Transactions of Materials and Heat Treatment

Title：Research progress and performance evaluation of TC8 titanium alloy in China

Authors： Wang Jian Feng Qiuyuan Zhang Yongqiang Chen Zhiyong Qiao Lu Mao Lingling Li Wei Wang Dingchun Gao Qi

Unit： 1.The Research Institute of BAOTI BAOTI Group Company Limited 2. The Research Institute of BAOTI Baoji Titanium Industry Company Limited 3. Institute of Metal Research Chinese Academy of Sciences

KeyWords： titanium alloy TC8 titanium alloy BT8 titanium alloy material properties mechanical property

ClassificationCode：TG146.2

year,vol(issue):pagenumber：2019,44(10):1-7

Abstract：

From laboratory development to industrial mass production and application, the research progress of TC8 titanium alloy was reviewed, and the key technologies during the material manufacture were expatiated. Then, its mechanical properties of tensile, long-lasting, creep, thermal stability, fatigue and its physical properties of linear expansion coefficient and specific heat at different temperatures were introduced, and the material properties were evaluated comprehensively by comparing with BT8 titanium alloy made in Russia. Furthermore, the forging parts of rotor blades were manufactured by the alloy bars, and its processing properties were verified. The results show that TC8 titanium alloy has excellent mechanical properties fitting with the requirements of technical conditions to reach or exceed that of BT8 titanium alloy and can entirely meet the high temperature titanium alloy need for engine. Thus,TC8 titanium alloy appears preferable processing properties with good forging performance and machining characteristics, which can be treated by conventional heat treatment.

Funds：

国家重大项目资助（JPPT-2017-073）

作者简介：王俭（1969-），男，学士，高级工程师 E-mail：wangjian@baoti.com 通信作者：冯秋元（1974-），男，博士，高级工程师 E-mail：fengqiuyuan2003@163.com

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