Synergistic effects of Mo and in-situ TiC on the microstructure and wear resistance of AlCoCrFeNi high entropy alloy fabricated by laser cladding

• Published in: Tribology international Vol. 188; p. 108827
• Main Authors: Zhao, Wei, Yu, Kedong, Ma, Qi, Song, Chenxiao, Xiao, Guangchun, Zhang, Hui, Lv, Yuexia, Guo, Ning, Li, Zhen
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.10.2023
• Subjects: High entropy alloy; Laser cladding; Synergistic effect; Wear resistance; Wear resistance; Synergistic effect; Laser cladding; High entropy alloy
• ISSN: 0301-679X; 1879-2464
• DOI: 10.1016/j.triboint.2023.108827

The AlCoCrFeNi high entropy alloy coatings reinforced by the high melting point element Mo and in-situ TiC were fabricated by using laser cladding. The BCC phase existed in all the coatings. When Mo and in-situ TiC were doped individually, the existence of the σ phase and dendritic TiC particles were detected, respectively. However, on simultaneous doping of Mo and in-situ TiC, no σ phase was observed, and flower-like TiC particles were detected. In addition, the simultaneous doping of Mo and in-situ TiC resulted in a wear resistance of 3.14 and 2.6 times greater than that in case of individual doping of Mo and in-situ TiC, respectively, indicating the manifestation of a synergistic effect in improving wear resistance.