Ti-6Al-4V 合金の二相組織における変形挙動の結晶塑性解析

Translated title of the contribution: Crystal plasticity analysis on the deformation behavior in the dual phase microstructure in Ti-6Al-4V alloy

河野 義樹, 大橋 鉄也, 奥山 彫夢, 田中 將己

Research output: Contribution to journalConference article

Abstract

Vanadium contents in the β phase in the Ti-6Al-4V alloy (Ti-64) changes by the heat treatment, plastic working, and so on, and its mechanical properties are also changed; it would affect the deformation mechanisms of microstructures in Ti-64; however, it is not fully understood. In this study, a sandwiched microstructure of α and β phases, where the crystal orientations satisfied Burgers orientation relation, was assumed, and the uniaxial tensile analysis was conducted using a crystal plasticity finite element method (CPFEM). The results showed that the elastic constants of the β phase was higher than that of α phase when the vanadium content of the β phase was high and the tensile direction corresponded to the direction perpendicular to the c-axis; it resulted in higher stress within the β phase in the range of elastic deformation. In contrast, there was a possibility that such relationship of stresses between α and β phases was not established by conditions in the range of plastic deformation.
Translated title of the contributionCrystal plasticity analysis on the deformation behavior in the dual phase microstructure in Ti-6Al-4V alloy
Original languageJapanese
Pages (from-to)149
Journal計算力学講演会講演論文集
Volume2017
Issue number0
DOIs
Publication statusPublished - 2017

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