FeCrAl-ODS钢的辐照位错环演变及其辐照硬化效应
Study on the evolution of dislocation loops and radiation hardening effect in FeCrAl ODS steel
龙弟均 1徐海波 2孙永铎 2吕俊男2
作者信息
- 1. 中国核动力研究设计院,四川成都 610041
- 2. 中国核工业集团有限公司,北京 100822
- 折叠
摘要
为了研究FeCrAl-ODS钢的抗辐照性能,采用原位离子辐照方法研究了 FeCrAl-ODS钢辐照过程中位错环的演变,采用纳米硬度表征了 FeCrAl-ODS钢的辐照硬化效应.研究结果表明:经离子辐照后,FeCrAl-ODS钢中产生了＜100＞和1/2＜111＞位错环,位错环的平均直径和位错环数密度都随辐照损伤剂量的增大而增大.随辐照温度的升高,位错环的生长速率增大而数密度有所降低.经10dpa离子辐照后,FeCrAl-ODS钢的辐照硬化值仅为0.35 GPa.相比FeCrAl合金,FeCrAl-ODS钢具有较好的抗辐照硬化性能.
Abstract
In order to study the radiation resistance of FeCrAl ODS steel,the evolution of dislocation loops in Fe-CrAl ODS steel under irradiation was studied using in-situ ion irradiation method,and the irradiation hardening effect of FeCrAl ODS steel was characterized using nanohardness.The research results indicate that after ion irra-diation,FeCrAl ODS steel produces＜100＞and 1/2＜111＞dislocation loops,and the average diameter and density of dislocation loops increase with the increase of irradiation damage dose.As the irradiation temperature increas-es,the growth rate of dislocation loops increases while the number density decreases.After 10 dpa ion irradia-tion,the irradiation hardening value of FeCrAl ODS steel is only 0.35 GPa,indicating good resistance to irradia-tion hardening.
关键词
FeCrAl-ODS钢/离子辐照/位错环/纳米硬度/辐照硬化Key words
FeCrAl ODS steel/ion irradiation/dislocation loops/nanohardness/irradiation hardening引用本文复制引用
基金项目
中国核工业集团"青年英才"计划(NPIC-K301007033)
出版年
2024
NETL
NSTL
万方数据