{"title":"Microstructure Evolution and Enhanced Wear Resistance of Al2CrFeNiMo High Entropy Alloy Coating Fabricated by Laser Cladding","authors":"Yali Gao, Sicheng Bai, Yan Tong, Pengyong Lu, Yu Liu, Dongdong Zhang","doi":"10.1007/s11666-024-01768-6","DOIUrl":null,"url":null,"abstract":"<div><p>In order to enhance the hardness and wear resistance of Cr12MoV, Al<sub>2</sub>CrFeNiMo was designed and successfully prepared by laser cladding. Phase, microstructure, hardness and wear characteristics of the coating were analyzed by x-ray diffractometer, scanning electron microscope, Vickers hardness tester and reciprocating wear tester. The results indicated that the coating was composed of BCC and FCC phases having high lattice distortion and dislocation density. Microstructure of the coating presented the equiaxed grain which was rich in Fe, Cr and existed the segregation of Mo, Al, Ni. The coating demonstrated high hardness, with the values of 600 HV<sub>0.2</sub>, which was increased by 150% than that of the substrate. Compared with the substrate, the friction coefficient and wear volume of the coating were reduced by 48.9 and 91.32%, respectively. The wear mechanism of the coating was the abrasive wear. However, the substrate exhibited the serious adhesive wear besides the abrasive wear.</p></div>","PeriodicalId":679,"journal":{"name":"Journal of Thermal Spray Technology","volume":"33 5","pages":"1472 - 1483"},"PeriodicalIF":3.2000,"publicationDate":"2024-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Thermal Spray Technology","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s11666-024-01768-6","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, COATINGS & FILMS","Score":null,"Total":0}
引用次数: 0
Abstract
In order to enhance the hardness and wear resistance of Cr12MoV, Al2CrFeNiMo was designed and successfully prepared by laser cladding. Phase, microstructure, hardness and wear characteristics of the coating were analyzed by x-ray diffractometer, scanning electron microscope, Vickers hardness tester and reciprocating wear tester. The results indicated that the coating was composed of BCC and FCC phases having high lattice distortion and dislocation density. Microstructure of the coating presented the equiaxed grain which was rich in Fe, Cr and existed the segregation of Mo, Al, Ni. The coating demonstrated high hardness, with the values of 600 HV0.2, which was increased by 150% than that of the substrate. Compared with the substrate, the friction coefficient and wear volume of the coating were reduced by 48.9 and 91.32%, respectively. The wear mechanism of the coating was the abrasive wear. However, the substrate exhibited the serious adhesive wear besides the abrasive wear.
期刊介绍：
From the scientific to the practical, stay on top of advances in this fast-growing coating technology with ASM International''s Journal of Thermal Spray Technology. Critically reviewed scientific papers and engineering articles combine the best of new research with the latest applications and problem solving.
A service of the ASM Thermal Spray Society (TSS), the Journal of Thermal Spray Technology covers all fundamental and practical aspects of thermal spray science, including processes, feedstock manufacture, and testing and characterization.
The journal contains worldwide coverage of the latest research, products, equipment and process developments, and includes technical note case studies from real-time applications and in-depth topical reviews.
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