首页|Eutectic high-entropy alloys and their applications in materials processing engineering:A review
Eutectic high-entropy alloys and their applications in materials processing engineering:A review
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Eutectic high-entropy alloys(EHEAs),combining the advantages of both eutectic alloys and high-entropy alloys(HEAs),possess good castability and superior comprehensive mechanical properties which are re-garded as a revolutionary material system.In this paper,a current study of EHEAs is captured compre-hensively for the first time,including basic theory,microstructure and deformation behavior,and alloy design.An in-depth analysis of the formation of different microstructures of EHEAs and their mechani-cal properties is presented,and four methods of designing EHEAs are summarized.Due to their unique characteristics,EHEAs show great potential in materials processing engineering.Here we give a compre-hensive summary of their applications in welding,surface engineering,and additive manufacturing for the first time.Among them,EHEAs in welding are divided into three sections based on different welding techniques:fusion-based welding,solid-state welding,and diffusion reaction-based welding;EHEAs in surface engineering are separated into two parts:surface modification of bulk EHEAs and EHEA coatings;EHEAs in additive manufacturing are elaborated in two parts:laser powder bed fusion(LPBF)and laser direct energy deposition(LDED).Finally,a summary is given and a future outlook is prospected.
State Key Laboratory of Advanced Welding and Joining,Harbin Institute of Technology,Harbin 150001,China
Shandong Provincial Key Laboratory of Special Welding Technology,Harbin Institute of Technology(Weihai),Weihai 264209,China
Research Institute of Special Steel,Central Iron and Steel Research Institute,Beijing 100081,China
State Key Laboratory of Advanced Welding and Joining,Harbin Institute of Technology,Harbin,150001,China
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National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNatural Science Foundation of Shandong ProvinceNatural Science Foundation of Shandong Province
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