Effect of welding process on the microstructure and high temperature mechanical properties of RAFM steel

Minyu He; Wenguang Li; Jin Liu; Weibin Zhou; Delin Chu; Wei Lu; Weihua Wang

doi:10.1117/12.2674029

9 March 2023 Effect of welding process on the microstructure and high temperature mechanical properties of RAFM steel

Minyu He, Wenguang Li, Jin Liu, Weibin Zhou, Delin Chu, Wei Lu, Weihua Wang

Proceedings Volume 12600, International Conference on Optoelectronic Materials and Devices (ICOMD 2022); 126001T (2023) https://doi.org/10.1117/12.2674029
Event: 2022 International Conference on Optoelectronic Materials and Devices, 2022, Chongqing, China

Abstract

Reduced activation ferritic/martensite steel (RAFM) for fusion reactor was butt welded by laser welding (LBW) and tungsten inert gas (TIG) welding. The microstructures, hardness and high temperature (600℃)transient tensile properties of the welded joints were observed and analyzed. The results show that the microstructures of the two welding processes are coarse martensite, no hardening and softening of heat-affected zone occur, and the difference of tensile strength is not obvious at each temperature. In conclusion, TIG welding could provide a smaller necking area and plastic deformation, while laser welding is a more suitable choice for 3-5mm RAFM steel.

Citation Download Citation

Minyu He, Wenguang Li, Jin Liu, Weibin Zhou, Delin Chu, Wei Lu, and Weihua Wang "Effect of welding process on the microstructure and high temperature mechanical properties of RAFM steel", Proc. SPIE 12600, International Conference on Optoelectronic Materials and Devices (ICOMD 2022), 126001T (9 March 2023); https://doi.org/10.1117/12.2674029

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