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Title: Experimental and numerical investigation on the friction welding process
Researcher: Khan, Ishtiaq Ahmed
Guide(s): Reddy, P Ravinder
Kumar, A C S
Keywords: Friction welding process
Friction welding
Upload Date: 19-Apr-2012
University: Jawaharlal Nehru Technological University
Completed Date: August, 2011
Abstract: The friction welding of dissimilar material combinations such as Al 6061 - SS 304, Al 5052 SS 304, Pure Al SS 304, Al 6061 copper, pure Al copper are very important. As some of these weld combinations are used in very critical applications such as aerospace, nuclear power plants, cryogenics, rocket fuel systems, electrical and automotive applications. Therefore the weld strength and its interface properties are extremely important. The failure of these parts can lead to huge losses. The friction welding of these dissimilar materials is more complicated compared to similar materials due to differences in physical, mechanical, chemical and thermal properties. The problems associated with friction welding of aluminum and its alloys to SS 304 and copper are lower weld strength in the inner region, susceptibility to formation of intermetallic compounds, formation of unbond zone at the inner region (central portion), presence of oxides layers at the weld interfaces, non uniform heat generation across the weld interface, unsymmetrical deformation with respect to the plane of the joint interface and large amount of material consumption during welding process. In friction welding with regular joint geometry (flat face to flat face), the heat generated in inner region is lower than outer region. This is because of lower rotation speed of inner region (central portion) when compared to outer region. The heat generation decreases radially as distance from centre to outer periphery of the work piece decreases. Therefore welding starts from the outer periphery and it progresses to inner region, which increases the severity of previously mentioned problems.
Pagination: xxviii, 227p.
Appears in Departments:Faculty of Mechanical Engineering

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01_title.pdfAttached File202.5 kBAdobe PDFView/Open
02_declaration.pdf180.01 kBAdobe PDFView/Open
03_certificate.pdf145.15 kBAdobe PDFView/Open
04_acknowledgements.pdf145.9 kBAdobe PDFView/Open
05_abstract.pdf195.76 kBAdobe PDFView/Open
06_contents.pdf506.42 kBAdobe PDFView/Open
07_list of figures tables & photographs.pdf525.17 kBAdobe PDFView/Open
08_notations.pdf181 kBAdobe PDFView/Open
09_chapter 1.pdf221.38 kBAdobe PDFView/Open
10_chapter 2.pdf724.26 kBAdobe PDFView/Open
11_chapter 3.pdf455.67 kBAdobe PDFView/Open
12_chapter 4.pdf812.01 kBAdobe PDFView/Open
13_chapter 5.pdf1.13 MBAdobe PDFView/Open
14_chapter 6.pdf1.18 MBAdobe PDFView/Open
15_chapter 7.pdf461.78 kBAdobe PDFView/Open
16_chapter 8.pdf794.65 kBAdobe PDFView/Open
17_chapter 9.pdf519.79 kBAdobe PDFView/Open
18_chapter 10.pdf163.68 kBAdobe PDFView/Open
19_references.pdf216.31 kBAdobe PDFView/Open
20_list of publications.pdf147.62 kBAdobe PDFView/Open

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