Effects of Solidification Rate on Microstructure and Mechanical Properties of ZChSnSb8-4 Alloy

Liu Jianxiu; Liu Zihao; Fan Jianglei; Wu Shen; Li Ying; Shi Zhaoxia

doi:10.15980/j.tzzz.2022.08.003

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Effects of Solidification Rate on Microstructure and Mechanical Properties of ZChSnSb8-4 Alloy
Vol. 42, Issue 8, Pages: 936-939(2022)
Published： 2022 ，
DOI： 10.15980/j.tzzz.2022.08.003

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Liu Jianxiu, Liu Zihao, Fan Jianglei, et al. Effects of Solidification Rate on Microstructure and Mechanical Properties of ZChSnSb8-4 Alloy. [J]. Special Casting & Nonferrous Alloys 42(8):936-939(2022)
DOI：

Liu Jianxiu, Liu Zihao, Fan Jianglei, et al. Effects of Solidification Rate on Microstructure and Mechanical Properties of ZChSnSb8-4 Alloy. [J]. Special Casting & Nonferrous Alloys 42(8):936-939(2022) DOI： 10.15980/j.tzzz.2022.08.003.

摘要

采用定向凝固工艺制备不同定向凝固速率下ZChSnSb8-4合金试样，对ZChSnSb8-4合金中的Cu

相的枝晶间距、SnSb相的晶粒半径、SnSb相的硬度与定向凝固速率进行对比。结果表明，随着生长速度的增大，Cu

相的枝晶间距随着生长速度的增加呈先增加后逐渐稳定的趋势；随着生长速率增大，定向凝固区中SnSb相的晶粒半径逐渐减小，而SnSb相硬度呈增大趋势，当定向凝固速率为100μm/s

SnSb相硬度(HV)最高，为104.8。

Abstract

The specimens of ZChSnSb8-4 alloy at different directional solidification rates were prepared by directional solidification. The dendrite spacing of Cu

phase

grain radius of SnSb phase

hardness of SnSb phase and directional solidification rate in ZChSnSb8-4 alloy were compared. The results indicate that with the increase of growth rate

the dendrite spacing of Cu

phase is increased firstly and then gradually to be stabilized. The grain radius of SnSb phase in directional solidification zone is gradually decreased

while the hardness presents an increasing trend.When the directional solidification rate is 100 μm/s

the hardness of SnSb phase reaches the maximum

which is 104.8 HV.