铸轧铜铝复合板界面演变规律研究

doi:10.11896/cldb.17090123

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Abstract The microstructure and phase compositions of the interface layer of Cu/Al composite plate prepared by cast-rolling were investigated by means of OM, SEM and XRD. The interfacial evolution law during the rolling and annealing processes were analyzed. The results showed that the process of interface evolution during heat treatment mainly consisted of four stages: the formation of supersaturated solid solution, the nucleation of intermetallic compounds, the intermetallic compounds were laterally joined along the interface and the thickening of interface layer. The interface cracks propagated along the CuAl₂ layer in the process of peeling, with the extension of annealing time, the morphology of peeled surface changed from tearing edge and groove to tearing platform and crack. During the rolling process, the interface layer was broken, pure copper and pure aluminum were squeezed into the cracks and forming a direct contact area. With the increase of rolling screwdown ratio, the proportion of direct contact zone accounted for the total length of the interface gradually increased. The broken interfacial intermetallics were embedded between pure copper and pure aluminum and the fragments were in a certain angle with the interface.

Key words： Cu/Al composite plate interface structure interface phase interface evolvement law

Published: 16 May 2019

CLC number:

TB331

Fund:This work was financially supported by the Joint Project from the Henan-Provincial and the China-National Natural Science Foundations (U1604251).

About author:: Jingpei Xie, born in June 1957, professor, doctoral, doctoral tutor, former vice president of Henan University of Science and Technology; academic leader of material processing engineering, returned from Germany in 1990, government special allowance recipient, Henan Province Excellent experts, outstanding educators in Henan Province, winners of the Outstanding Talent Innovation Fund of Henan Province, leader of “Innovative Technology Team” in Henan Province, and the first outstanding professional and technical talents in Henan Province. He is a member of the China Foundry Society, a member of the Academic Committee of the China Foundry Society, a member of the editorial board of Special Cas-ting and Non-Ferrous Alloys, Foundry and China Foundry; a member of the China Foundry Society's Cast Steel and Smelting Technical Committee, and the China Rare Earth Society. Deputy Chairman of the Alloy Committee, director of the Collaborative Innovation Center of Non-ferrous Metals Common Technology in Henan Province.

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	XIE Jingpei
	LIU Zhe
	WANG Aiqin
	LYU Shijing
	MAO Zhiping
	LIU Shuaiyang
	TIAN Hanwei

Cite this article:

XIE Jingpei,LIU Zhe,WANG Aiqin, et al. Investigation on Interface Evolvement Law of Cast-Rolling Cu/Al Composite Plate[J]. Materials Reports, 2019, 33(10): 1702-1705.

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http://www.mater-rep.com/EN/10.11896/cldb.17090123 OR http://www.mater-rep.com/EN/Y2019/V33/I10/1702

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