Superplasticity of titanium aluminides with a submicrocrystalline structure

被引：0
|
作者：
Imaev, RM [1 ]
Imaev, VM [1 ]
Salishchev, GA [1 ]
机构：
[1] Russian Acad Sci, Inst Problems Met Superplast, Ufa 450001, Russia
来源：
PHYSICS OF METALS AND METALLOGRAPHY | 2005年 / 100卷 / 03期
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D O I：
暂无
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The paper gives a review of the results of studying superplasticity of intermetallic compounds with high ordering energies, such as TiAl (L1(0) superlattice) and Ti3Al (D0(19)), and a number of related alloys in which submicron-sized grains (d < 1 mu m) were produced by multistage hot deformation. Because of such a small grain size, the temperature range of superplasticity was T = 600-900 degrees C (0.47-0.66T(m)), which is 200-400 K below the analogous interval for these alloys with grain sizes reaching several microns. The effect of the grain size, alloys composition, and superlattice type on the superplasticity of titanium aluminides is considered and the possible mechanisms of superplastic deformation in these materials are discussed.
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页码：307 / 317
页数：11
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