Effect of LaB6 addition on mechanical properties and irradiation resistance of 316L stainless steels processed by selective laser melting

Dexin Xu; Feida Chen; Xiaobin Tang; Lida Shen; Jiabin Jiang; Zhangjie Sun; Songyuan Li; Zhenlong Geng

International Journal of Advanced Nuclear Reactor Design and Technology (Jan 2021)

Effect of LaB6 addition on mechanical properties and irradiation resistance of 316L stainless steels processed by selective laser melting

Dexin Xu,
Feida Chen,
Xiaobin Tang,
Lida Shen,
Jiabin Jiang,
Zhangjie Sun,
Songyuan Li,
Zhenlong Geng

Affiliations

Dexin Xu: Department of Nuclear Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, China
Feida Chen: Department of Nuclear Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, China; Jiangsu Engineering Laboratory of Nuclear Energy Equipment Materials, Nanjing, 211106, China; Corresponding author. Department of Nuclear Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, China.
Xiaobin Tang: Department of Nuclear Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, China; Key Laboratory of Nuclear Technology Application and Radiation Protection in Astronautics, Nanjing University of Aeronautics and Astronautics, Ministry of Industry and Information Technology, Nanjing, 211106, China
Lida Shen: College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Yu Dao Street, Nanjing, 210016, China
Jiabin Jiang: College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Yu Dao Street, Nanjing, 210016, China
Zhangjie Sun: Department of Nuclear Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, China
Songyuan Li: Department of Nuclear Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, China
Zhenlong Geng: Department of Nuclear Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, China

Journal volume & issue: Vol. 3
pp. 74 – 79

Abstract

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The 316L stainless steels (SS) have become one of the most common structural materials in nuclear system applications due to their excellent physicochemical performance. Selective laser melting (SLM) preparation, mechanical properties, and irradiation resistance of 316L SS reinforced by second-phase particles have aroused extensive attention. Here, the mechanical properties of 316L SS with different LaB6 contents processed by SLM before irradiation and the irradiation-induced swelling after 50 keV He+ irradiation at room temperature were investigated. Results showed that the microstructure was refined with the LaB6 addition, and the size of 316L SS subgrains decreased with the increase of LaB6. LaB6 reinforced 316L SS (316L-LaB6) exhibited higher hardness and yield strength compared with 316L SS without LaB6 addition. After 50 keV He+ irradiation, the irradiation-induced swelling rate of 316L-LaB6 was lower than that of 316L SS without LaB6 addition, indicating that LaB6 improved the irradiation resistance of 316L SS. Consequently, our study indicated the potential of using 316L-LaB6 as irradiation-resistant material.

Published in International Journal of Advanced Nuclear Reactor Design and Technology

ISSN: 2468-6050 (Online)
Publisher: KeAi Communications Co., Ltd.
Country of publisher: China
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Nuclear engineering. Atomic power
Website: https://www.keaipublishing.com/en/journals/international-journal-of-advanced-nuclear-reactor-design-and-technology/

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