Microstructure and mechanical properties of laser-induction hybrid welding 2205 duplex stainless steel

Song Gao; Ping Jiang; Shaoning Geng; Liangyuan Ren; Chu Han; Yan Li; Yilin Wang; Chen Yue

doi:10.1117/12.2602269

24 June 2021 Microstructure and mechanical properties of laser-induction hybrid welding 2205 duplex stainless steel

Song Gao, Ping Jiang, Shaoning Geng, Liangyuan Ren, Chu Han, Yan Li, Yilin Wang, Chen Yue

Proceedings Volume 11885, International Conference on Laser, Optics and Optoelectronic Technology (LOPET 2021); 1188503 (2021) https://doi.org/10.1117/12.2602269
Event: 2021 International Conference on Laser, Optics and Optoelectronic Technology (LOPET 2021), 2021, Xi'an, China

Abstract

In this paper, the differences of microstructure and mechanical properties of 2205 duplex stainless steel between preheating laser-induction hybrid welding (LIHW) and post-heating LIHW were compared by the optical microscope, nanoindentation, Vickers hardness and tensile machines. The results of the nano-indentation experiment show that the elastic modulus and hardness of ferrite are 42% and 64% larger than that of austenite, respectively. With the increase of LIHW heating power, the austenite proportion increases distinctly. Furthermore, the increase of the austenite results in the decrease of hardness and ultimate tensile stress. By quantifying the microstructure and mechanical properties, pre-heating LIHW exhibits greater superiority than post-heating LIHW with a heating power of 49.1 kW, laser power of 3 kW and welding speed of 30 mm/s.

Citation Download Citation

Song Gao, Ping Jiang, Shaoning Geng, Liangyuan Ren, Chu Han, Yan Li, Yilin Wang, and Chen Yue "Microstructure and mechanical properties of laser-induction hybrid welding 2205 duplex stainless steel", Proc. SPIE 11885, International Conference on Laser, Optics and Optoelectronic Technology (LOPET 2021), 1188503 (24 June 2021); https://doi.org/10.1117/12.2602269

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