Transactions of Materials and Heat Treatment

Title：Mechanical analysis on compressive deformation of Ti-6Al-4V titanium alloy with 0.3% hydrogen under different strain rates and pulse voltages

Authors： Chen Wei

Unit： Zhejiang Industry Polytechnic College

KeyWords： Ti-6Al-4V titanium alloy pulse voltage compression deformation hydrogenation quasi-cleavage transcrystalline fracture

ClassificationCode：TG146

year,vol(issue):pagenumber：2019,44(1):161-165

Abstract：

The Ti-6Al-4V titanium alloy with 0.3% hydrogen was prepared by the solid hydrogen filling method, and the influences of strain rate and pulse voltage on its compressive deformation behavior were studied by the universal mechanical testing machine. The results show that the microstructure of Ti-6Al-4V titanium alloy with 0.3% hydrogen changes significantly compared with that of the titanium alloy without hydrogen. When the pulse voltage is applied, the elongations of titanium alloy both increase greatly, and when the voltage increases to 80 V, the titanium alloy with 0.3% hydrogen has a significantly lower yield strength than that of the titanium alloy without hydrogen. When the strain increases, the temperature of titanium alloy increases firstly and then decreases during the compression process. And when the pulse voltage is applied to the titanium alloy, many shallow dimples are formed. Thus, the pulse voltage applied to the Ti-6Al-4V titanium alloy with 0.3% hydrogen can improve its plasticity and produce quasi-cleavage transcrystalline fracture.

Funds：

国家基金重大科研仪器研制项目（4142780076）

陈伟（1989－），男，硕士，助教，E-mail：545338971@qq.com

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