{"title":"层间冷却对激光增材制造FeCoNiCrAl高熵合金显微组织和显微硬度的影响","authors":"Zengrong Hu, Mingrui Chen, Zhikang Wu, Shuncun Luo, Xiaonan Wang, Jiale Xu, Hai Zhang","doi":"10.1007/s11665-025-10678-9","DOIUrl":null,"url":null,"abstract":"<div><p>The FeCoNiCrAl high-entropy alloys prepared by laser additive manufacturing are promising for a wide range of applications. In this study, samples of FeCoNiCrAl high-entropy alloy fabricated by laser additive manufacturing under different process conditions were investigated. In this study, two kinds of laser additive methods without interlayer cooling and interlayer cooling were used, respectively, and the experimental results were compared, and the microstructure and composition were analyzed. The results show that both samples are mainly composed of disordered BCC solid solution and ordered B2 cubic structure. The microstructure of both samples changed from columnar to equiaxed grains due to the different thermal gradients and solidification rates at the top and bottom of each layer. The equiaxed grain size of the sample with interlayer cooling was smaller than that of the sample without interlayer cooling due to the difference in undercooling, which caused the microhardness of the sample with interlayer cooling to be larger than that of the sample without interlayer cooling.</p></div>","PeriodicalId":644,"journal":{"name":"Journal of Materials Engineering and Performance","volume":"34 17","pages":"18426 - 18433"},"PeriodicalIF":2.0000,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effect of Interlayer Cooling on Microstructure and Microhardness of FeCoNiCrAl High-Entropy Alloy Fabricated by Laser Additive Manufacturing\",\"authors\":\"Zengrong Hu, Mingrui Chen, Zhikang Wu, Shuncun Luo, Xiaonan Wang, Jiale Xu, Hai Zhang\",\"doi\":\"10.1007/s11665-025-10678-9\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The FeCoNiCrAl high-entropy alloys prepared by laser additive manufacturing are promising for a wide range of applications. In this study, samples of FeCoNiCrAl high-entropy alloy fabricated by laser additive manufacturing under different process conditions were investigated. In this study, two kinds of laser additive methods without interlayer cooling and interlayer cooling were used, respectively, and the experimental results were compared, and the microstructure and composition were analyzed. The results show that both samples are mainly composed of disordered BCC solid solution and ordered B2 cubic structure. The microstructure of both samples changed from columnar to equiaxed grains due to the different thermal gradients and solidification rates at the top and bottom of each layer. The equiaxed grain size of the sample with interlayer cooling was smaller than that of the sample without interlayer cooling due to the difference in undercooling, which caused the microhardness of the sample with interlayer cooling to be larger than that of the sample without interlayer cooling.</p></div>\",\"PeriodicalId\":644,\"journal\":{\"name\":\"Journal of Materials Engineering and Performance\",\"volume\":\"34 17\",\"pages\":\"18426 - 18433\"},\"PeriodicalIF\":2.0000,\"publicationDate\":\"2025-02-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Materials Engineering and Performance\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s11665-025-10678-9\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Materials Engineering and Performance","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s11665-025-10678-9","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Effect of Interlayer Cooling on Microstructure and Microhardness of FeCoNiCrAl High-Entropy Alloy Fabricated by Laser Additive Manufacturing
The FeCoNiCrAl high-entropy alloys prepared by laser additive manufacturing are promising for a wide range of applications. In this study, samples of FeCoNiCrAl high-entropy alloy fabricated by laser additive manufacturing under different process conditions were investigated. In this study, two kinds of laser additive methods without interlayer cooling and interlayer cooling were used, respectively, and the experimental results were compared, and the microstructure and composition were analyzed. The results show that both samples are mainly composed of disordered BCC solid solution and ordered B2 cubic structure. The microstructure of both samples changed from columnar to equiaxed grains due to the different thermal gradients and solidification rates at the top and bottom of each layer. The equiaxed grain size of the sample with interlayer cooling was smaller than that of the sample without interlayer cooling due to the difference in undercooling, which caused the microhardness of the sample with interlayer cooling to be larger than that of the sample without interlayer cooling.
期刊介绍：
ASM International''s Journal of Materials Engineering and Performance focuses on solving day-to-day engineering challenges, particularly those involving components for larger systems. The journal presents a clear understanding of relationships between materials selection, processing, applications and performance.
The Journal of Materials Engineering covers all aspects of materials selection, design, processing, characterization and evaluation, including how to improve materials properties through processes and process control of casting, forming, heat treating, surface modification and coating, and fabrication.
Testing and characterization (including mechanical and physical tests, NDE, metallography, failure analysis, corrosion resistance, chemical analysis, surface characterization, and microanalysis of surfaces, features and fractures), and industrial performance measurement are also covered
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