Reversion of a Parent {130}⟨310⟩α" Martensitic Twinning System at the Origin of {332}⟨113⟩β Twins Observed in Metastable β Titanium Alloys

被引：141

作者：

Castany, P. ^{[1
]}

Yang, Y. ^{[1
]}

Bertrand, E. ^{[2
]}

Gloriant, T. ^{[1
]}

机构：

[1] INSA Rennes, UMR 6226, CNRS, Inst Sci Chim Rennes Chim Met, 20 Ave Buttes Coesmes, F-35708 Rennes, France

[2] Univ Nantes, CNRS, Inst Mat Jean Rouxel IMN, Rue Christian Pauc, F-44306 Nantes, France

来源：

PHYSICAL REVIEW LETTERS | 2016年 / 117卷 / 24期

关键词：

OMEGA-PHASE-TRANSFORMATION; X-RAY-DIFFRACTION; MECHANICAL-PROPERTIES; YOUNGS MODULUS; GUM METAL; TI-ALLOYS; DEFORMATION; SUPERELASTICITY; TI-24NB-0.5N; STABILITY;

D O I：

10.1103/PhysRevLett.117.245501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In bcc metastable beta titanium alloys, and particularly in superelastic alloys, a unique {332}< 113 > twinning system occurs during plastic deformation. However, in situ synchrotron x-ray diffraction during a tensile test shows that the beta phase totally transforms into alpha '' martensite under stress in a Ti-27Nb (at. %) lalloy. {332}< 113 >(beta) twins are thus not formed directly in the beta phase but are the result of the reversion of {130}< 310 >(alpha '') parent twins occurring in martensite under stress. The formation of an interfacial twin boundary. phase is also observed to accommodate strains induced during the phase reversion.

引用

页数：6

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