BCC/B2 强化铁镍铬钼铝基多主元素合金的微观结构、力学行为和抗气蚀腐蚀性能

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

Corrosion Science Pub Date : 2024-11-06 DOI:10.1016/j.corsci.2024.112560

Jiacheng Niu , Chenliang Chu , Qiang Chen , Guoliang Hou , Weiping Chen , Tiwen Lu , Ning Yao , Haobo Cao , Zhiqiang Fu

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引用次数: 0

摘要

系统研究了无序和有序体心立方（BCC-β和B2-β′）次生相对BCC/B2强化铁镍铬钼铝基多主元素合金（MPEA）力学性能和空化侵蚀-腐蚀（CE-C）行为的影响。β/β′相含量的增加提高了 MPEA 的强度，同时保持了良好的延展性。不过，这种增加也导致钝化膜中松散结合的 Al2O3 比例增加，从而导致电化学腐蚀性能略有下降。值得注意的是，在 NaCl 溶液中，增加的 β/β′ 相显著提高了 MPEAs 的抗 CE-C 能力，这归功于其出色的耐腐蚀性和机械性能，可以承受弹性应变破坏和塑性变形。

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Microstructure, mechanical behavior, and cavitation erosion-corrosion resistance of the BCC/B2 strengthened FeNiCrMoAl-based multi-principal element alloys

The influence of disordered and ordered body-centered cubic (BCC-β and B2-β′) secondary phases on the mechanical properties and cavitation erosion-corrosion (CE-C) behavior of BCC/B2 strengthened FeNiCrMoAl-based multi-principal element alloy (MPEA) was systematically investigated. An increased β/β′ phases content enhanced the MPEAs’ strengths while maintaining good ductility. However, this increases also led to a higher proportion of loosely bound Al₂O₃ within the passivation film, resulting in a slight reduction in electrochemical corrosion performance. Remarkably, in a NaCl solution, the increased β/β′ phases significantly improved the MPEAs’ resistance to CE-C, attributed to the outstanding corrosion resistance and mechanical properties which could withstand elastic strain damage and plastic deformation.

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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.