Study of Helium Bubbles Growth and Hardening of Selective Laser Melting 304L Stainless Steel Under He+ Irradiation

被引：0
|
作者：
Hou J. [1 ,2 ]
Liu H. [2 ]
Chen L. [1 ]
Min S. [2 ]
Jiang M. [2 ]
机构：
[1] State Key Laboratory of Nuclear Power Safety Technology and Equipment, China Nuclear Power Engineering Co.,Ltd., Guangdong, Shenzhen
[2] School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai
来源：
Cailiao Daobao/Materials Reports | 2024年 / 38卷 / 02期
基金：
中国国家自然科学基金;
关键词：
304L stainless steel; He[!sup]+[!/sup] irradiation; helium bubble growth; irradiation hardening; selective laser melting;
D O I：
10.11896/cldb.22050298
中图分类号：
学科分类号：
摘要：
The as-built and solution-annealed selective laser melting 304L stainless steel (SLM 304L SS)were implanted with 350 keV He+ at 300 ℃ to fluxes of 5×1016 ions / cm2 and then annealed at 600 ℃ for 1 h. The helium bubble growth and irradiation hardening in SLM 304L SS were investigated by TEM,positron annihilation,and nanoindentation measurements. Compared those between two variants of SLM 304L SS,one in as-built condition and the other solution-annealed,the results indicates that the as-built sample of the SLM 304L SS exhibited the outstanding resistance to helium bubble growth in the post-irradiation annealed at 600 ℃. Because abundant defect sinks,including high dislocation densities and interfaces between nano-inclusions and the matrix,can effectively inhibit the helium bubble coarsening. Additionally,the hardening rate of the as-built sample is 19% whereas that of the solution-annealed sample is 51% after annealing. According to the calculation of Orowan model,the difference of helium bubble coarsening is the main reason for the different hardening rate of SLM 304L stainless steel in two states. © 2024 Cailiao Daobaoshe/ Materials Review. All rights reserved.
引用
收藏
相关论文
共 26 条
  • [1] Sjz A, Gsw B., Acta Materialia, 61, 3, (2013)
  • [2] Hill David J., Nature Materials, 7, 9, (2008)
  • [3] Baldev R, Mudali U K, Vijayalakshmi M, Et al., Advanced Materials Research, 794, (2013)
  • [4] Zhao F Y, He X M, Wang X J, Et al., Machine Design & Research, 32, 1, (2016)
  • [5] Lu B H, Li D C., Machine Building & Automation, 4
  • [6] Hou J, Chen W, Chen Z E, Et al., Journal of Materials Science & Technology, 48, 13, (2020)
  • [7] Trinkaus H, Singh B N., Journal of Nuclear Materials, 323, 2-3, (2003)
  • [8] Allen F I, Hosemann P, Balooch M., Scripta Materialia, 178, (2020)
  • [9] Jia X L, He X F, Wu S, Et al., Materials Science Forum, 4734, 5, (2019)
  • [10] Hasegawa A, Nogami S, Imaseki K., Journal of Nuclear Science and Technology, 48, 1, (2011)
123