首页|Ti-8Al-1Mo-1V合金等轴α相的静态粗化行为

Ti-8Al-1Mo-1V合金等轴α相的静态粗化行为

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
为深入了解Ti-8Al-1Mo-1V钛合金等轴α相在退火过程中的演变行为,基于粗化指数n及α界面迁移激活能的计算对其静态粗化机制进行研究.n=6的结果表明,等轴α相具有特殊的粗化机制.计算得到的α界面迁移激活能为138 kJ/mol,接近纯钛的晶粒长大激活能.这表明等轴α的粗化主要是由钛原子穿越α/α界面的自扩散导致.基于研究结果,建立等轴α相在α+β相区的静态粗化动力学模型.最后,分析等轴α相粗化行为对拉伸性能的影响.
Static coarsening behavior of equiaxed α phase in Ti-8Al-1Mo-1V alloy
To get a deep understanding of the evolution behavior of equiaxedαphase in Ti-8Al-1Mo-1V alloy during annealing, its static coarsening mechanism was studied based on the calculations of coarsening exponent n and the activation energy forαboundary migration. The result of n=6 indicates a special coarsening mechanism of equiaxedαphase. The activation energy forαboundary migration is calculated to be 138 kJ/mol, which is close to the activation energy for grain growth of pure α-Ti. It is revealed that the coarsening of equiaxed α can be mainly attributed to the self-diffusion of Ti atoms across the α/α boundaries. Based on the experimental findings, a static coarsening kinetics model of equiaxedαgrains in theα+βfield is established. At last, the effects of the coarsening behavior of equiaxedαon tensile properties were studied.

static coarseningkineticsmodeltensile propertiesTi-8Al-1Mo-1V

石晓辉、曹祖涵、范智渊、Jürgen ECKERT、乔珺威

展开 >

太原理工大学 材料科学与工程学院,太原 030024

Erich Schmid Institute of Materials Science, Austrian Academy of Sciences, LeobenA-8700, Austria

Department of Materials Science, Chair of Materials Physics, Montanuniversität Leoben, LeobenA-8700, Austria

静态粗化 动力学 模型 拉伸性能 Ti-8Al-1Mo-1V

authors are grateful for the financial supports from the China Scholarship CouncilNational Natural Science Foundation of China

20190693501351801132

2021

10.1016/S1003-6326(21)65603-0

中国有色金属学报(英文版)
中国有色金属学会

中国有色金属学报(英文版)

CSTPCDCSCDSCI
影响因子：1.183
ISSN：1003-6326
年,卷(期)：2021.31(6)
  • 3
  • 3