Effect of cooling rate on microstructure and mechanical properties of TC16 titanium alloy

被引：0

作者：

Zhang Z.-Q. ^{[1
]}

Dong L.-M. ^{[1
]}

Hu M. ^{[1
,2
]}

Lei X.-F. ^{[1
]}

Yang Y. ^{[3
]}

Yang R. ^{[1
]}

机构：

[1] Institute of Metal Research, Chinese Academy of Sciences, Shenyang

[2] School of Materials Science and Engineering, Northeastern University, Shenyang

[3] Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou

来源：

Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals | 2019年 / 29卷 / 07期

关键词：

Cooling rate; Cyclic tensile deformation; Mechanic property; Microstructure; TC16 titanium alloy;

D O I：

10.19476/j.ysxb.1004.0609.2019.07.07

中图分类号：

学科分类号：

摘要：

The microstructure evolutions of the TC16 titanium alloy corresponding to different cooling rates at 800℃ were investigated by techniques of XRD, SEM and TEM. The tensile properties of each sample were finally evaluated. The results show that TC16 titanium alloy consists of primary α phase, α″ martensite, thermal ω phase and metastable β phase in both water quenching and air cooling samples, but only primary α phase and metastable β phase are identified in furnace cooled sample. The volume fraction and grain size of primary α phase in both water quenching and air cooling samples are nearly the same, which are smaller than that of furnace cooling one. The dual yielding phenomenon was observed on the engineering stress-strain curves of both water quenching and air cooling samples. With decreasing the cooling rate, the yield strength of TC16 titanium alloy increases. The ultimate tensile strength of water quenching and air cooling samples exhibits the same value which is larger than that of furnace cooling one. Although the slight difference on the tensile strength for three kinds of samples, the elongation and area reduction representing the ductility are nearly the same. © 2019, Science Press. All right reserved.

引用

页码：1391 / 1398

页数：7

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