Composition change in oxide inclusions of stainless steel by heat treatment

被引：75

作者：

Shibata, H. ^{[1
]}

Tanaka, T. ^{[2
]}

Kimura, K. ^{[3
]}

Kitamura, S. -Y. ^{[1
]}

机构：

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

[2] Kobe Steel Ltd, Moka, Tochigi 3214367, Japan

[3] Toyota Motor Co Ltd, Aichi 4718571, Japan

来源：

IRONMAKING & STEELMAKING | 2010年 / 37卷 / 07期

基金：

日本学术振兴会;

关键词：

Oxide inclusion; Stainless steel; Heat treatment; Composition change; EQUILIBRIUM; MNO;

D O I：

10.1179/030192310X12700328925903

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

It is known that the oxide composition in stainless steel changes during heat treatment; however, the precise conditions to cause change are not clear. Therefore, the conditions necessary to change the oxide composition by heat treatment have been investigated using steels with different concentrations of Si, Mn, Ni and Cr. The MnO-SiO(2) type inclusions changed into MnO-Cr(2)O(3) type inclusions in steel containing 18%Cr and 8%Ni after heat treatment with a low silicon concentration. At high silicon content, the MnO-SiO(2) type inclusion was stable after heat treatment. The change in the composition of oxide inclusions owing to heat treatment depended on the concentrations of Cr in steel. The critical Si content, below which the oxide composition change was observed after the heat treatment, decreased with the decrease in Cr content. In steel containing 1%Cr, the oxide composition change was not observed.

引用

页码：522 / 528

页数：7

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