钒和铬对Ti40阻燃钛合金力学性能的影响机制

来源期刊：中国有色金属学报2008年第7期

论文作者：辛社伟 赵永庆 曾卫东

文章页码：1216 - 1216

关键词：Ti40阻燃钛合金；V；Cr；热稳定性；蠕变行为；力学性能

Key words：Ti40 burn resistant titanium alloy; V; Cr; thermal stability; creep behavior; mechanical properties

摘    要：

Abstract: Four alloys with different contents of V and Cr were prepared on the base of Ti40 alloy. Their properties and microstructures after forging, heat treatment, thermal exposure and creep treatment were tested. The results indicate that the effect of alloying elements V and Cr on mechanical properties at room-temperature, creep behavior and microstructures are similar. With increasing contents of V and Cr, their mechanical properties produce little change, the creep resistant property decreases and microstructure grows, which is mainly due to their characteristics of β-stability element and smaller atomic radius compared with Ti. On the contrary, the effects of V and Cr on the thermal stability are quite different. With increasing V content or decreasing Cr content the thermal stability for the alloy becomes better, which may be due to the different solution characteristics of V and Cr element in titanium alloy that V belongs to isomorphous β-stability element and Cr belongs to eutectoid β-stability element.

基金信息：国家重点民口配套基金资助项目
国家重点基础研究发展计划资助项目