Phase equilibria and microstructure evolution of Al-Mo-Ti ternary alloys

被引：14
|
作者：
Nino, R [1 ]
Fujinaka, J [1 ]
Shimamura, H [1 ]
Miura, S [1 ]
Mohri, T [1 ]
机构：
[1] Hokkaido Univ, Grad Sch Engn, Div Mat Sci & Engn, Kita Ku, Sapporo, Hokkaido 0608628, Japan
来源：
INTERMETALLICS | 2003年 / 11卷 / 06期
关键词：
aluminides; miscellaneous; phase diagram; microstructure;
D O I：
10.1016/S0966-9795(03)00049-9
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Phase equilibria in Ti-lean part of the Al-Mo-Ti ternary system is investigated to understand the microstructure evolution of near-equi-atomic MoAl alloys containing Ti up to 17 at.%. A partial reaction scheme is proposed based on experimental study. A high temperature ternary A2(bcc)-beta phase with Ti concentrations ranging from 13 to 17 at.% decomposes into A15 Mo3Al-D0(22) Al3Ti two-phase lamellar structure in a manner similar with a eutectoid reaction through a continuous cooling. The decomposition kinetics of the high temperature A2 phase is suppressed by adding Ti. Fine equi-axed two-phase structure is also obtained by an isothermal aging of a retained high temperature A2 phase. (C) 2003 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：611 / 623
页数：13
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