Microstructural and magnetic investigations of duplex steel

11th Hungarian Conference on Materials Science

Mészáros, I.^1 ; Bögre, B.^1

Budapest University of Technology and Economics, Department of Materials Science and Engineering, Budapest, Hungary^1

关键词: Duplex steels;    Electron back scatter diffraction;    Eutectoid decomposition;    Ferrite content;    Ferrite decomposition;    Measuring method;    Micro-structural;    Super duplex stainless steel;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/426/1/012034/pdf
DOI  :  10.1088/1757-899X/426/1/012034

来源: IOP

【 摘 要 】

In this work, the eutectoid decomposition of δ-ferrite was investigated in 2507 type super duplex stainless steel. Samples were cold rolled in different extents and then heat treated at different temperatures. The ferrite contents of the specimens were determined by magnetic measurements and electron backscatter diffraction. The microstructure was examined by optical microscope and electron backscatter diffraction. The results showed that the cold rolling before the heat treatment significantly increases the rate of eutectoid decomposition and decreases the starting temperature of the ferrite decomposition. The measured ferrite contents with various methods showed diverse results because of the different principles of the measuring methods.