Strengthening of Cu-Ti alloys by stabilization of metastable β′ phase with addition of Gd element

被引：0

作者：

Liao, Yumin ^{[1
]}

Guo, Chengjun ^{[1
]}

Zhou, Chenyang ^{[1
]}

Xie, Weibin ^{[1
]}

Yang, Bin ^{[1
]}

Wang, Hang ^{[1
]}

机构：

[1] Jiangxi Univ Sci & Technol, Fac Mat Met & Chem, Ganzhou 341000, Jiangxi, Peoples R China

来源：

MATERIALS TODAY COMMUNICATIONS | 2024年 / 39卷

关键词：

Cu-Ti alloy; Gd element; First-principles calculation; Metastable phase; Strengthening; 1ST-PRINCIPLES; MICROSTRUCTURE;

D O I：

10.1016/j.mtcomm.2024.108671

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Strengthening of Cu-Ti alloys with alloying elements is usually accompanied by decreasing of electrical conductivity. Previous study has found that the metastable phase (beta '-Cu4Ti) is coherent with Cu matrix which can greatly improve its mechanical performance. In the present work, first-principles calculation was employed to find potential alloying element which can improve the stability of the metastable phase (beta '-Cu4Ti); at the same time less amount of Ti atoms remains as solutes in order to maintain moderate electric conductivity. In total effects of 84 alloying elements on beta '-Cu4Ti stability were calculated, among which Gd was found to be possible to hinder the beta '-Cu4Ti dissolved into matrix. Experiments were carried out to confirm the behavior of Gd as alloying element.

引用

页数：8

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