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Open AccessArticle

Relationship between Microstructure and Properties of Cu–Cr–Ag Alloy

by 1,2,3, 1,2,*, 1,2, 1,2, 1,2 and 1,2
1
State Key laboratory of Nonferrous Metals and Processes, GRINM Group Co., Ltd, Beijing 100088, China
2
GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
3
General Research Institute for Nonferrous Metals, Beijing 100088, China
*
Author to whom correspondence should be addressed.
Materials 2020, 13(3), 732; https://doi.org/10.3390/ma13030732
Received: 21 December 2019 / Revised: 23 January 2020 / Accepted: 27 January 2020 / Published: 6 February 2020
The microstructure evolution and properties of a Cu–Cr–Ag alloy during continuous extrusion and an aging process were studied by Scanning Electron Microscope (SEM) and Transmission Electron Microscope (TEM). Owing to strong shear deformation that happened during continuous extrusion with working temperatures of 450 to 480 °C, a larger number of fine grains were obtained. Both face-centered cubic (FCC) and body-centered cubic (BCC) precipitates simultaneously existed in the matrix when aged for 450 °C for 2 h, and the Cr phases with BCC structure had an N–W relationship with the matrix. After continuous extrusion, 60% cold deformation, 875 °C × 1 h solid solution treatment, 60% cold deformation, 450 °C × 2 h aging treatment, and 70% cold deformation, the Cu–Cr–Ag alloy acquired excellent comprehensive properties: tensile strength of 494.4 MPa, yield strength of 487.6 MPa, and electrical conductivity of 91.4% IACS. View Full-Text
Keywords: Cu–Cr–Ag alloy; continuous extrusion; aging process; microstructure; physical properties Cu–Cr–Ag alloy; continuous extrusion; aging process; microstructure; physical properties
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MDPI and ACS Style

Liang, D.; Mi, X.; Peng, L.; Xie, H.; Huang, G.; Yang, Z. Relationship between Microstructure and Properties of Cu–Cr–Ag Alloy. Materials 2020, 13, 732. https://doi.org/10.3390/ma13030732

AMA Style

Liang D, Mi X, Peng L, Xie H, Huang G, Yang Z. Relationship between Microstructure and Properties of Cu–Cr–Ag Alloy. Materials. 2020; 13(3):732. https://doi.org/10.3390/ma13030732

Chicago/Turabian Style

Liang, Dong; Mi, Xujun; Peng, Lijun; Xie, Haofeng; Huang, Guojie; Yang, Zhen. 2020. "Relationship between Microstructure and Properties of Cu–Cr–Ag Alloy" Materials 13, no. 3: 732. https://doi.org/10.3390/ma13030732

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