Twinning system selection in a metastable β-titanium alloy by Schmid factor analysis

SCRIPTA MATERIALIA

卷:64

Article

Bertrand, E.¹  Castany, P.¹  Peron, I.¹  Gloriant, T.¹ 

[1] INSA Rennes, CNRS, UMR Sci Chim Rennes 6226, F-35708 Rennes 7, France

关键词: Titanium alloy;    Electron backscattering diffraction;    Twinning;    Schmid factor;   

DOI  :  10.1016/j.scriptamat.2011.02.033

来源: Elsevier

【 摘 要 】

Electron backscattering diffraction and Schmid factor analysis were used to study the twinning variant selection in a Ti-25Ta-24Nb (mass%) metastable beta-titanium alloy. The two twinning systems {1 1 2}< 1 1 1 > and {3 3 2}< 1 1 3 > were observed. For each system the Schmid factor was shown to be a relevant parameter to determine the activated variant. Moreover, selection between the two twinning systems depends on the crystallographic orientation of the grain with respect to the tensile direction. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

Free