High-strain induced reverse martensitic transformation in an ultrafine-grained Ti-Nb-Ta-Zr alloy

被引：6

作者：

Li, Zhiming ^{[1
,5
]}

Zheng, Baolong ^{[1
,2
]}

Kurmanaeva, Lilia ^{[1
]}

Zhou, Yizhang ^{[1
,2
]}

Valiev, Ruslan Z. ^{[3
,4
]}

Lavernia, Enrique J. ^{[1
,2
]}

机构：

[1] Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA

[2] Univ Calif Irvine, Dept Chem Engn & Mat Sci, Irvine, CA 92697 USA

[3] Ufa State Aviat Tech Univ, Inst Phys Adv Mat, Ufa, Russia

[4] St Petersburg State Univ, Lab Mech Bulk Nanostruct Mat, St Petersburg, Russia

[5] Max Planck Inst Eisenforsch GmbH, Dusseldorf, Germany

来源：

PHILOSOPHICAL MAGAZINE LETTERS | 2016年 / 96卷 / 05期

基金：

美国国家科学基金会;

关键词：

Strain; martensitic transformations; titanium alloys; ultrafine-grained materials; equal channel angular pressing (ECAP); TITANIUM; BEHAVIOR; DEFORMATION; TEMPERATURE;

D O I：

10.1080/09500839.2016.1189098

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report on a novel phenomenon, that is a high-strain-induced reverse martensitic transformation in an ultrafine-grained Ti-36Nb-2Ta-3Zr (wt.%) alloy processed by equal channel angular pressing (ECAP) at room temperature. Our results show that a martensitic transformation from body-centred cubic matrix to orthorhombic martensite occurs under low-strain ECAP conditions and that a large portion (similar to 34%) of martensite transforms into a matrix phase (i.e. reverse martensitic transformation) with increasing ECAP strain to a high value of 4 (i.e. 6 passes) with a corresponding reduction in the -lath thickness and a refinement of grain size in the matrix phase.

引用

页码：189 / 195

页数：7

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