD (Lead Education and Abatement Design) Group Inc. PO Box 161 Summer Hill NSW 2130 Australia Ph: (02) 9716 0014, Email www.lead.org.au/cu.html Web:www.lead.org.au/ www.leadsafeworld.com Editor-in-Chief: Elizabeth O’Brien, Editorial Team: Rocky Huang, Mish Calvert Combating the Silent Epidemic This issue is about providing you with information to combat lead poisoning. From nutritional information to finding out how to stay lead safe by paying attention to the different sources of lead contamination and ways that lead can enter the body of you and your family and taking the appropriate action to combat these threats. It is up to us, every single one of us, to combat lead in our local environment and together we can work towards a lead-safe future. To do this, The LEAD Group aims to arm you with information as well as provide you with the tools to detect and take further action about the lead in your surroundings. If you haven't already, please visit our shop (http://www.leadsafeworld.com/shop/) and become a member / partner and join our cause for a lead-safe future. Additionally, we highly recommend that you check out our newest project 'The Blood Lead Challenge (http://www.leadsafeworld.com/wp-content/uploads/2014/10/Blood-Lead- Challenge.pdf)! You can find more information about the articles in this issue of LEAD Action News in the Editorial. VAP Entry: Our children heading for a lead-safe world. -
Table of Contents
Table of Contents Committees Preface Symposium A: Invited Lectures New Perspectives for Wrought Magnesium Alloys J. Bohlen, D. Letzig and K.U. Kainer 1 Automotive Mg Research and Development in North America J.A. Carpenter, J. Jackman, N.Y. Li, R.J. Osborne, B.R. Powell and P.S. Sklad 11 State of the Art in the Refining and Recycling of Magnesium L.F. Zhang and T. Dupont 25 Research and Development of Processing Technologies for Wrought Magnesium Alloys F.S. Pan, M.B. Yang, Y.L. Ma and G.S. Cole 37 Overview of CAST and Australian Magnesium Research D.H. StJohn 49 Development of Magnesium Alloys with High Performance S. Kamado and Y. Kojima 55 Symposium B: Cast Magnesium Alloys and Foundry Technologies Effects of Microstructure and Partial Melting on Tensile Properties of AZ91 Magnesium Cast Alloy T.P. Zhu, Z.W. Chen and W. Gao 65 Effect of Heat Treatment on the Microstructure and Creep Behavior of Mg-Sn-Ca Alloys T.A. Leil, Y.D. Huang, H. Dieringa, N. Hort, K.U. Kainer, J. Buršík, Y. Jirásková and K.P. Rao 69 Creep Behaviour and Microstructure of Magnesium Die Cast Alloys AZ91 and AE42 K. Wei, L.Y. Wei and R. Warren 73 Growth Rate of Small Fatigue Cracks of Cast Magnesium Alloy at Different Conditions X.S. Wang and J.H. Fan 77 A Cyclic Stress-Strain Constitutive Model for Polycrystalline Magnesium Alloy and its Application X.G. Zeng, Q.Y. Wang, J.H. Fan, Z.H. Gao and X.H. Peng 81 Dynamic Stress-Strain Behavior of AZ91 Alloy at High-Strain Rate G.Y. -
Aluminium Alloys Chemical Composition Pdf
Aluminium alloys chemical composition pdf Continue Alloy in which aluminum is the predominant lye frame of aluminum welded aluminium alloy, manufactured in 1990. Aluminum alloys (or aluminium alloys; see spelling differences) are alloys in which aluminium (Al) is the predominant metal. Typical alloy elements are copper, magnesium, manganese, silicon, tin and zinc. There are two main classifications, namely casting alloys and forged alloys, both further subdivided into heat-treatable and heat-free categories. Approximately 85% of aluminium is used for forged products, e.g. laminated plates, foils and extrusions. Aluminum cast alloys produce cost-effective products due to their low melting point, although they generally have lower tensile strength than forged alloys. The most important cast aluminium alloy system is Al–Si, where high silicon levels (4.0–13%) contributes to giving good casting features. Aluminum alloys are widely used in engineering structures and components where a low weight or corrosion resistance is required. [1] Alloys composed mostly of aluminium have been very important in aerospace production since the introduction of metal leather aircraft. Aluminum-magnesium alloys are both lighter than other aluminium alloys and much less flammable than other alloys containing a very high percentage of magnesium. [2] Aluminum alloy surfaces will develop a white layer, protective of aluminum oxide, if not protected by proper anodization and/or dyeing procedures. In a wet environment, galvanic corrosion can occur when an aluminum alloy is placed in electrical contact with other metals with a more positive corrosion potential than aluminum, and an electrolyte is present that allows the exchange of ions.