摘要
测定了定向凝固Ｎｉ３Ａｌ基合金ＩＣ６在９５０～１１００℃范围内的蠕变曲线、应力指数和蠕变激活能，运用ＳＥＭ和ＴＥＭ技术分析了蠕变过程中合金微观结构的变化，探讨了γ筏排组织的形成机理及其对位错运动的阻碍作用。
The creep curves,stress exponent and activation energy of creep of a DS casting Ni3Al base alloy IC6 in the temperature range of 950～1100℃ have been calculated in this paper.The microstructure change during creep has been examined with SEM and TEM techniques,the forming mechanism of γ raft structure during creep has been discussed.It has been found that the γ raft structure inhibits dislocation movement effectively.
出处
《材料工程》
EI
CAS
CSCD
北大核心
1996年第3期6-8,共3页
Journal of Materials Engineering
关键词
微观结构
蠕变
镍基合金
高温
s: microstructure, creep
Ni_3Al base alloy
