Effects of ti addition on the liquid-phase separation of Cu71Cr29 alloy during rapid cooling

被引：12

作者：

Sun, Zhanbo ^{[1
]}

Guo, Juan ^{[1
]}

Li, Yan ^{[2
]}

Zhu, Yaomin ^{[2
]}

Li, Qian ^{[1
]}

Song, Xiaoping ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, Sch Sci, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China

[2] Henan Univ Sci & Technol, Sch Mat Sci & Engn, Luoyang 471003, Peoples R China

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2008年 / 39A卷 / 05期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1007/s11661-008-9466-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effects of Ti addition on the liquid-phase separation of Cu71Cr29 alloy have been investigated. It is revealed that Ti addition can partly suppress the liquid-phase separation of the alloy melts, resulting in refining of Cr-rich particles formed after liquid-phase separation during rapid cooling. Nanoscaled Cr2Ti and Cu4Ti phases precipitate in the annealed Cu-Cr-Ti ribbons when Ti content attains 2.5 pct. The thermodynamic analyses indicate that the large positive mixing heat between Cu and Cr is reduced by the addition of Ti, leading to the liquid-phase separation occurring at a lower temperature and being driven by a smaller force. However, more Cr and Ti dissolve in Cu solid solution when Ti content is more than 3 pct, and as a result, the electrical resistivity of the ribbons is increased sharply.

引用

页码：1054 / 1059

页数：6

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