Yao Zhou, Weiguo Li, Zhongqian Cao, Shenggang Li, Jinxu Li
{"title":"Enhancing hydrogen embrittlement resistance through chemical heterogeneity in austenite of medium Mn steel","authors":"Yao Zhou, Weiguo Li, Zhongqian Cao, Shenggang Li, Jinxu Li","doi":"10.1016/j.corsci.2025.112857","DOIUrl":null,"url":null,"abstract":"<div><div>This study investigates the impact of chemical heterogeneity on the hydrogen embrittlement susceptibility of medium Mn steel through slow strain rate tensile tests. By elucidating the relationship between microstructural evolution and hydrogen distribution, it is revealed that the heterogeneous Mn distribution in austenite causes Mn-depleted cores to transform into martensite first, with released hydrogen effectively enclosed by Mn-rich austenite shells. This mechanism shifts the primary site of hydrogen-induced cracking from phase interfaces to within austenite, significantly enhancing the hydrogen embrittlement resistance of medium Mn steel.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"249 ","pages":"Article 112857"},"PeriodicalIF":7.4000,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Corrosion Science","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0010938X25001842","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
This study investigates the impact of chemical heterogeneity on the hydrogen embrittlement susceptibility of medium Mn steel through slow strain rate tensile tests. By elucidating the relationship between microstructural evolution and hydrogen distribution, it is revealed that the heterogeneous Mn distribution in austenite causes Mn-depleted cores to transform into martensite first, with released hydrogen effectively enclosed by Mn-rich austenite shells. This mechanism shifts the primary site of hydrogen-induced cracking from phase interfaces to within austenite, significantly enhancing the hydrogen embrittlement resistance of medium Mn steel.
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.
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