Transactions of Materials and Heat Treatment

Title：Influence of forging process on microstructure and properties of forged TC11 disc

Authors： Li Jinyuan Wang Hongquan Hou Peng Wang Li

Unit： Western Titanium Technologies Co. Ltd.

KeyWords： titanium alloy forging forged disc microstructure mechanical properties

ClassificationCode：TG146.23

year,vol(issue):pagenumber：2015,40(5):7-10

Abstract：

TC11 titanium alloy discs were made by 3 t and 1250 t hammer presses and different free forging processes, and their mechanical properties at room temperature and high temperature, and ultrasonic noise level were tested respectively. The results show that the properties obtained by the above forging processes all meet the requirement, and their microstructures are all equated α phase with duplex microstructure of lamellar α phase and strip α phase with lamellar α phase. However, the microstructures of discs made by the latter process are finer and more uniform. The tensile strength at room temperature and high temperature obtained from 1250 t hammer press is about 50 and 20 MPa higher than that obtained by 3 t hammer press respectively. The yield strength is about 20 MPa higher, but the elongation and reduction in area are almost unchanged. The ultrasonic noise level value obtained by 1250 t hammer press is 3 dB lower than that obtained by 3 t hammer press. So, the properties obtained by 1250 t hammer press are improved comparing with that obtained by 3 t hammer press.

Funds：

国家科技支撑计划(2007BAE07B04)

李进元（1980-），男，学士，工程师

Reference：

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