Precipitation and dispersion control of MnS by deoxidation products of ZrO2, Al2O3, MgO and MnO-SiO2 particles in Fe-10mass%Ni alloy

被引：67

作者：

Ohta, H ^{[1
]}

Suito, H ^{[1
]}

机构：

[1] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Aoba Ku, Sendai, Miyagi 9808577, Japan

来源：

ISIJ INTERNATIONAL | 2006年 / 46卷 / 04期

关键词：

crystallization; precipitation; MnS; pushing; ZrO2; Al2O3; MgO; MnO-SiO2; deoxidation particles; microsegregation; solidification; heterogeneous nucleation; misfit parameter;

D O I：

10.2355/isijinternational.46.480

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

An Fe-10mass%Ni-1mass%Mn alloy was deoxidized with Zr, Al, Mg and Si and the effect of these deoxidation particles on MnS crystallization and/or precipitation has been studied as a function of S content with forcussing on the particle dispersion in microsegregation domain. MnS cannot be uniformly dispersed in microsegregtion domain since the crystallization and/or precipitation of MnS occur only on ZrO2 or Al2O3 particles located at the region of final solidification. MnS-containing MnO-SiO2 particles can be uniformly dispersed in microsegregation domain, if the S level is low enough for particles not to be pushed. MgS and/or (Mg, Mn)S crystallize on MgO particles in Mg deoxidation. In the case of high S level, the MgO, MgS/MgO and (Mg, Mn)S/MgO particles are pushed to the region of final solidification and then MnS crystallizes and/or precipitates on the pushed particles.

引用

页码：480 / 489

页数：10

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