A nano-scale instability in the β phase of dilute Ti-Mo alloys

被引：74

作者：

Zheng, Yufeng ^{[1
]}

Banerjee, Dipankar ^{[2
]}

Fraser, Hamish L. ^{[1
]}

机构：

[1] Ohio State Univ, Dept Mat Sci & Engn, Ctr Accelerated Maturat Mat, 1305 Kinnear Rd, Columbus, OH 43212 USA

[2] Indian Inst Sci, Dept Mat Engn, CV Raman Ave, Bengaluru 560012, Karnataka, India

来源：

SCRIPTA MATERIALIA | 2016年 / 116卷

基金：

美国国家科学基金会;

关键词：

Titanium alloys; Phase transformations; High-resolution electron microscopy; Nano-scale instability; O ' phase; ZR-O ALLOYS; OMEGA-PHASE; ALPHA-PHASE; TRANSFORMATION; PRECIPITATION; STABILITY; BEHAVIOR;

D O I：

10.1016/j.scriptamat.2016.01.044

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A nano-scale instability in the beta phase resulting in the formation of the disordered orthorhombic O' phase has been discovered in a fairly dilute binary Ti-Mo alloy, using selected area electron diffraction and high resolution scanning transmission electron microscopy. The O' phase informed in the alloy when the Mo content exceeds a critical value. The instability occurs in beta-solutionized samples that have been quenched to room temperature and is found to co-exist with athermal omega to phase. Interestingly, this nano-scale instability, involving the {110}<1<(1)over bar>0> soft-phonon shuffle, occurs in the beta phase without deliberate additions of either interstitial or substitutional solutes. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：131 / 134

页数：4

共 21 条

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