固溶温度对Ti-Ta合金微观结构及阻尼性能的影响
Effect of solution temperature on microstructure and damping properties of Ti-Ta alloy
张文玉 1刘先兰 1伍杰 1何文鹏 1田子豪 1全阳1
作者信息
- 1. 湖南工学院智能制造与机械工程学院,湖南衡阳 421002
- 折叠
摘要
将真空熔炼制备并冷轧后的Ti-32Ta合金依次在600、700和800 ℃下进行固溶处理,通过光学显微镜、X射线衍射仪、扫描电镜、DSC热分析仪、DMA动态力学分析仪等对其进行微结构和阻尼性能表征,研究固溶处理温度对Ti-32Ta合金微观结构和阻尼性能的影响.结果表明,Ti-32Ta合金的再结晶温度在700～800 ℃之间,600 ℃固溶处理样品的组织为未再结晶组织,700 ℃和800℃固溶处理样品的组织中再结晶等轴晶粒随温度的升高而增多;Ti-32Ta合金经固溶处理后相变点Ms提高,600℃和700℃固溶处理样品的相变温度,相比于未固溶处理时的相变温度440 K(167℃)提高了39℃,800℃固溶处理样品的相变温度提升了18℃;固溶温度对Ti-32Ta合金的阻尼性能影响不明显,但工作温度对阻尼性能有较大的影响,当工作温度升高到150℃以上,材料的阻尼性能随温度升高呈现迅速升高的趋势.
Abstract
A Ti-32Ta alloy was prepared by vacuum melting and cold rolling.After solution treatment at 600,700 and 800 ℃,respectively,the microstructure and damping properties of the tested alloy were characterized by means of OM,XRD,SEM,DSC thermal analyzer and DMA dynamic mechanics analyzer.The effect of solution treatment temperature on microstructure and damping properties of the Ti-32Ta alloy was studied.The results show that the recrystallization temperature of the tested alloy is between 700 ℃ and 800 ℃,and the microstructure of the specimen treated at 600 ℃ is non-recrystallized,while the specimens treated at 700 ℃ and 800℃have recrystallized equiaxed grains which increased with the temperature increasing.The phase transition point of the tested alloy increases after solid solution treatment.Compared with the phase transition point of 440 K(167℃)for the untreated Ti-32Ta alloy,the phase transition point of specimens treated at 600 ℃ and 700 ℃ increases by 39 ℃,and that of specimens treated at 800 ℃ increases by 18 ℃.The damping properties of the Ti-32Ta alloy are not affected by the solution treatment temperature,but are greatly affected by the working temperature.When the working temperature rises above 150 ℃,the damping properties of the tested alloy increase rapidly with the increase of temperature.
关键词
Ti-32Ta合金/固溶处理/微结构/阻尼性能/相变温度Key words
Ti-32Ta alloy/solution treatment/microstructure/damping properties/phase transition temperature引用本文复制引用
基金项目
湖南省科技创新项目(2021RC1008)
湖南省自然科学基金(2021JJ350109)
大学生创新创业训练计划(202211528005)
大学生创新创业训练计划(202311528005)
大学生创新创业训练计划(S202111528016)
出版年
2024
NETL
NSTL
维普
万方数据