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利用TEM对[001]取向单晶镍基合金高温压缩蠕变行为的研究表明:γ’相沿应力轴方向形成筏状后,形变机制是<110>超位错切入筏状γ’相,(1/3)<112>超Shockley不全位错来自于[101]超位错的分解领先和拖曳的超Shockley不全位错形成的位错环阻碍了[101]超位错的继续扩展,是压缩蠕变应变量小的原因之一
The TEM study of creep behavior of [001] -oriented single crystal nickel-based alloys at high temperature shows that the deformation mechanism of the γ ’phase along the stress axis is the raft γ <1> / 3) <112> Super Shockley Incomplete Dislocation [101] Decomposition of Super-Dislocations The leading and trailing super Shockley dislocation dislocation loops prevent the continuation of super-dislocations [101] One of the reasons for the small amount of strain