张治民,刘海军,任璐英,闫江鹏,王强,薛勇.热处理对热等静压态TC4合金降温多道次变形微观组织的影响[J].稀有金属材料与工程,2020,49(4):1372~1378.[Zhang Zhimin,Liu Haijun,Ren Luying,Yan Jiangpeng,Wang Qiang,Xue Yong.Effect of heat treatment on microstructure of hot isostatic pressedTC4 alloy under multi-pass deformation[J].Rare Metal Materials and Engineering,2020,49(4):1372~1378.]
热处理对热等静压态TC4合金降温多道次变形微观组织的影响
投稿时间:2019-07-05  修订日期:2019-11-14
中文关键词:  TC4合金  多道次变形  热处理  组织演变
基金项目:国家自然科学基金(51675492)
中文摘要:
      采用Gleeble-1500D热模拟试验机,在应变速率0.001s-1 ~5s-1的条件下对热等静压态TC4合金进行降温多道次热压缩实验,总变形量为70%。热等静压态TC4合金采用935℃+60min+水冷固溶处理,分别在520℃+4/6h+水冷和560℃+4/6h+水冷下进行时效处理;多道次变形后热等静压态TC4合金分别在945℃+60min+水冷进行固溶处理和560℃+6h+水冷进行时效处理。结果表明:热等静压态试样组织随着时效温度的升高,板条状次生α相含量减少;而随着时效时间变长,等轴α相逐渐增多,组织主要以次生条状的α相与等轴α为主。多道次变形态试样,在应变速率为0.1s-1时,合金经过950→850℃降温多道次变形后再通过固溶-时效处理,获得了较为理想的三态组织。
Effect of heat treatment on microstructure of hot isostatic pressedTC4 alloy under multi-pass deformation
英文关键词:TC4 titanium alloy  multi-pass deformation  heat treatment  microstructuralSevolution
英文摘要:
      The multi-pass thermal compression experiments of hot isostatic pressed TC4 titanium alloy were carried out on the Gleeble-1500D thermal simulator at strain rate of 0.001s-1~5s-1, the total deformation was 70%. The hot isostatic pressed TC4 titanium alloy was treated by 935℃+60 min+water quench solution treatment, and520℃+ 4/6h+water quench and 560+4/6h+water quench aging treatment, respectively. After multi-pass deformation, the samples were treated by solution treatment at 945℃ +60min+water quench and aging treatment at 560℃ +6h+water quench. The results show that the content of secondary α phase of hot isostatic pressed TC4 titanium alloy decreases with the increase of aging temperature, while the equiaxed α phase increases with the increase of aging time, and the microstructure mainly consists of secondary strip α phase and equiaxed α phase. Meanwhile, the ideal tri-modal microstructure(equiaxed α phase + secondary strip α phase + β transformation phase) of hot isostatic pressed TC4 titanium alloy can be obtained by solution and aging treatment during multi-pass deformation at the deformation temperature from 950℃ to 850℃and strain rate of 0.1s-1.
作者单位E-mail
张治民 中北大学 材料科学与工程学院 山西省 太原市 030051 zhangzhimin@nuc.edu.cn 
刘海军 中北大学 材料科学与工程学院 山西省 太原市 030051  
任璐英 中北大学 材料科学与工程学院 山西省 太原市 030051  
闫江鹏 中北大学 材料科学与工程学院 山西省 太原市 030051  
王强 中北大学 材料科学与工程学院 山西省 太原市 030051  
薛勇 中北大学 材料科学与工程学院 山西省 太原市 030051 yongxue395@163.com 
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