铸造技术2017，Vol.38Issue(4)：832-836,5.DOI:10.16410/j.issn1000-8365.2017.04.024
1020℃时效条件下超级奥氏体不锈钢254SMo中析出相研究
Study on Precipitated Phase in 254SMo Super Austenitic Stainless Steel After Aging at 1020℃
摘要
Abstract
The microstructure evolution of 254SMo super austenitic stainless steel in different aging time at 1020 ℃ were studied by the combined method of JMatPro thermodynamic calculation and experiment,with the help of metallographic observation (OM),scanning electron microscopy (SEM) and transmission electron microscopy (TEM) tester.The results show that after the 254SMo super austenitic stainless steel solution was treated at 1 200 ℃ for 60 min,the microstructure shows single austenitic;when the aging temperature is 1 020 ℃,the precipitated phase increases with the increase of aging time,also the amount and size of precipitate phase increases,which is arranged in chain along the rolling direction.The precipitated phase is σ phase containing rich Cr,Mo and low Ni.It is distributed in the form of irregular dentate,block,short rod,strip shape,and cdlular.Thermodynamic calculation and experiment research all show that σ phase in 254SMo super austenitic stainless steel is precipitated according to the way of γ→σ.关键词
254SMo超级奥氏体不锈钢/时效处理/析出相/σ相Key words
254SMo super austenitic stainless steel/aging treatment/precipitated phase/σ phase分类
金属材料引用本文复制引用
来东,程宝,马莹,谢辉..1020℃时效条件下超级奥氏体不锈钢254SMo中析出相研究[J].铸造技术,2017,38(4):832-836,5.基金项目
西安航空学院校级科研基金资助项目(2016KY1208) （2016KY1208）
