700℃高温高强钛合金BTi-6431S的组织性能

Microstructure and mechanical properties of a 700℃ high temperature and high strength titanium alloy BTi-6431S

本文较全面的介绍了一种650～700℃短时使用的新型高温高强钛合金BTi-6431S的组织和性能,包括该合金的室温拉伸和高温拉伸、短时蠕变和短时持久及显微组织。试验数据表明:该合金棒材、板材具有较高的室温强度和室温塑性,特别是在650～700℃显示出比现有常规高温钛合金更高的高温强度以及大载荷持久和蠕变的良好匹配,可用于650～700℃温度短时使用的宇航结构件。

Microstructure and mechanical properties such as room and elevated temperature tensile properties,instantaneous creep properties and rupture properties of a elevated temperature and high strength titanium alloy BTi-6431S were studied in this paper.The results show that BTi-6431S alloy has higher room and elevated temperature mechanical properties,and can be used as structure parts in aero-space industry at 650～700℃.