Alpha phase precipitation from phase-separated beta phase in a model Ti-Mo-Al alloy studied by direct coupling of transmission electron microscopy and atom probe tomography

被引：36
作者：
Devaraj, Arun [1 ,2 ,3 ]
Nag, Soumya [2 ,3 ]
Banerjee, Rajarshi [2 ,3 ]
机构：
[1] Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA
[2] Univ N Texas, Ctr Adv Res & Technol, Denton, TX 76203 USA
[3] Univ N Texas, Dept Mat Sci & Engn, Denton, TX 76203 USA
来源：
SCRIPTA MATERIALIA | 2013年 / 69卷 / 07期
基金：
美国国家科学基金会;
关键词：
Three-dimensional atom probe (3DAP); Atom probe tomography; Phase transformations; Titanium alloys; Transmission electron microscopy (TEM); TITANIUM-MOLYBDENUM ALLOYS;
D O I：
10.1016/j.scriptamat.2013.06.011
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Nucleation and growth of alpha precipitates during low-temperature annealing of Ti-10 at.% Mo-10 at.% Al alloy was investigated using direct coupling of transmission electron microscopy and atom probe tomography. The initial stages of annealing at 400 degrees C showed structurally well-defined alpha precipitates that were depleted in Mo as well as Al, and were confined within the Ti-rich beta phase separated pockets. The Al-enriched alpha phase was only observed after further annealing at 600 degrees C. (C) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：513 / 516
页数：4
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