(宝钛集团有限公司，宝鸡 721014)
摘 要: 较全面地介绍一种650~700 ℃时短时使用的新型高温高强钛合金BTi-6431S的组织和性能，包括该合金的室温和高温拉伸性能、短时蠕变和短时持久性能及显微组织。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 ℃短时使用的宇航结构件。
关键字: BTi-6431S合金；组织；力学性能
（Baoti Group Co., Ltd., Baoji 721014, China）
Abstract:The microstructure and mechanical properties, such as room and elevated temperature tensile properties, instantaneous creep properties and rupture properties of an elevated temperature and high strength titanium alloy BTi-6431S at 650−700 ℃ were studied. 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 ℃.
Key words: BTi-6431S alloy; microstructure; mechanical property
