Kedong Yu , Zhen Li , Fujie Zhou , Yingzhe Li , Jinglong Tang , Zhen Luo
{"title":"C含量对AlCoCrFeNiTiW高熵合金涂层组织演变及耐磨性的影响","authors":"Kedong Yu , Zhen Li , Fujie Zhou , Yingzhe Li , Jinglong Tang , Zhen Luo","doi":"10.1016/j.surfcoat.2025.132115","DOIUrl":null,"url":null,"abstract":"<div><div>Laser cladding was used to fabricate AlCoCrFeNiTiWC<sub>x</sub> high-entropy alloy (HEA) coatings (x = 0, 0.5, 1, 1.5, 2) reinforced with μ-phase and in-situ (Ti, W)C carbides. The influence of carbon content on the coatings' microstructure, microhardness, and wear resistance was examined. Results showed that all coatings exhibited a dominant BCC phase. With increasing carbon content, the μ-phase evolved from a blocky to a network-like structure, while its volume fraction decreased. Simultaneously, the carbides transformed from near-spherical to flower-like and dendritic morphologies, with their volume fraction increasing. Wear resistance initially improved and then declined, with the C<sub>1</sub> coating demonstrating the highest resistance. The primary wear mechanisms were abrasive and oxidative wear. Strengthening mechanisms included solid solution strengthening, secondary phase strengthening by μ-phase and in-situ carbides, and grain refinement strengthening.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"505 ","pages":"Article 132115"},"PeriodicalIF":6.1000,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effect of C content on the microstructural evolution and wear resistance of AlCoCrFeNiTiW high-entropy alloy coatings\",\"authors\":\"Kedong Yu , Zhen Li , Fujie Zhou , Yingzhe Li , Jinglong Tang , Zhen Luo\",\"doi\":\"10.1016/j.surfcoat.2025.132115\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Laser cladding was used to fabricate AlCoCrFeNiTiWC<sub>x</sub> high-entropy alloy (HEA) coatings (x = 0, 0.5, 1, 1.5, 2) reinforced with μ-phase and in-situ (Ti, W)C carbides. The influence of carbon content on the coatings' microstructure, microhardness, and wear resistance was examined. Results showed that all coatings exhibited a dominant BCC phase. With increasing carbon content, the μ-phase evolved from a blocky to a network-like structure, while its volume fraction decreased. Simultaneously, the carbides transformed from near-spherical to flower-like and dendritic morphologies, with their volume fraction increasing. Wear resistance initially improved and then declined, with the C<sub>1</sub> coating demonstrating the highest resistance. The primary wear mechanisms were abrasive and oxidative wear. Strengthening mechanisms included solid solution strengthening, secondary phase strengthening by μ-phase and in-situ carbides, and grain refinement strengthening.</div></div>\",\"PeriodicalId\":22009,\"journal\":{\"name\":\"Surface & Coatings Technology\",\"volume\":\"505 \",\"pages\":\"Article 132115\"},\"PeriodicalIF\":6.1000,\"publicationDate\":\"2025-04-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Surface & Coatings Technology\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0257897225003895\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, COATINGS & FILMS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Surface & Coatings Technology","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0257897225003895","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, COATINGS & FILMS","Score":null,"Total":0}
Effect of C content on the microstructural evolution and wear resistance of AlCoCrFeNiTiW high-entropy alloy coatings
Laser cladding was used to fabricate AlCoCrFeNiTiWCx high-entropy alloy (HEA) coatings (x = 0, 0.5, 1, 1.5, 2) reinforced with μ-phase and in-situ (Ti, W)C carbides. The influence of carbon content on the coatings' microstructure, microhardness, and wear resistance was examined. Results showed that all coatings exhibited a dominant BCC phase. With increasing carbon content, the μ-phase evolved from a blocky to a network-like structure, while its volume fraction decreased. Simultaneously, the carbides transformed from near-spherical to flower-like and dendritic morphologies, with their volume fraction increasing. Wear resistance initially improved and then declined, with the C1 coating demonstrating the highest resistance. The primary wear mechanisms were abrasive and oxidative wear. Strengthening mechanisms included solid solution strengthening, secondary phase strengthening by μ-phase and in-situ carbides, and grain refinement strengthening.
期刊介绍：
Surface and Coatings Technology is an international archival journal publishing scientific papers on significant developments in surface and interface engineering to modify and improve the surface properties of materials for protection in demanding contact conditions or aggressive environments, or for enhanced functional performance. Contributions range from original scientific articles concerned with fundamental and applied aspects of research or direct applications of metallic, inorganic, organic and composite coatings, to invited reviews of current technology in specific areas. Papers submitted to this journal are expected to be in line with the following aspects in processes, and properties/performance:
A. Processes: Physical and chemical vapour deposition techniques, thermal and plasma spraying, surface modification by directed energy techniques such as ion, electron and laser beams, thermo-chemical treatment, wet chemical and electrochemical processes such as plating, sol-gel coating, anodization, plasma electrolytic oxidation, etc., but excluding painting.
B. Properties/performance: friction performance, wear resistance (e.g., abrasion, erosion, fretting, etc), corrosion and oxidation resistance, thermal protection, diffusion resistance, hydrophilicity/hydrophobicity, and properties relevant to smart materials behaviour and enhanced multifunctional performance for environmental, energy and medical applications, but excluding device aspects.
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