郭富安2，唐謨堂1
(1. 中南大學(xué) 冶金科學(xué)與工程學(xué)院，長(zhǎng)沙 410083；
2. 蘇州有色金屬加工研究院，蘇州 215026)
摘 要:
關(guān)鍵字: Cu-Cr-Zr-Mg-RE合金；微觀組織；電導(dǎo)率；抗拉強(qiáng)度
YANG Chun-xiu2, GUO Fu-an1,TANG Mo-tang2
（1. School of Metallurgical Science and Engineering, Central South University,
Changsha 410083, China;
2. Suzhou Institute for Nonferrous Metals Processing Technology, Suzhou 215026, China）
Abstract:The microstructure of Cu-0.43%Cr-0.17%Zr-0.05%Mg-0.05%RE (mass fraction) alloy was studied by high resolution transmission electron microscopy and optical microscopy. The electrical conductivity, tensile strength and micro-hardness of this alloy after cold rolling and aging treatment were investigated. The results show that the alloy aged at 450 ℃ for 4 h has good combination of physical and mechanical properties. The analyses of HRTEM show that three kinds of chromium-rich phase, such as club-shaped, hexagonal shape and spherical shape exist in the alloy. The zirconium-rich phase and decomposing CrCu2(Zr, Mg) phase are observed at aging temperature of 400 ℃.
Key words: Cu-Cr-Zr-Mg-RE alloy; microstructure; electrical conductivity; tensile strength
