{"title":"共晶高熵合金增材制造的研究进展:工艺-显微组织-力学性能的耦合关系和操作策略","authors":"Xinjie Zhang, Yiwei Sun, Cijun Shuai, Chengde Gao","doi":"10.1016/j.jallcom.2025.182496","DOIUrl":null,"url":null,"abstract":"As a new research hotspot of advanced materials, eutectic high entropy alloys (EHEAs) with multiphase and fine microstructures are well known for their excellent comprehensive properties, including balanced strength and ductility, endowing them great potential for wide applications. However, the main challenges of developing EHEAs lie in the manipulation of nano-/ultrafine eutectic microstructure and phase evolutions. In recent years, additive manufacturing (AM) has shown encouraging capability in addressing these challenges by precise manipulation over microstructure and performance. This review focuses on the state-of-the-art studies of AM techniques on the microstructure evolution and manipulation strategies of EHEAs. Firstly, the compositional systems of EHEAs are reviewed, with recent advancement mostly in CoCrFeNi, FeCoNiAl, TiHfNiFeNb, CoMoNiVW, etc., systems. The typical eutectic characteristics of EHEAs are also summarized in terms of lamellar, flowering, seedlike, globose, and short-sticklike structures. The deformation mechanisms of multiphase eutectic structures and the influence of phase interfaces on the properties of EHEAs are discussed. Afterwards, this review summarizes the development of AM-prepared EHEAs focusing on laser powder bed fusion, directed energy deposition, and arc additive manufacturing. A thorough examination of the process principles, microstructural evolution, and the corresponding manipulation strategies, alongside the performance attributes inherent to each AM process, are systematically elucidated. Given to the distinct advantages and limitations for different AM techniques, sustained research and technological innovation are paramount in advancing the performance and applicability of AM-prepared EHEAs, particularly in the challenges related to material properties and process manipulation.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"116 1","pages":""},"PeriodicalIF":6.3000,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Progress on additive manufacturing of eutectic high entropy alloys: coupling correlations and manipulation strategies for process-microstructure-mechanical performance\",\"authors\":\"Xinjie Zhang, Yiwei Sun, Cijun Shuai, Chengde Gao\",\"doi\":\"10.1016/j.jallcom.2025.182496\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"As a new research hotspot of advanced materials, eutectic high entropy alloys (EHEAs) with multiphase and fine microstructures are well known for their excellent comprehensive properties, including balanced strength and ductility, endowing them great potential for wide applications. However, the main challenges of developing EHEAs lie in the manipulation of nano-/ultrafine eutectic microstructure and phase evolutions. In recent years, additive manufacturing (AM) has shown encouraging capability in addressing these challenges by precise manipulation over microstructure and performance. This review focuses on the state-of-the-art studies of AM techniques on the microstructure evolution and manipulation strategies of EHEAs. Firstly, the compositional systems of EHEAs are reviewed, with recent advancement mostly in CoCrFeNi, FeCoNiAl, TiHfNiFeNb, CoMoNiVW, etc., systems. The typical eutectic characteristics of EHEAs are also summarized in terms of lamellar, flowering, seedlike, globose, and short-sticklike structures. The deformation mechanisms of multiphase eutectic structures and the influence of phase interfaces on the properties of EHEAs are discussed. Afterwards, this review summarizes the development of AM-prepared EHEAs focusing on laser powder bed fusion, directed energy deposition, and arc additive manufacturing. A thorough examination of the process principles, microstructural evolution, and the corresponding manipulation strategies, alongside the performance attributes inherent to each AM process, are systematically elucidated. Given to the distinct advantages and limitations for different AM techniques, sustained research and technological innovation are paramount in advancing the performance and applicability of AM-prepared EHEAs, particularly in the challenges related to material properties and process manipulation.\",\"PeriodicalId\":344,\"journal\":{\"name\":\"Journal of Alloys and Compounds\",\"volume\":\"116 1\",\"pages\":\"\"},\"PeriodicalIF\":6.3000,\"publicationDate\":\"2025-07-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Alloys and Compounds\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1016/j.jallcom.2025.182496\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Alloys and Compounds","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1016/j.jallcom.2025.182496","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Progress on additive manufacturing of eutectic high entropy alloys: coupling correlations and manipulation strategies for process-microstructure-mechanical performance
As a new research hotspot of advanced materials, eutectic high entropy alloys (EHEAs) with multiphase and fine microstructures are well known for their excellent comprehensive properties, including balanced strength and ductility, endowing them great potential for wide applications. However, the main challenges of developing EHEAs lie in the manipulation of nano-/ultrafine eutectic microstructure and phase evolutions. In recent years, additive manufacturing (AM) has shown encouraging capability in addressing these challenges by precise manipulation over microstructure and performance. This review focuses on the state-of-the-art studies of AM techniques on the microstructure evolution and manipulation strategies of EHEAs. Firstly, the compositional systems of EHEAs are reviewed, with recent advancement mostly in CoCrFeNi, FeCoNiAl, TiHfNiFeNb, CoMoNiVW, etc., systems. The typical eutectic characteristics of EHEAs are also summarized in terms of lamellar, flowering, seedlike, globose, and short-sticklike structures. The deformation mechanisms of multiphase eutectic structures and the influence of phase interfaces on the properties of EHEAs are discussed. Afterwards, this review summarizes the development of AM-prepared EHEAs focusing on laser powder bed fusion, directed energy deposition, and arc additive manufacturing. A thorough examination of the process principles, microstructural evolution, and the corresponding manipulation strategies, alongside the performance attributes inherent to each AM process, are systematically elucidated. Given to the distinct advantages and limitations for different AM techniques, sustained research and technological innovation are paramount in advancing the performance and applicability of AM-prepared EHEAs, particularly in the challenges related to material properties and process manipulation.
期刊介绍:
The Journal of Alloys and Compounds is intended to serve as an international medium for the publication of work on solid materials comprising compounds as well as alloys. Its great strength lies in the diversity of discipline which it encompasses, drawing together results from materials science, solid-state chemistry and physics.