Effect of Chemical Composition on Oxide Transformation and MnS Precipitation Upon Oxide Particles in Fe-Cr Alloy by Heat Treatment
(0) The transformation of nonmetallic inclusions and the change of MnS precipitation ratio on oxide particles during heat treatment were studied by using Fe-10％Cr alloy containing different Si and S content in the present study. The phenomenon of oxide transformation in alloy in this research was characterized according to Si content. When the Si content was lower, the typical inclusions changed from MnO ? SiO2 type to MnO·Cr2O3 type by heat treatment. In the case of high S concentration, the obvious MnS area in inclusions was observed after heat treatment. It was more favorable for MnS precipitation as the S content was improved from approximately 20×l 06 to 60×106. The MnS precipitation ratio on oxide particles was higher on MnO· SiO2 type than MnO-Cr2O3 type oxide particles. Besides, the ratio on the two kinds of oxides increased with increasing the time for heat treatment at 1473K as a whole. The theoretical Mn content at which MnS can precipitate agrees well with the experimental results.
nonmetallic inclusion oxide transformation Manganese Sulphide precipitation ratio heat treatment
WANG Mao WANG Xin-hua YU Hui-xiang KITAMURA Shinya SHIBATAHiroyuki
School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Be Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, Miyagi 98
国际会议
The 2nd International Symposium on Clean Steel(第二届洁净钢生产技术学术研讨会)
沈阳
英文
377-382
2011-08-23（万方平台首次上网日期，不代表论文的发表时间）