Morphology and Chemistry of Oxide Inclusions After Al and Ti Complex Deoxidation

被引：71

作者：

Sun, Min-Ki ^{[2
]}

Jung, In-Ho ^{[1
]}

Lee, Hae-Geon ^{[3
]}

机构：

[1] McGill Univ, Dept Min & Mat Engn, Montreal, PQ H3A 2B2, Canada

[2] POSCO, Technol Res Lab, Pohang 790300, Gyeongbuk, South Korea

[3] Pohang Univ Sci & Technol, GIFT, Pohang 790784, Gyeongbuk, South Korea

来源：

METALS AND MATERIALS INTERNATIONAL | 2008年 / 14卷 / 06期

关键词：

deoxidation; Al and Ti complex deoxidation; oxide inclusion; nozzle clogging; reoxidation;

D O I：

10.3365/met.mat.2008.12.791

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The morphology and chemistry of oxide inclusions after various Al and Ti complex deoxidation sequences were investigated at 1600 degrees C. Depending on the addition sequence of Al and Ti deoxidants and the holding time, the morphology and the chemistry were changed. In particular, when Ti was added prior to Al, spherical Al2O3 oxide inclusions with hollow holes were frequently observed, which is reported for the first time. On the other hand, when Al was added prior to Ti, Al2O3 inclusion formed. When Al and Ti were added simultaneously, Al-Ti-O oxide inclusion formed in the beginning and was transformed to Al2O3 inclusion. Based on the experimental results, the formation rnechanism of the oxide inclusions after Al-Ti deoxidation was proposed. The nozzle clogging of Ti bearing Al killed steel was also discussed based on the experimental results.

引用

页码：791 / 798

页数：8

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