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 FeCrAlODS steel

作　　者：龙弟均 徐海波 孙永铎 吕俊男 LONG Dijun;XU Haibo;SUN Yongduo;LU Junnan(China National Nuclear Corporation,Beijing 100822,China;Nuclear Power Institute of China,Chengdu 610041,China)

机构地区：[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

出　　处：《粉末冶金工业》2024年第3期28-33,共6页Powder Metallurgy Industry

基　　金：中国核工业集团“青年英才”计划(NPIC-K301007033)。

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10 dpa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。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,FeCrA1 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 

分 类 号：TL341[核科学技术—核技术及应用] TG142.1[一般工业技术—材料科学与工程]