Effect of Post-irradiation Annealing on Microstructure Evolution and Hardening in GH3535 Alloy Irradiated by Au Ions  

作　　者：Cunyun Hu Hefei Huang Zhenbo Zhu Awen Liu Yan Li 

机构地区：[1]School of Physical Science and Technology,ShanghaiTech University,Shanghai 201210,China [2]Shanghai Instituteof AppliedPhysics,ChineseAcademy of Sciences,Shanghai 201800,China [3]School of Nuclear Scienceand Technology,University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Acta Metallurgica Sinica(English Letters)》2022年第11期1903-1911,共9页金属学报（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Grant Nos.12022515 and 11975304);the Youth Innovation Promotion Association,Chinese Academy of Sciences(Grant No.Y202063)。

摘　　要：The Au ion-irradiation experiments of GH3535 alloy,a candidate alloy structural material for molten salt reactor,was carried out in this study.Herein,isochronous annealing experiments were conducted from 200 to 850 ℃ to clarify the evolution behavior of damage defects with increasing temperature.The coarsening of dislocation loops and formation and dissolution of precipitates with increasing annealing temperature were characterized by transmission electron microscopy.Nanoindentation was performed to measure the variation of hardness caused by irradiation.Additionally,the relationship between irradiation hardening and microstructure evolution was established.This study lays a foundation for the evaluation of irradiation damage properties of GH3535 alloy at different annealing temperatures.

关 键 词：Nickel-based alloy Irradiation ANNEALING Dislocation loop PRECIPITATE 

分 类 号：TG132.3[一般工业技术—材料科学与工程] TG156.2[金属学及工艺—合金]