Effect of thermal exposure on the microstructure and hardness of a γ-TiAl alloy

被引：0
|
作者：
Moskal, G [1 ]
Rodak, K [1 ]
机构：
[1] Silesian Tech Univ, Dept Mat Sci, PL-40019 Katowice, Poland
来源：
APPLIED CRYSTALLIGRAPHY | 2004年
关键词：
D O I：
10.1142/9789812702913_0043
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
The aim of the present study is to determine the effects of long-term exposure, up 1380h to a temperature of the range 800 degrees C-950 degrees C in air, on the stability of microstructure and properties of TiAl alloy. The evolution of microstructure after long-term annealing has been investigated for a Ti48Al2Cr2Nb alloy. Long-term annealing was performed in the range 23-1380h at 800 degrees C-950 degrees C. The alloys annealed at 800 degrees C did not show much change, whereas prolonged annealing at 900 degrees C and 950 degrees C produced significant fragmentation of alpha(2) lamellae and formation of gamma grains.
引用
收藏
页码：229 / 232
页数：4
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