摘要
通过d电子理论设计出新型两相钛合金Ti_(84)Al_(11)FeMo_(4),分析了物相组成随温度的变化关系。结合热力学计算结果,分别研究了700、770℃以及850℃不同时效温度下钛合金的微观组织与力学性能的演化关系。结果表明,随着时效处理温度的提高,Ti_(84)Al_(11)FeMo_(4)钛合金微观组织中β相的含量逐渐增多。当时效温度增加到850℃时,β析出相的含量最多,且在粗β相间分布着大量细小尺寸的β相。Ti_(84)Al_(11)FeMo_(4)钛合金经不同时效温度处理后表现出不同的力学性能,在700℃和770℃下时效处理后可显著提高钛合金的压缩强度,而在850℃下时效后可以实现钛合金的强度和塑性的同步提升。
A novel two-phase titanium alloy of Ti_(84)Al_(11)FeMo_(4)was designed based on d-electron theory and the phase composition as a function of temperature was analyzed.Combined with the thermodynamic calculation results,the evolution relationship between the microstructure and mechanical properties of titanium alloys at different aging temperatures of 700℃,770℃and 850℃was studied,respectively.The results show that the amount ofβphase in the microstructure of Ti_(84)Al_(11)FeMo_(4)titanium alloy gradually increases with the increase of aging temperature.When the aging temperature is increased to850℃,the amount ofβprecipitates reaches the maximum,and a large number of small-sizedβphases are distributed among the coarseβphases.Ti_(84)Al_(11)FeMo_(4)titanium alloy exhibits different mechanical properties after aging treatment at different temperatures.The compressive strength of titanium alloy could be significantly improved after aging at 700℃and 770℃,while the high strength and ductility could be simultaneously obtained after aging at 850℃.
作者
张雪峰
陈敏
刘许旸
高友智
韦良晓
蔡俊豪
倪梓洁
陈新才
Zhang Xuefeng;Chen Min;Liu Xuyang;Gao Youzhi;Wei Liangxiao;Cai Junhao;Ni Zijie;Chen Xincai(Panzhihua University,Panzhihua 617000,Sichuan,China;Sichuan Vanadium&Titanium Industrial Technology Institute,Panzhihua 617000,Sichuan,China;College of Aerospace Engineering,Chongqing University,Chongqing 400044,China)
出处
《钢铁钒钛》
CAS
北大核心
2022年第6期66-70,77,共6页
Iron Steel Vanadium Titanium
基金
四川省重点研发项目(2020 YFG0423,2022 YFG0286)。
