Effect of laser remelting on microstructure and mechanical property of AlCoCuFeNi high entropy alloy fabricated by laser additive manufacturing

Xuyang Ye; Mina Zhang; Longjun He; Zifa Xu; Dianbo Ruan; Wenwu Zhang

doi:10.1117/12.2603159

31 August 2021 Effect of laser remelting on microstructure and mechanical property of AlCoCuFeNi high entropy alloy fabricated by laser additive manufacturing

Xuyang Ye, Mina Zhang, Longjun He, Zifa Xu, Dianbo Ruan, Wenwu Zhang

Author Affiliations +

Proceedings Volume 11907, Sixteenth National Conference on Laser Technology and Optoelectronics; 119072Q (2021) https://doi.org/10.1117/12.2603159
Event: Sixteenth National Conference on Laser Technology and Optoelectronics, 2021, Shanghai, China

Abstract

An approach of laser remelting (LR) during laser melting deposition (LMD) process was applied to improve the forming quality and mechanical properties of the AlCoCuFeNi high entropy alloys (HEAs). In particular, the effect of laser remelting on the surface morphology, phase, microstructure and hardness of the parts were investigated using LSCM, SEM, XRD and Vickers microhardness tester. The results show that both LMD and LMD+LR samples dominantly consisted of a body-centered-cubic (BCC) and face-centered cubic (FCC) solid solution phases. There are many splash particles on the surface of the LMD part, which is attributed to the serious balling effect. The analysis shows that the LR process can improve the surface quality and microhardness of the LMD HEA samples due to the elimination of balling defects (microcracks and porosity).

Citation Download Citation

Xuyang Ye, Mina Zhang, Longjun He, Zifa Xu, Dianbo Ruan, and Wenwu Zhang "Effect of laser remelting on microstructure and mechanical property of AlCoCuFeNi high entropy alloy fabricated by laser additive manufacturing", Proc. SPIE 11907, Sixteenth National Conference on Laser Technology and Optoelectronics, 119072Q (31 August 2021); https://doi.org/10.1117/12.2603159

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