锻压技术

我国TC8钛合金研制进展与性能评价

英文标题：Research progress and performance evaluation of TC8 titanium alloy in China

单位：1.宝钛集团有限公司宝钛研究院 2.宝鸡钛业股份有限公司宝钛研究院 3.中国科学院金属研究所

分类号：TG146.2

出版年,卷(期):页码：2019,44(10):1-7

摘要：

从实验室研制到工业化批量生产及应用角度，阐述了TC8钛合金的研制进展，详述了材料研制突破的关键技术，介绍了该钛合金在不同温度下的拉伸、持久、蠕变、热稳定、疲劳等力学性能和线膨胀系数、比热等物理性能，并与俄罗斯BT8钛合金进行对比，综合评价材料性能；通过利用该合金棒材制作转子叶片锻件，验证其工艺性能。结果表明，TC8钛合金具有优异的力学性能，其力学性能符合技术条件要求，达到甚至超过BT8钛合金的性能水平，完全满足发动机用高温钛合金材料需求；该钛合金锻造性能良好，可采用常规的热处理方式，切削加工性好，表现出较好的工艺性能。

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.

基金项目：

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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