Ta对Ti₂AlNb基合金微观组织和高温性能的影响

来源期刊：中国有色金属学报2000年第z1期

论文作者：彭继华 李世琼 毛勇 孙训方

文章页码：50 - 54

关键词：金属间化合物； Ti₂AlNb基合金； 微观组织； 高温力学性能

Key words：Ti₂AlNb based alloy； microstructure； elevated temperature mechanical properties

摘    要：对Ti-Al-Nb-Ta系列合金的组织结构、高温拉伸力学性能进行了研究。结果表明 ,合金中Ta替代部分Nb ,提高了合金的 β/B2转变点温度 ,有利于细化合金的微观组织结构 ;随着Ta含量增加 ,Ti₂AlNb基合金在650℃的屈服强度增加。

Abstract: The microstructures and elevated temperature tensile properties of Ti₂AlNb based alloys were studied systematically. The results show that the B2 transus temperatures of Ti₂AlNb based alloys are increased by substituting a part of Nb with Ta. Addition of Ta is beneficial to refining the microstructures of Ti₂AlNb based alloys. The tensile yield strength at 650 ℃ is increased with increasing amount of Ta for Ti₂AlNb based alloys.