Transmission of {332} ⟨113⟩ twins across grain boundaries in a metastable β-titanium alloy

被引：56

作者：

Lin, Fengxiang ^{[1
]}

Marteleur, Matthieu ^{[2
]}

Jacques, Pascal J. ^{[2
]}

Delannay, Laurent ^{[1
]}

机构：

[1] Catholic Univ Louvain, Inst Mech Mat & Civil Engn iMMC MEMA, Av G Lemaitre 4, B-1348 Louvain La Neuve, Belgium

[2] Catholic Univ Louvain, Inst Mech Mat & Civil Engn iMMC IMAP, Pl St Barbe 2, B-1348 Louvain La Neuve, Belgium

来源：

INTERNATIONAL JOURNAL OF PLASTICITY | 2018年 / 105卷

关键词：

Crystal plasticity; Twinning; Residual stresses; Finite element modeling; EBSD; FINITE-ELEMENT MODEL; CRYSTAL-PLASTICITY; TEXTURE DEVELOPMENT; MAGNESIUM ALLOYS; DEFORMATION; RECRYSTALLIZATION; POLYCRYSTALS; STEELS; TRANSFORMATION; REORIENTATION;

D O I：

10.1016/j.ijplas.2018.02.012

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Plastic deformation by dislocation slip and twinning is investigated in a metastable body centered cubic Ti-Mo alloy. Experimental crystal orientation maps show twin lamellae connected across grain boundaries, especially when they host low angle misorientation angles. A three-dimensional crystal plasticity based finite element model (CPFEM) is used to predict internal stresses due to deformation twinning. It is found that twin transmission across grain boundaries relaxes the strong back-stresses at the twin tip more than dislocation slip does. CPFEM predictions also indicate that the forward-stresses, which promote twinning in the adjacent grain, depend not only on the crystal misorientation angle but also on the misorientation axis, and the inclination of the grain boundary plane.

引用

页码：195 / 210

页数：16

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