Effect of Different Molds on Microstructure and Mechanical Properties of Titanium Alloys

被引：0

作者：

Zong, Xuewen ^{[1
]}

Liu, Wenjie ^{[1
]}

Gao, Zhongtang ^{[1
]}

Xu, Wenbo ^{[2
]}

Gao, Qian ^{[1
]}

Wang, Lei ^{[1
]}

机构：

[1] School of Mechanical Engineering, Xi'an University of Science and Technology, Xi'an,710054, China

[2] Henan Institute of Technology, Xinxiang,453003, China

来源：

Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering | 2020年 / 49卷 / 05期

关键词：

Titanium alloys;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The effects of different casting molds on the microstructures and mechanical properties of ZTC4 titanium alloy were studied. The effects of cooling rate, solidification rate and solidification time on the microstructures and mechanical properties of ZTC4 titanium alloy were studied by numerical simulation and experimental analysis. The results show that compared with the ceramic sample, the graphite sample has better heat dissipation effect, faster cooling speed and higher solidification speed, which makes the microstructure of the sample be fine lath martensite α produced by quenching, with smaller grain size, more orientation and larger solidification thickness. The yield strength, tensile strength and hardness of the mechanical properties are increased by 6.7%, 2.6% and 4.2%, respectively, but the elongation and section shrinkage are decreased by 11.62% and 34.5%, respectively. Besides, different positions of the same mold have some influence on the cooling rate. The cooling rate at different positions of the sample is in the order of middle > bottom > top. © 2020, Science Press. All right reserved.

引用

页码：1681 / 1688

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