Research on Cold-Rolled Bimetal of High-Tin Aluminum Alloy and Steel

Guo Ming Cui; Xing Xia Li; Jian Min Zeng

doi:10.4028/www.scientific.net/AMM.217-219.395

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 217-219Research on Cold-Rolled Bimetal of High-Tin...

Research on Cold-Rolled Bimetal of High-Tin Aluminum Alloy and Steel

Abstract:

Bimetal of high-tin aluminum alloy and steel was fabricated by cold-rolling process; microstructure, bonding strength and bonding mechanism for bonding interface of the bimetal were investigated under cold-rolling and recrystallization annealing state, respectively. Experimental results indicate that tin phase of bimetal in cold-rolling state shows a belt type distribution, however, it, in recrystallization annealing state, is uniformly distributed just like some “isolated islands”. A well bonding interface, between layers of high–tin aluminum alloy and pure aluminum, can be obtained, and it is difficult to distinguish one layer from the other; but the interface, between layers of low-carbon steel back and pure aluminum, is clear and uneven. And meanwhile, bonding mechanism of bimetal interface, in cold-rolling state, is cold pressure welding and mechanical occluding, But it, in recrystallization annealing state, is cold pressure welding, mechanical occluding, and metallurgic bonding. After recrystallization annealing, at 350°C for 2h,the bonding strength of bimetal approaches to 92.4MPa, which is about 26% higher than that of cold-rolling state.

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Periodical:

Applied Mechanics and Materials (Volumes 217-219)

Pages:

395-399

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.217-219.395

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Online since:

November 2012

Authors:

Guo Ming Cui, Xing Xia Li, Jian Min Zeng

Keywords:

Bearing, Bi-Metal, Cold-Rolling, High-Tin Aluminum Alloy

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DOI: 10.1016/0038-1098(87)91131-8

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