Deformation twinning in the full-α" martensitic Ti-25Ta-20Nb shape memory alloy

被引：134
作者：
Bertrand, Emmanuel [1 ]
Castany, Philippe [2 ]
Yang, Yang [2 ]
Menou, Edern [1 ]
Gloriant, Thierry [2 ]
机构：
[1] Univ Nantes, CNRS, Inst Mat Jean Rouxel IMN, Rue Christian Pauc,BP 50609, F-44306 Nantes 3, France
[2] INSA Rennes, Inst Sci Chim Rennes, CNRS 6226, 20 Ave Buttes Coesmes, F-35708 Rennes 7, France
来源：
ACTA MATERIALIA | 2016年 / 105卷
关键词：
EBSD; Twinning; alpha '' martensite; Titanium; Shape memory alloy; X-RAY-DIFFRACTION; SUPERELASTIC PROPERTIES; TI-24NB-4ZR-8SN ALLOY; MECHANICAL-BEHAVIOR; TRANSFORMATION; MICROSTRUCTURE; TI-24NB-0.5N;
D O I：
10.1016/j.actamat.2015.12.001
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Deformation twinning of the Ti-25Ta-20Nb (mass%) shape memory alloy is characterized using EBSD and TEM. The selfaccommodating alpha '' microstructure is shown to be first deformed using (111)(alpha '') type I and < 211 >(alpha '') type II reorientation twinning. Plastic deformation occurs further by plastic twinning with a new {130}< 310 >(alpha '') twinning system. Maximum lattice deformation calculation is a relevant parameter to predict the variant of martensite that is favored during the reorientation process. Conversely, Schmid factor analysis can be used to predict the selection of {130}< 310 >(alpha '') twinning variants during deformation. Analogy between {130)< 310 >(alpha '') and (332)< 113 >(beta) twinning systems is highlighted. (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：94 / 103
页数：10
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