New insight on the formation of uneven oxide scales on AFA steel in supercritical CO2: Roles of recrystallization degree on the high temperature corrosion resistance

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

Corrosion Science Pub Date : 2024-10-24 DOI:10.1016/j.corsci.2024.112540

Qiyin Zhou , Jianye Chen , Huigang Shi , Lefu Zhang , Yanping Huang , Gen Zhang , Yongfu Zhao , Xianglong Guo

引用次数: 0

Abstract

Uneven oxide scale is a common phenomenon in high-temperature corrosion, but the formation mechanism has not been fully uncovered. A new alumina-forming austenitic (AFA) stainless steel with superior corrosion resistance in 650°C/15 MPa SC-CO₂, has been systematically investigated. It is demonstrated that the uneven oxide was formed by the significant impact of the recrystallization behavior of AFA steel on its microstructural evolution and subsequent corrosion behavior. Compared with the thin oxide scale, the thick oxide scale was caused by the relatively higher density of dislocations and grain boundaries of matrix resulting from delayed recrystallization, which facilitated the rapid outward diffusion of ions.

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超临界二氧化碳中 AFA 钢上不均匀氧化物鳞片形成的新发现再结晶程度对高温耐腐蚀性的影响

不均匀氧化鳞是高温腐蚀中的一种常见现象，但其形成机理尚未完全揭示。我们对一种在 650°C/15 MPa SC-CO2 中具有优异耐腐蚀性能的新型氧化铝奥氏体（AFA）不锈钢进行了系统研究。研究表明，不均匀氧化物的形成是由于 AFA 钢的再结晶行为对其微观结构演变和随后的腐蚀行为产生了重大影响。与薄氧化皮相比，厚氧化皮是由于延迟再结晶导致基体位错和晶界密度相对较高，从而促进了离子的快速向外扩散。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.