Acta Metallurgica Sinica (English Letters) ›› 2021, Vol. 34 ›› Issue (7): 925-931.DOI: 10.1007/s40195-020-01179-w

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Microstructural Evolution and Mechanical Properties of Laminated CuAl Composites Processed by Accumulative Roll-Bonding and Annealing

H.R. Lin1,2, Y. Z. Tian3,4(), S.J. Sun1,2, Z.F. Zhang1,2()   

  1. 1Shi-changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
    2School of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
    3Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China
    4Research Center for Metallic Wires, Northeastern University, Shenyang 110819, China;

Abstract:

Nanostructured Cu-/Al-laminated composites were processed by accumulative roll-bonding (ARB) technique for four cycles. Microstructural evolutions inside the Cu and Al layers and the interfacial reactions were revealed after annealing at different temperatures. Recovery and recrystallization occurred in the Cu and Al layers at low annealing temperatures, and three kinds of intermetallic compounds formed near the interfaces. The mechanical properties of these composites after annealing were investigated by tensile tests, and the variation of strength-ductility synergy was comprehensively discussed by considering the roles of constituent and the intermetallic compounds.

Key words: CuAl composites, Accumulative roll-bonding (ARB), Annealing, Intermetallic compounds, Ductility