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| Microstructure evolution and tribological performance of laser-clad Al1.5Co0.5CrFeNi2(TiB)x high-entropy alloy composite coatings with in-situ synthesized complex precipitates | |
Liu, Hao1,2; Liang, Huiyue1; Peng, Guangjian3; Chen, Peijian4 ; Liu, Xinhua1; He, Xiuli5; Yu, Gang5
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| Corresponding Author | Liang, Huiyue([email protected]) |
| Source Publication | SURFACE & COATINGS TECHNOLOGY
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| 2025-03-01 | |
| Volume | 499Pages:17 |
| ISSN | 0257-8972 |
| Abstract | High-entropy alloy based composite Al1.5Co0.5CrFeNi2(TiB)x (x = 0, 0.25, 0.5, 0.75, 1) coatings were fabricated on 45 steel substrates via laser cladding, to investigate the effect of precipitates phase on the tribological behavior under dry sliding condition. The metallic matrix coating with a dendritic microstructure consists of ordered Al-Ni and disordered Fe-Cr body-center cubic (BCC) phases. The Ti element preferentially dissolves in the Al-Ni phase, while the B element does not exhibit a clear tendency for solid-solution. As the content of Ti and B elements increases, rod-like M2B (M = Fe, Cr) precipitates, TiC precipitates, and TiB2 precipitates with TiC cores precipitate successively, and increase in content. For x = 1, bulk TiB2 precipitates become the predominant phase of the coating, and the average microhardness of the coating reaches its peak at 939.37 HV0.3. The enhancement in coating microhardness is primarily attributed to precipitation strengthening, complemented by solid solution strengthening and fine grain strengthening. The wear rate of the coatings exhibits a decreasing trend with increasing Ti and B content, with a minor interruption at x = 0.5. The small amount of Ti and B doping has the most significant impact on wear resistance, primarily due to the improved adhesion and micro-cutting resistance resulting from the increase in microhardness. At x = 0.5, three-body wear caused by the fracture and detachment of M2B precipitates leads to greater material loss from the metal matrix in the coating. The transformation of complex precipitates into a load-bearing structure in the microstructure, along with the protective effect of the oxide film, leads to the best wear resistance for the coating at x =1.0, with a wear rate as low as 1.13 x 10-5 mm3/(N & sdot;m). |
| Keyword | High-entropy alloy Laser cladding Microstructure Microhardness Tribological performance |
| DOI | 10.1016/j.surfcoat.2025.131870 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:001425667800001 |
| WOS Keyword | MECHANICAL-PROPERTIES ; WEAR-RESISTANCE ; BEHAVIOR ; PARTICLE ; TI ; MODULUS ; CO |
| WOS Research Area | Materials Science ; Physics |
| WOS Subject | Materials Science, Coatings & Films ; Physics, Applied |
| Funding Project | National Natural Science Foundation of China[52375223] ; National Natural Science Foundation of China[12172332] ; Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) ; Advanced Analysis & Computation Center, China University of Mining and Technology |
| Funding Organization | National Natural Science Foundation of China ; Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) ; Advanced Analysis & Computation Center, China University of Mining and Technology |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/100138 |
| Collection | 宽域飞行工程科学与应用中心 |
| Corresponding Author | Liang, Huiyue |
| Affiliation | 1.China Univ Min & Technol, Sch Mech & Elect Engn, Xuzhou 221116, Peoples R China 2.China Univ Min & Technol, Jiangsu Key Lab Mine Mech & Elect Equipment, Xuzhou 221116, Peoples R China 3.Zhejiang Univ Technol, Coll Mech Engn, Hangzhou 310023, Peoples R China 4.China Univ Min & Technol, Sch Mech & Civil Engn, Xuzhou 221116, Peoples R China 5.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China |
| Recommended Citation GB/T 7714 | Liu, Hao,Liang, Huiyue,Peng, Guangjian,et al. Microstructure evolution and tribological performance of laser-clad Al1.5Co0.5CrFeNi2(TiB)x high-entropy alloy composite coatings with in-situ synthesized complex precipitates[J]. SURFACE & COATINGS TECHNOLOGY,2025,499:17. |
| APA | Liu, Hao.,Liang, Huiyue.,Peng, Guangjian.,Chen, Peijian.,Liu, Xinhua.,...&Yu, Gang.(2025).Microstructure evolution and tribological performance of laser-clad Al1.5Co0.5CrFeNi2(TiB)x high-entropy alloy composite coatings with in-situ synthesized complex precipitates.SURFACE & COATINGS TECHNOLOGY,499,17. |
| MLA | Liu, Hao,et al."Microstructure evolution and tribological performance of laser-clad Al1.5Co0.5CrFeNi2(TiB)x high-entropy alloy composite coatings with in-situ synthesized complex precipitates".SURFACE & COATINGS TECHNOLOGY 499(2025):17. |
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