期刊
MATERIALS LETTERS
卷 199, 期 -, 页码 46-49出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2017.04.039
关键词
Copper alloy; Severe plastic deformation; High pressure torsion; Ultrafine grained structure; Aging; Strength; Electrical conductivity
资金
- RFBR [16-33-50139]
- Ministry of Education and Science of the Russian Federation [14.A12.31.0001, 14.Y31.16.8446-NSH]
- Increased Competitiveness Program of NUST [K2-2016-062]
The effect of Cr and Zr contents on the properties of ultra-fine grained (UFG) Cu-Cr-Zr alloys subjected to high-pressure torsion (HPT) was studied. It is found that increasing in chromium content above the solubility limit does not cause additional hardening both after HPT and after subsequent aging. In contrast, excessive alloying with zirconium allows obtaining a structure with a smaller grain size, enhances structure stability during heat treatment and noticeably increases strength with high electrical conductivity of the alloy after HPT and additional aging. (C) 2017 Elsevier B.V. All rights reserved.
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