Open AccessInclusions properties at 1673 K and room temperature with Ce addition in SS400 steel
Author(s) -
Fei Pan,
Hao Long Chen,
Yen Hsun Su,
Yen Hao Frank Su,
Woonbong Hwang
Publication year - 2017
Publication title -
scientific reports
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.24
H-Index - 213
ISSN - 2045-2322
DOI - 10.1038/s41598-017-02478-6
Subject(s) - transmission electron microscopy , scanning electron microscope , materials science , inclusion (mineral) , diffraction , amorphous solid , metallurgy , cerium , morphology (biology) , electron diffraction , crystallography , composite material , mineralogy , chemistry , nanotechnology , optics , physics , biology , genetics
Inclusion species formed in SS400 steel with Ce-addition was predicted by thermodynamic calculation. The analysis of the inclusion morphology and size distribution was carried out by applying Scanning Electron Microscopy (SEM) and Transmission Electron Microscope (TEM). Nano-Fe 3 O 4 particles were also found in cerium-deoxidized and -desulfurized steel and their shapes were nearly spherical. The complex Ce 2 O 3 inclusions covering a layer of 218 nm composed by several MnS particles with similar diffraction pattern. Most importantly, the complex Ce 2 O 3 characterized by using TEM diffraction is amorphous in the steel, indicating that Ce 2 O 3 formed in the liquid iron and then MnS segregated cling to it.