Zobrazit v EDS

Micro-structures and dry-sliding friction/wear performances of novel AlCrFeNiMo0.5Bx high entropy alloy-ceramic composite coatings

Uloženo v:
Podrobná bibliografie
Název: Micro-structures and dry-sliding friction/wear performances of novel AlCrFeNiMo0.5Bx high entropy alloy-ceramic composite coatings
Autoři: Hui Liang, Jingzhuo Zhang, Jinxin Hou, Jingchang Sun, Jianhong Liu, Jiawen Liu, Xu Han, Jiani Tan, Li Jiang, Xiaocong Li, Zhiqiang Cao
Zdroj: Journal of Materials Research and Technology, Vol 38, Iss, Pp 1014-1025 (2025)
Informace o vydavateli: Elsevier BV, 2025.
Rok vydání: 2025
Témata: Mining engineering. Metallurgy, Friction/wear performances, TN1-997, Composite coatings, High-entropy alloy, Microstructural characteristics
Popis: The novel AlCrFeNiMo0.5Bx high entropy alloy-ceramic composite coatings with high forming quality were developed and successfully fabricated by laser cladding technology. With the addition of element B, the discontinuous white boride phase precipitated along the grain boundaries of the coatings, presenting a typical dendritic morphology, and the phase composition changed from “BCC1+BCC2” to “BCC1+BCC2+(Cr, Mo)2B”. The hardness of the AlCrFeNiMo0.5Bx coatings was all higher than that of the Q235 steel substrate, and showed a trend of first increasing and then decreasing with the increase of B content. Especially when x = 0.5, the hardness of the AlCrFeNiMo0.5B0.5 coating reached its maximum of 723 HV0.1, which was more than 5 times the hardness of the Q235 steel substrate. Correspondingly, the wear resistance also showed a similar trend with the increase of B content, that was, the AlCrFeNiMo0.5B0.5 coating had the lowest friction coefficient (0.51) and wear rate (1.01 × 10−5 mm3/(N · m)), exhibiting the best wear resistance, and demonstrating outstanding advantages in the field of dry sliding wear-resistant protective coatings.
Druh dokumentu: Article
Jazyk: English
ISSN: 2238-7854
DOI: 10.1016/j.jmrt.2025.07.285
Přístupová URL adresa: https://doaj.org/article/209ff4b70ae64e8aa32fc3a17d804215
Rights: CC BY NC ND
Přístupové číslo: edsair.doi.dedup.....afe91886f980ea9e96d8292f060634b5
Databáze: OpenAIRE
Popis
Abstrakt:The novel AlCrFeNiMo0.5Bx high entropy alloy-ceramic composite coatings with high forming quality were developed and successfully fabricated by laser cladding technology. With the addition of element B, the discontinuous white boride phase precipitated along the grain boundaries of the coatings, presenting a typical dendritic morphology, and the phase composition changed from “BCC1+BCC2” to “BCC1+BCC2+(Cr, Mo)2B”. The hardness of the AlCrFeNiMo0.5Bx coatings was all higher than that of the Q235 steel substrate, and showed a trend of first increasing and then decreasing with the increase of B content. Especially when x = 0.5, the hardness of the AlCrFeNiMo0.5B0.5 coating reached its maximum of 723 HV0.1, which was more than 5 times the hardness of the Q235 steel substrate. Correspondingly, the wear resistance also showed a similar trend with the increase of B content, that was, the AlCrFeNiMo0.5B0.5 coating had the lowest friction coefficient (0.51) and wear rate (1.01 × 10−5 mm3/(N · m)), exhibiting the best wear resistance, and demonstrating outstanding advantages in the field of dry sliding wear-resistant protective coatings.
ISSN:22387854
DOI:10.1016/j.jmrt.2025.07.285