The effects of postrolling heat treatment on the mechanical property and microstructure of 1050 aluminum alloy and 304 stainless steel (SS) clad metals were investigated. Clad metals were made by cold rolling after surface treatments of both sheets followed by heat treatment at 500 °C for various annealing times. The effects of transformation of microstructure at the interface on bonding strength are discussed. The initial clad roll bonding of Al/stainless steel clad metal was bonded by mechanical locking at the interface. The protruding stainless steel in the interface is the diffusion route and forms the better joint with aluminum in the annealing process, which results in the enhancement of the bonding strength. Intermediate layers were formed for over 2 h. It resulted in the weakening of the bonding strength and the fracture surface transforms into a brittle structure. As Al/stainless steel clad metals were under 13% reduction ratio, it had the optimum bond strength with a heat treatment for 1 h at 500 °C.
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e-mail: wshwang@mail.ncku.edu.tw
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January 2012
Technical Briefs
Effects of Heat Treatment on Mechanical Property and Microstructure of Aluminum/Stainless Steel Bimetal Plate
Weng-Sing Hwang,
Weng-Sing Hwang
Department of Materials Science and Engineering,
e-mail: wshwang@mail.ncku.edu.tw
National Cheng Kung University
, Tainan 70101, Taiwan
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Tian-I Wu,
Tian-I Wu
Department of Materials Science and Engineering,
National Cheng Kung University
, Tainan 70101, Taiwan
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Wen-Chung Sung
Wen-Chung Sung
Department of Materials Science and Engineering,
National Cheng Kung University
, Tainan 70101, Taiwan
Search for other works by this author on:
Weng-Sing Hwang
Department of Materials Science and Engineering,
National Cheng Kung University
, Tainan 70101, Taiwan
e-mail: wshwang@mail.ncku.edu.tw
Tian-I Wu
Department of Materials Science and Engineering,
National Cheng Kung University
, Tainan 70101, Taiwan
Wen-Chung Sung
Department of Materials Science and Engineering,
National Cheng Kung University
, Tainan 70101, Taiwan
J. Eng. Mater. Technol. Jan 2012, 134(1): 014501 (7 pages)
Published Online: December 8, 2011
Article history
Received:
January 20, 2010
Revised:
September 27, 2010
Online:
December 8, 2011
Published:
December 8, 2011
Citation
Hwang, W., Wu, T., and Sung, W. (December 8, 2011). "Effects of Heat Treatment on Mechanical Property and Microstructure of Aluminum/Stainless Steel Bimetal Plate." ASME. J. Eng. Mater. Technol. January 2012; 134(1): 014501. https://doi.org/10.1115/1.4003107
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