Effect of Fe and Mo additions on microstructure and mechanical properties of TiAl intermetallics

被引：39
|
作者：
Qiu Cong-zhang [1 ]
Liu Yong [1 ]
Huang Lan [1 ]
Zhang Wei [1 ]
Liu Bin [1 ]
Lu Bin [1 ]
机构：
[1] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Hunan, Peoples R China
来源：
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2012年 / 22卷 / 03期
关键词：
TiAl intermetallics; Fe; Mo; beta phase; grain refinement; BETA-PHASE; SUPERPLASTIC BEHAVIOR; ALLOY; EVOLUTION; NB;
D O I：
10.1016/S1003-6326(11)61208-9
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The ductility of TiAl intermetallics can be improved through stabilizing the ductile beta phase. New beta-stabilized Ti-45Al-xFe-yMo (x, y = 1, 2, 3, 4) alloys were designed through adding the beta stabilizing elements Fe and Mo. The microstructural evolution and deformation behavior of the Ti-45Al-xFe-yMo alloys were investigated. The results show that the amount of beta(B2) phase is increased with the increase of alloying elements. Mo shows a higher capability for stabilizing the beta phase than Fe. In the optimized Ti-45Al-3Fe-2Mo alloy, the grains are significantly refined to about 12 mu m, and this alloy shows a very good hot ductility at the elevated temperature.
引用
收藏
页码：521 / 527
页数：7
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