{"title":"Effect of Mo on the σ phase precipitation behavior of super austenitic stainless steel","authors":"Qun-kun Hu, Hua-yun Du, Xiaolu Sun, Li-feng Hou, Qian Wang, Zhanhu Guo, Handong Li, Jincheng Fan, Yinghui Wei, Xiao-da Liu, Huan Wei, Xingkui Guo","doi":"10.1680/jemmr.23.00085","DOIUrl":null,"url":null,"abstract":"The aging precipitation behavior of super austenitic stainless steels 904L (4.32% Mo), 254SMo (6.06% Mo), and AL-6XN (6.29% Mo) with different Mo contents at 800°C-900°C was investigated by scanning electron microscopy, X-ray diffraction, and transmission electron microscopy, and the effect of Mo content on the σ-phase precipitation behavior of commonly used super austenitic stainless steels was explored. The effect of Mo content on the σ-phase precipitation behavior of commonly used super austenitic stainless steel was investigated. The results show that the super austenitic stainless steels with different Mo contents formed different numbers and shapes of σ-phases in the isothermal aging process, and the number of σ-phases of 254SMo and AL-6XN is much larger than that of 904L, and the shape of the σ-phases mainly shows coarse acicularity and elongation, while the σ-phases of 904L show fine granularity.","PeriodicalId":1,"journal":{"name":"Accounts of Chemical Research","volume":"60 1","pages":""},"PeriodicalIF":17.7000,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Accounts of Chemical Research","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1680/jemmr.23.00085","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
The aging precipitation behavior of super austenitic stainless steels 904L (4.32% Mo), 254SMo (6.06% Mo), and AL-6XN (6.29% Mo) with different Mo contents at 800°C-900°C was investigated by scanning electron microscopy, X-ray diffraction, and transmission electron microscopy, and the effect of Mo content on the σ-phase precipitation behavior of commonly used super austenitic stainless steels was explored. The effect of Mo content on the σ-phase precipitation behavior of commonly used super austenitic stainless steel was investigated. The results show that the super austenitic stainless steels with different Mo contents formed different numbers and shapes of σ-phases in the isothermal aging process, and the number of σ-phases of 254SMo and AL-6XN is much larger than that of 904L, and the shape of the σ-phases mainly shows coarse acicularity and elongation, while the σ-phases of 904L show fine granularity.
期刊介绍：
Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance.
Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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