Effect of Slag Composition on Inclusions in Si-Deoxidized 18Cr-8Ni Stainless Steels
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- 作者：Ying Ren ; Lifeng Zhang ; Wen Fang ; Shijie Shao…
- 刊名：Metallurgical and Materials Transactions B
- 出版年：2016
- 出版时间：April 2016
- 年：2016
- 卷：47
- 期：2
- 页码：1024-1034
- 全文大小：3,825 KB
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36.Y. Zhuang, Z. Jiang, Y. Li (2010) J. Northeast. Univ. 31(10):1445-48. - 作者单位：Ying Ren (1)
Lifeng Zhang (1)
Wen Fang (1)
Shijie Shao (2)
Jun Yang (2)
Weidong Mao (2)
1. State Key Laboratory of Advanced Metallurgy and the School of Metallurgical and Ecological Engineering at University of Science and Technology Beijing (USTB), Beijing, 100083, China
2. Baoshan Iron & Steel Co., Ltd. Stainless Steel Business, Shanghai, 200431, China - 刊物类别：Chemistry and Materials Science
- 刊物主题：Chemistry
Materials Science
Manufacturing, Machines and Tools
Metallic Materials
Operating Procedures and Materials Treatment
Characterization and Evaluation Materials
Numerical and Computational Methods in Engineering - 出版者：Springer Boston
- ISSN：1543-1916
文摘
Laboratory experiments and thermodynamic calculation for the Si-deoxidized 18Cr-8Ni stainless steel with CaO-Al2O3-SiO2-CaF2-MgO-MnO slag were performed to investigate the effect of slag composition on inclusions in Si-deoxidized 18Cr-8Ni stainless steels. A high-basicity slag improved the cleanness of stainless steel, while a low basicity slag lowered the Al2O3 content in inclusions, lowering the melting temperature of inclusions and improving the deformability of inclusions. Approximately, 15 pct content of MgO in the initial slag was beneficial to reduce the corrosion of refractory and would not influence the composition of inclusions. The Al2O3 in slag should be lowered to a minimum to reduce the Al2O3 content in inclusions in Si-deoxidized 18Cr-8Ni stainless steel. The \( \log X_{{{\text{Al}}_{ 2} {\text{O}}_{ 3} }}^{i} + \log X_{\text{MgO}}^{i} - \log X_{MnO}^{i} - \log X_{{{\text{SiO}}_{2} }}^{i} \) of inclusions was expressed as a linear function of \( \log a_{{{\text{Al}}_{ 2} {\text{O}}_{ 3} }}^{\text{s}} + \log a_{\text{CaO}}^{\text{s}} - \log a_{MnO}^{\text{s}} - \log a_{{{\text{SiO}}_{2} }}^{\text{s}} \) of the slag, which was used to predict the composition of inclusions based on the activity of Al2O3, CaO, SiO2, and MnO in the slag. Moreover, the equilibrium curve of Al-O and the stability diagram of inclusions in Si-deoxidized 18Cr-8Ni stainless steel at 1873 K (1600 °C) were calculated.