Influence of Pre-annealing Temperature on Microstructure Evolution and Mechanical Properties of Semi-solid Copper Alloy Billet

被引：0

作者：

Sun Zhen ^{[1
]}

Cui Yunxin ^{[1
]}

Zhang Xiongchao ^{[1
]}

Zhou Yuhang ^{[1
]}

Chen Hao ^{[1
]}

Xiao Han ^{[1
]}

机构：

[1] Kunming Univ Sci & Technol, Fac Mat Sci & Engn, Kunming 650093, Yunnan, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2024年 / 53卷 / 02期

关键词：

pre-annealing temperature; semi-solid copper alloy; microstructure evolution; element segregation; hardness; SIMA; BEHAVIOR;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The as-cast CuSn10P1 copper alloy was pre-annealed and then prepared into semi-solid billets by cold rolling isothermal treatment strain-induced melting activation (CRITSIMA) method. The effects of pre-annealing temperature on the microstructure evolution and mechanical properties of semi- solid copper alloy billets were studied by OM, SEM, EDS, XRD, electron probe and Brinell hardness analyses. The results show that with increasing the pre-annealing temperature, the average grain size of the semi-solid copper alloy billet is increased, and the shape factor and liquid phase ratio are decreased. With increasing the pre-annealing temperature, Sn element content is increased in the solid solution of a-Cu phase, segregation of Sn element is weakened, the content of intergranular brittle and hard phase d is phase decreased, and the Brinell hardness is gradually decreased. The new phase Cu13.7Sn is detected in the semi-solid copper alloy billet, which is related to the high segregation of the intergranular Sn element. The semi-solid copper alloy billet prepared by pre-annealing at 600. for 2 h has fine and uniform microstructure and good mechanical properties. The average grain size is 68.34 mu m, the shape factor is 0.78, and the Brinell hardness is 1254.4 MPa.

引用

页码：457 / 464

页数：8