镍基单晶高温合金定向粗化行为的取向依赖性 Ⅰγ’形态的SEM观察

ORIENTATION DEPENDENCE OF DIRECTIONAL COARSENING BEHAVIOR IN A NICKEL-BASE SINGLE CRYSTAL SUPERALLOY I SEM Observation of γ' Precipitate Morphology

利用ＳＥＭ对镍基单晶高温合金中γ’颗粒定向粗化及其取向依赖性进行了观察，结果显示， γ’颗粒形态依赖于应力轴取向，而粗化方向均为〈１００〉．

The directional coarsening of γ' precipitates and its orientation dependence were observed by SEM, and the results showed that the γ' precipitate morphology depends on stress axis, while the coarsening directions of γ' precipitate are along (100} for various stress axis.