Morphology and composition changes of spinel (MgAl2O4) inclusions in steel

被引：11

作者：

Dogan, N. ^{[1
]}

Longbottom, R. J. ^{[1
]}

Reid, M. H. ^{[1
]}

Chapman, M. W. ^{[2
]}

Wilson, P. ^{[2
]}

Moore, L. ^{[2
]}

Monaghan, B. J. ^{[1
]}

机构：

[1] Univ Wollongong, PYROmet Res Grp, Wollongong, NSW 2522, Australia

[2] BlueScope Steel Ltd, Port Kembla, NSW 2505, Australia

来源：

IRONMAKING & STEELMAKING | 2015年 / 42卷 / 03期

基金：

澳大利亚研究理事会;

关键词：

Inclusion modification; Inclusion reactivity; Spinel; MINIMIZATION; MECHANISM;

D O I：

10.1179/1743281214Y.0000000219

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

In this study, spinel inclusions of close to stoichiometric MgO.Al2O3 composition and known size distribution were added to a liquid steel bath before assessing their reactivity. The inclusions were then tracked for changes in size, morphology and composition with time in an aluminium killed steel at 1600 degrees C, by sampling of the melt followed by automatic SEM based inclusion analysis techniques. The majority of the inclusions in the melt were alumina and complex sulphide inclusions, with the added spinel inclusions being a small proportion of the total inclusions. The proportion of alumina inclusions increased with time. The spinel inclusions were found to be evenly distributed through the melt and there was little change in their average size during the reaction. However, the composition of the inclusions did change, with the Mg/Al mass-% ratio changing from similar to 0.5 to 0.08.

引用

页码：185 / 193

页数：9

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