Effect of yttrium and erbium on the microstructure and mechanical properties of Ti-Al-Nb alloys

被引：23
作者：
Ke, Yubin [1 ,2 ]
Duan, Huiping [1 ]
Sun, Yanran [1 ]
机构：
[1] Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China
[2] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2010年 / 528卷 / 01期
关键词：
Ti-Al-Nb; Rare earth; Microstructure; Mechanical property; UNDERCOOLED MELTS; PHASE; BEHAVIOR; SYSTEM; CAST;
D O I：
10.1016/j.msea.2010.09.011
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The effect of yttrium and erbium on the microstructure and mechanical property of Ti-16A1-27Nb alloy was investigated in this paper. Experimental results showed that the phase constituent had not been changed by Y or Er additive and all the alloys were simply composed of beta, O and alpha phases. However, the grain size of the alloy can be sharply refined by Y or Er element. Compression test showed that the mechanical property of the alloy cannot be obviously increased by Y additive but can be sharply improved by Er additive because of the presence of fine (AlTiNb)(2)Er(3) precipitates in the beta phase. (C) 2010 Elsevier B.V. All rights reserved.
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页码：220 / 225
页数：6
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