Synergistic influence of L12 precipitates on the mechanical properties and corrosion resistance of CoCrFeNi2-based high entropy alloys

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science Pub Date : 2025-02-14 DOI:10.1016/j.corsci.2025.112781

K.W. Kang, A.X. Li, B.R. Zhang, J.S. Zhang, M.K. Xu, D. Huang, S.K. Liu, Y.T. Jiang, G. Li

引用次数: 0

Abstract

This study fabricated a series of CoCrFeNi₂-based high entropy alloys with L1₂ precipitates, achieving synergistic improvements in mechanical properties and corrosion resistance. The increase in strength is primarily attributed to precipitation strengthening. Corrosion resistance is improved by the L1₂ precipitates, which enrich the FCC phase with chromium, thereby enhancing the concentration of Cr₂O₃ in the passive film. Furthermore, first-principles calculations reveal that the improved corrosion resistance is due to the high work function and the lower surface adsorption energy of L1₂ precipitates.

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来源期刊

Corrosion Science 工程技术-材料科学：综合

CiteScore

13.60

自引率

18.10%

发文量

763

审稿时长

46 days

期刊介绍： Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies. This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.