典型热处理工艺对Ti40合金蠕变性能的影响

来源期刊：中国有色金属学报2010年第z1期(下册)

论文作者：辛社伟 赵永庆 李倩 吴欢 杨海瑛

文章页码：654 - 658

关键词：Ti40合金；热处理；蠕变

Key words：Ti40 alloy; heat treatment; creep

摘    要：研究在(600 ℃, 4 h, AC)(工艺1)和(850 ℃, 1 h, WQ)+(550 ℃, 6 h, AC)(工艺2)这2种典型热处理工艺下合金的蠕变性能，并对其进行观察。研究结果表明：在较低蠕变温度时(500~520 ℃)，工艺1热处理具有更好的抗蠕变性能；在较高蠕变温度时(535~550 ℃)，工艺2热处理具有更好的抗蠕变性能。这主要是由于这2种热处理工艺对应的组织不同，从而造成蠕变空洞不同，对应的内应力、局部障碍对蠕变位错阻碍不同。

Abstract: Two typical heat treatments were designed to study the creep behavior of Ti40 alloy: 1#, 600 ℃, 4 h, AC; 2#, (850 ℃, 1 h, WQ)+(550 ℃, 6 h, AC). The results show that as-1# samples heat treated have higher creep resistance in 500- 520 ℃ and as-2# samples heat treated in 535-550 ℃. This is mainly due to the different microstructures after two heat treatments. The different microstructures lead to different creep cavities and internal stresses during creep process, and indicate different creep characteristics at different temperatures.

基金信息：国家重点基础研究发展计划资助项目