IN625合金的动态应变时效效应  

Dynamic Strain Aging Effect of In625 Alloy

作　　者：龙老虎 高振桓[1] 张波[1] 巩秀芳[1] 范华[1] 

机构地区：[1]东方汽轮机有限公司长寿命高温材料国家重点实验室,四川德阳618000

出　　处：《东方汽轮机》2017年第4期60-65,共6页Dongfang Turbine

摘　　要：对IN625合金拉伸和低周疲劳实验过程中的动态时效效应进行了观察和分析,发现该合金低周疲劳过程中的动态应变时效效应随着温度和应变幅的增加而加强,同时随着循环周次增加,该效应逐渐减弱。通过TEM观察发现,该合金室温低周疲劳的位错运动方式为多滑移,630℃时为复杂的平行位错结构。The dynamic strain aging effect on tensile and low cycle fatigue test for IN625 has been observed and analyzed. It is found that the dynamic strain aging effect on the low cycle fatigue of the alloy is strengthened with the increase of temperature and the strain amplitude, at the same time, the effect gradually is weakened with the increase of cyclic times. According to the TEM analysis, the dislocation moving manner of the low cycle fatigue specimen is multiple-slip at room temperature, the dislocation is complex parallel dislocation structure at 630℃.

关 键 词：动态应变时效效应(DSA) IN625 位错结构 

分 类 号：TG113[金属学及工艺—物理冶金]