Helium Bubble Growth in He^(+) Ions Implanted 304L Stainless Steel Processed by Laser Powder Bed Fusion During Post-Irradiation Annealing at 600℃

作     者：Hui Liu Shiling Min Menglei Jiang Fuzhong Chu Ying Li Zhuoer Chen Kai Zhang Juan Hou Aijun Huang Hui Liu;Shiling Min;Menglei Jiang;Fuzhong Chu;Ying Li;Zhuoer Chen;Kai Zhang;Juan Hou;Aijun Huang

作者机构：School of Materials Science and ChemistryUniversity of Shanghai for Science and TechnologyShanghai200093China Department of Industrial and Materials ScienceChalmers University of Technology41326GothenburgSweden Monash Centre for Additive Manufacturing(MCAM)Monash UniversityNotting HillVIC3168Australia State Key Laboratory of Nuclear Power Safety Monitoring Technology and EquipmentChina Nuclear Power Engineering Co.Ltd.Shenzhen518172China 

出 版 物：《Acta Metallurgica Sinica(English Letters)》 (金属学报（英文版）)

年 卷 期：2022年第35卷第9期

页      面：1509-1518页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：sponsored by the National Natural Science Foundation of China(Grant No.52073176) 

主　　题：Laser powder bed fusion Stainless steel Helium bubble growth Irradiation tolerance Nano oxide inclusions 

摘      要：The abundancy of defect sinks in the microstructure of laser powder bed fusion(LPBF) processed austenitic stainless steels was found to be beneficial for helium *** the current study,the influence of the novel microstructure in LPBF processed 304 L on the helium bubble growth behaviour was investigated using transmission electron microscopy in samples implanted with He^(+) ion and post-irradiation annealing treated at 600℃ for 1 *** variants of LPBF processed 304 L samples were used,one in as-built condition and the other *** comparison between the two samples indicated that the helium bubble growth was inhibited and remained stable in the as-built sample but coarsened significantly in the solution-annealed *** sub-grain boundaries and oxide nano-inclusions acted as defect sinks to trap helium atoms and inhibited the growth of helium bubble in the as-built sample under the post-irradiation annealing conditions used.