通过表面磨削提高双相高熵合金的高温耐蚀性和抗裂性

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

Corrosion Science Pub Date : 2025-08-05 DOI:10.1016/j.corsci.2025.113227

Kai Chen , Yuhao Zhou , Yihan Zhao , Jiamei Wang , Zhao Shen , Hui Wang , Xiaoqin Zeng

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引用次数: 0

摘要

在这项研究中，开发了一种富铝双相高熵合金（DP-HEA），以评估其替代传统铝形成奥氏体（AFA）合金的潜力，特别是在600°C的高温蒸汽下。DP-HEA具有优异的耐腐蚀性能，这是由于其高铝含量，特别是在体心立方相（BCC）中，有利于形成保护性Al2O3层。BCC相表现出优异的抗氧化性，而面心立方（FCC）相则被选择性氧化。表面磨削通过促进表面动态再结晶和镍偏析进一步增强了材料的耐蚀性和抗裂性，这有助于防止应变集中和延迟裂纹萌生，从而提高材料的抗裂性。

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Enhancing high-temperature corrosion and cracking resistance of a dual-phase high entropy alloy through surface grinding

In this study, an aluminum-enriched dual-phase high-entropy alloy (DP-HEA) was developed to evaluate its potential as a replacement for conventional alumina-forming austenitic (AFA) alloys, especially under high-temperature steam at 600°C. The DP-HEA showed superior resistance to corrosion, attributed to its high aluminum content, especially in the body-centered cubic (BCC) phase, which facilitated the formation of a protective Al₂O₃ layer. The BCC phase demonstrated exceptional oxidation resistance, whereas the face-centered cubic (FCC) phase was selectively oxidized. Surface grinding further enhanced corrosion and cracking resistance by promoting dynamic recrystallization and nickel segregation at the surface, which helped prevent strain concentration and delayed crack initiation, thereby improving its cracking resistance.

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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.