Shuffle-induced modulated structure and heating-induced ordering in the metastable β-titanium alloy, Ti-5Al-5Mo-5V-3Cr

被引：29
|
作者：
Zheng, Yufeng [1 ,2 ,3 ]
Antonov, Stoichko [4 ]
Feng, Qiang [4 ]
Banerjee, Rajarshi [5 ,6 ]
Banerjee, Dipankar [7 ]
Fraser, Hamish L. [1 ,2 ]
机构：
[1] Ohio State Univ, Ctr Accelerated Maturat Mat, Columbus, OH 43212 USA
[2] Ohio State Univ, Dept Mat Sci & Engn, Columbus, OH 43212 USA
[3] Univ Nevada, Dept Chem & Mat Engn, 1664 N Virginia St, Reno, NV 89557 USA
[4] Univ Sci & Technol Beijing, Beijing Adv Innovat Ctr Mat Genome Engn, State Key Lab Adv Met & Mat, Beijing, Peoples R China
[5] Univ North Texas, Mat Res Facil, Denton, TX 76207 USA
[6] Univ North Texas, Dept Mat Sci & Engn, Denton, TX 76207 USA
[7] Indian Inst Sci, Dept Mat Engn, Bengaluru 560012, Karnataka, India
来源：
SCRIPTA MATERIALIA | 2020年 / 176卷
基金：
美国国家科学基金会; 中国博士后科学基金;
关键词：
Titanium alloys; Modulated structure; Ordering; High resolution transmission electron microscopy; Atom probe tomography; HIGH-YIELD STRENGTH; OMEGA-PHASE; NANO-SCALE; MARTENSITIC-TRANSFORMATION; DEFORMATION MECHANISMS; ALPHA''-MARTENSITE; INSTABILITIES; PRECIPITATION; BEHAVIOR; ORIGIN;
D O I：
10.1016/j.scriptamat.2019.09.027
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A nano-scaled shuffle-induced modulated structure and heating-induced ordering have been characterized in a metastable beta-titanium alloy, Ti-5Al-5Mo-5V-3Cr, and their inter-relationship was investigated through in-situ and ex-situ conventional and aberration-corrected scanning/transmission electron microscopy and atom probe tomography. The nano-scaled O' phase with a disordered orthorhombicmodulated structure formed by the {O11} < 01 <(1)over bar>>beta transverse phonon was characterized for the first time to be stable from room temperature to similar to 200 degrees C. The O '' phase with an ordered orthorhombic structure formed from the beta phase during aging above the O' phase solvus temperature, where Al segregation in nano-scaled regions led to ordering of every third {011} planes. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：7 / 11
页数：5
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