{"title":"Precipitated phases of superaustenitic stainless steel 654SMO","authors":"Zhi-gang Song , En-xiang Pu","doi":"10.1016/S1006-706X(17)30112-7","DOIUrl":null,"url":null,"abstract":"<div><p>The phase diagram of superaustenitic stainless steel 654SMO was calculated by thermodynamic software and the precipitated phases in the specimens aged at 800 – 1100 °C for 1 h were studied by methods of physicochemical phase analysis, scanning electron microscopy and transmission electron microscopy. The results showed that the size of precipitated particles increased with increasing the temperature. The amount of second phases reached the maximum value at 900 °C, but decreased above 900 °C. There were about eight kinds of precipitated phases in 654SMO including σ phase, Cr<sub>2</sub>N, μ phase, χ phase, Laves phase, M<sub>23</sub>C<sub>6</sub>, M<sub>6</sub>C and M<sub>3</sub>C, in which the σ phase and Cr<sub>2</sub> N were the dominant precipitated phases.</p></div>","PeriodicalId":64470,"journal":{"name":"Journal of Iron and Steel Research(International)","volume":null,"pages":null},"PeriodicalIF":3.1000,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1006-706X(17)30112-7","citationCount":"14","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Iron and Steel Research(International)","FirstCategoryId":"1087","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1006706X17301127","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}
引用次数: 14
Abstract
The phase diagram of superaustenitic stainless steel 654SMO was calculated by thermodynamic software and the precipitated phases in the specimens aged at 800 – 1100 °C for 1 h were studied by methods of physicochemical phase analysis, scanning electron microscopy and transmission electron microscopy. The results showed that the size of precipitated particles increased with increasing the temperature. The amount of second phases reached the maximum value at 900 °C, but decreased above 900 °C. There were about eight kinds of precipitated phases in 654SMO including σ phase, Cr2N, μ phase, χ phase, Laves phase, M23C6, M6C and M3C, in which the σ phase and Cr2 N were the dominant precipitated phases.