Grain refinement and enhanced precipitation of Cu–Cr–Zr induced by hot rolling with intermediate annealing treatment | Zendy

Depeng Shen | Zendy; Hongbo Zhou | Zendy; W.P. Tong | Zendy

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Grain refinement and enhanced precipitation of Cu–Cr–Zr induced by hot rolling with intermediate annealing treatment

Author(s) -

Depeng Shen,

Hongbo Zhou,

W.P. Tong

Publication year - 2019

Publication title -

journal of materials research and technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.832

H-Index - 44

eISSN - 2214-0697

pISSN - 2238-7854

DOI - 10.1016/j.jmrt.2019.06.019

Subject(s) - materials science , ultimate tensile strength , annealing (glass) , microstructure , electrical resistivity and conductivity , precipitation , alloy , composite material , conductivity , metallurgy , grain size , hot rolled , electrical engineering , physics , meteorology , chemistry , engineering

A new process of hot rolling with intermediate annealing is developed to increase the strength and electric conductivity of the Cu-1Cr-0.1 Zr (wt.%) alloy. The process can refine the crystalline structure and accelerate the speed of precipitation simultaneously, and a combination of high ultimate tensile strength of 522 MPa, excellent electrical conductivity of 81.9 IACS% has been achieved. The results show the higher strain rate and temperature, the higher speed of precipitation. In addition, the microstructure and property of the strip processed by HR-6˜723 K is non-uniform through the thickness, and the top layer with ˜0.2 mm thickness shows a higher tensile strength and electrical conductivity than that of the overall rolled sheet.

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