Hardening of an ODS Ferritic Steel after Helium Implantation and Thermal Annealing  

He离子注入ODS钢中硬化效应研究

作　　者：Su Changhao Zhang Chonghong Yang Yitao Ding Zhaonan Chen Yuguang and Akihiko Kimura 

机构地区：[1]Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China [2]University of Chinese Academy of Science,Beijing 100049,China [3]Institute of Advanced Energy,Kyoto University,Uji,Kyoto 611-0011,Japan

出　　处：《IMP & HIRFL Annual Report》2017年第1期125-127,共3页中国科学院近代物理研究所和兰州重离子研究装置年报（英文版）

摘　　要：In advanced nuclear reactors,helium can inevitably be produced via(n,)reaction and may precipitate into nano-scale helium bubbles in materials,and can causes degradation of material properties.In the present study,effects of helium bubbles formation in an oxide dispersion strengthened(ODS)steel is studied.Specimens of an ODS ferritic steel(15Cr-4Al-0.6Zr-0.1Ti)were implanted with mutiple-energy He ions at room temperature at the terminal of the 320 kV High-voltage Platform in IMP,to create a damage plateau of 0.4 dpa for average(corresponding to an He concentration of about 7000 appm)from the near surface to a depth about 1m.The specimen was subsequently thermally annealed at 800℃for 1 h in vacuum so that simple defects formed in the as-implanted state underwent significant recombination,meanwhile helium bubbles at nano-scale were formed.

关 键 词：STEEL STRENGTHENED annealed 

分 类 号：TG1[金属学及工艺—金属学]