{"title":"Influence of tempering temperature on microstructure and stress corrosion crack (SCC) behavior of a new high strength round-link chain steel","authors":"Xin Wang, Xiaokai Liang, Shuai Tong, Xinjun Sun","doi":"10.1016/j.corsci.2025.112770","DOIUrl":null,"url":null,"abstract":"<div><div>This study investigated the influence of tempering temperature on the microstructural evolution and stress corrosion cracking (SCC) behaviors of a newly developed high-strength mining round-link chain steel. As the tempering temperature increased, the dislocation density progressively decreased, while the amount of (V, Mo)C precipitates significantly increased. After tempering at 625 °C, a substantial number of nanoscale (V, Mo)C precipitates with a certain concentration of carbon vacancies were uniformly distributed. Compared to present commercial high-strength round-link chain steels, the newly developed round-link chain steel demonstrated superior SCC resistance at similar yield strength level. Based on the influence of nano-scale precipitates and dislocation density on hydrogen diffusion characteristics, this study further elucidated the potential mechanisms underlying hydrogen-induced stress corrosion cracking in high-strength round-link chain steel.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"246 ","pages":"Article 112770"},"PeriodicalIF":7.4000,"publicationDate":"2025-02-09","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/S0010938X25000976","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}
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Abstract
This study investigated the influence of tempering temperature on the microstructural evolution and stress corrosion cracking (SCC) behaviors of a newly developed high-strength mining round-link chain steel. As the tempering temperature increased, the dislocation density progressively decreased, while the amount of (V, Mo)C precipitates significantly increased. After tempering at 625 °C, a substantial number of nanoscale (V, Mo)C precipitates with a certain concentration of carbon vacancies were uniformly distributed. Compared to present commercial high-strength round-link chain steels, the newly developed round-link chain steel demonstrated superior SCC resistance at similar yield strength level. Based on the influence of nano-scale precipitates and dislocation density on hydrogen diffusion characteristics, this study further elucidated the potential mechanisms underlying hydrogen-induced stress corrosion cracking in high-strength round-link chain 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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