Transactions of Materials and Heat Treatment

Title：Influence of isothermal forging strain rate on mechanical properties and wear resistance properties of mechanical disk for titanium alloy TC4

Authors： Zhang Zaiping

Unit： Changzhou Vocational Institute of Engineering

KeyWords： mechanical disk titanium alloy TC4 isothermal forging strain rate mechanical property wear resistance property

ClassificationCode：TG146.2+3 ;TG319

year,vol(issue):pagenumber：2018,43(7):187-191

Abstract：

The mechanical disk parts of titanium alloy TC4 were forged at different isothermal forging strain rates, and the mechanical properties and wear resistance properties at room temperature were tested and analyzed. The results show that the isothermal forging strain rate has a significant influence on the mechanical properties and wear resistance properties of mechanical disk parts for titanium alloy TC4. With the isothermal forging strain rate increasing from 6×10-4 s-1 to 6×10-3 s-1，the tensile strength of sample decreases first and then increases, and the elongation after fraction and wear volume increase first and then decrease. Compared with the strain rate of 6×10-4 s-1, the tensile strength at the strain rate of 6×10-3 s-1 increases by 15 MPa, and the elongation after fraction reduces by 1.9% slightly as well as the wear volume reduces by 3×10-3 mm3. Furthermore, the mechanical properties and wear resistance properties of sample increase first and then decrease, and the optimized isothermal forging strain rate of mechanical disk parts for titanium alloy TC4 is 6×10-3 s-1.

Funds：

2014年度江苏省高校“青蓝工程”资助项目（ZY6107016）；常州工程职业技术学院科研课题（ZY6107016）

张在平(1974-)，男，硕士，讲师，E-mail：zealping@126.com

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