Experimental study on microstructure and tensile properties of high entropy alloy by laser melting deposition

IF 4.4 3区工程技术 Q1 ENGINEERING, CIVIL

Archives of Civil and Mechanical Engineering Pub Date : 2025-02-24 DOI:10.1007/s43452-025-01118-5

Wen-Bo Zhang, Xue-Long Wen, Jia-Yu Li, Ya-Dong Gong

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引用次数: 0

Abstract

The high-entropy alloy(HEA) samples FeCoNiCrTi_0.3, FeCoNiCrTi_0.5, FeCoNiCrAl_0.5 were designed and prepared by laser melting deposition (LMD), and their microstructure characterization were observed, physical phase analysis, and tensile properties were investigated. The results show that the microstructure at the top of the same LMD-HEA sample is smaller than that at the bottom. FeCoNiCrTi_0.5, FeCoNiCrTi_0.3, and FeCoNiCrAl_0.5 are all single-phase FCC structures, and the results of XRD and EBSD analysis are consistent. The fracture stroke of FeCoNiCrTi_0.3 is greater than that of FeCoNiCrTi_0.5, the tensile strength of FeCoNiCrTi_0.5 is larger but the section shrinkage is smaller. The maximum breaking load of FeCoNiCrTi_0.5 is slightly larger than that of FeCoNiCrAl_0.5, the tensile strength of FeCoNiCrTi_0.5 is larger than that of FeCoNiCrAl_0.5, the fracture shrinkage is smaller than that of FeCoNiCrAl_0.5, and there is little difference in the elongation. The number of dimples in the tensile fracture of FeCoNiCrTi_0.3 is significantly higher than that of FeCoNiCrTi_0.5, and the fracture of FeCoNiCrTi_0.5 is more flat and smooth. This study guides the study of the mechanical properties of LMD-HEA and is helpful for the high-performance design and integrated manufacturing of LMD-HEA composite components.

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来源期刊

Archives of Civil and Mechanical Engineering 工程技术-材料科学：综合

CiteScore

6.80

自引率

9.10%

发文量

201

审稿时长

4 months

期刊介绍： Archives of Civil and Mechanical Engineering (ACME) publishes both theoretical and experimental original research articles which explore or exploit new ideas and techniques in three main areas: structural engineering, mechanics of materials and materials science. The aim of the journal is to advance science related to structural engineering focusing on structures, machines and mechanical systems. The journal also promotes advancement in the area of mechanics of materials, by publishing most recent findings in elasticity, plasticity, rheology, fatigue and fracture mechanics. The third area the journal is concentrating on is materials science, with emphasis on metals, composites, etc., their structures and properties as well as methods of evaluation. In addition to research papers, the Editorial Board welcomes state-of-the-art reviews on specialized topics. All such articles have to be sent to the Editor-in-Chief before submission for pre-submission review process. Only articles approved by the Editor-in-Chief in pre-submission process can be submitted to the journal for further processing. Approval in pre-submission stage doesn''t guarantee acceptance for publication as all papers are subject to a regular referee procedure.