Thermoactivation Analysis of Temperature Dependence of a Flow Stress in Solid Solutions with a B.C.C. Lattice
作者: S. O. Firstov, T. G. Rogul, M. O. Krapivka, S. I. Chugunova
作者单位: 1I. M. Frantsevich Institute for Problems in Materials Science, NAS of Ukraine, 3 Academician Krzhyzhanovsky Str., UA-03142 Kyiv, Ukraine
刊名: Metallofiz. Noveishie Tekhnol., 2018, Vol.40 (02), pp.219-234
来源数据库: G.V. Kurdyumov Institute for Metal Physics, National Academy of Science of the Ukraine
DOI: 10.15407/mfint.40.02.0219
关键词: Critical shear stressYield stressActivation energy for dislocation motionActivation volume.
原始语种摘要: Comparative analysis of the yield-stress temperature dependences for polycomponent and binary solid solutions with a b.c.c. lattice (AlCrFeCoNi, AlTiVCrNbMo, Ti$_{25}$Zr$_{25}$Hf$_{25}$Nb$_{12.5}$Ta$_{12.5}$, VNbMoTaW, Fe–Cr, Fe–Mo, Fe–W, Cr–Fe), and some pure b.c.c. metals is carried out. Using the thermoactivation analysis, the values of the activation energy of dislocation movement and the activation volume are calculated. As shown, for the binary and polycomponent solid solutions, an increase in athermal component of a flow stress is characteristic in comparison with pure b.c.c. metals. In this case, in comparison with pure metals, multicomponent solid solutions demonstrate an increasing of the thermal component, while for binary b.c.c. alloys, there is a weakening of the temperature...
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  • polycomponent 多组元
  • dislocation 断层
  • stress 应力
  • athermal 无热的
  • Lattice 网格
  • solid 固体
  • temperature 温度
  • analysis 分析
  • concentration 浓度
  • values 价值观