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首页> 外文期刊>ISIJ international >Effect of Al on the evolution of non-metallic inclusions in the Mn-Si-Ti-Mg deoxidized steel during solidification: Experiments and thermodynamic calculations
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Effect of Al on the evolution of non-metallic inclusions in the Mn-Si-Ti-Mg deoxidized steel during solidification: Experiments and thermodynamic calculations

机译：Al对Mn-Si-Ti-Mg脱氧钢凝固过程中非金属夹杂物演变的影响：实验和热力学计算

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摘要

The effect of Al on the evolution of non-metallic inclusions in the Mn-Si-Ti-Mg deoxidized steels during solidification were investigated based on the experiments and thermodynamic calculations. The inclusions belonged to the MgO-TiO_2-Ti_2O_3-Al_2O-3+MnS+TiN system. In particular, the major oxide inclusion was the Mg-Ti-Al-O spinel phase of which composition was continuously changed from the Mg-Ti-O to MgAl_2O-4 with the concentration Al in steels. The spinel compositions calculated from thermodynamic databases are in good agreement with experimental results. TiN was only observed on the surface of MnS. MgAl_2O_4 aggregates were also observed at high Al concentration. In general, the evolution of inclusions is well explained by thermodynamic calculations.
机译：通过实验和热力学计算，研究了Al对Mn-Si-Ti-Mg脱氧钢中非金属夹杂物演变的影响。夹杂物属于MgO-TiO_2-Ti_2O_3-Al_2O-3 + MnS + TiN体系。特别地，主要的氧化物夹杂物是Mg-Ti-Al-O尖晶石相，其组成从Mg-Ti-O变为MgAl_2O-4，钢中的Al浓度连续变化。从热力学数据库计算出的尖晶石成分与实验结果非常吻合。仅在MnS表面观察到TiN。在高铝浓度下也观察到MgAl_2O_4聚集体。通常，通过热力学计算可以很好地解释夹杂物的演变。

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