Effect of alloying on the cleanliness of Ti-stabilised interstitial-free (IF) steel during Ruhrstahl-Heraeus (RH) treatment

被引：0

作者：

Wei, Chunxin ^{[1
,2
,3
]}

Deng, Zhiyin ^{[1
,2
]}

Hao, Guangyu ^{[1
,2
]}

Yang, Boran ^{[1
,2
]}

Zhu, Miaoyong ^{[1
,2
]}

机构：

[1] Northeastern Univ, Key Lab Ecol Met Multimet Mineral, Minist Educ, Shenyang 110819, Peoples R China

[2] Northeastern Univ, Sch Met, Shenyang, Peoples R China

[3] Bengang Steel Plates Co Ltd, Benxi, Liaoning, Peoples R China

来源：

IRONMAKING & STEELMAKING | 2024年 / 51卷 / 10期

基金：

中国国家自然科学基金;

关键词：

Interstitial-free (IF) steel; inclusions; alloying; deoxidation; Ruhrstahl-Heraeus (RH); TRANSIENT INCLUSION EVOLUTION; LOW CARBON-STEELS; OXIDE INCLUSIONS; AL-TI; MORPHOLOGY; REOXIDATION; REMOVAL; NOZZLE; MELT;

D O I：

10.1177/03019233241258096

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

To understand the alloying process on the cleanliness of Ti-stabilised interstitial-free (IF) steel, two different alloying operation processes were conducted during Ruhrstahl-Heraeus (RH) treatment. It was found that the Ti-Fe alloy contains extremely high oxygen and nitrogen contents. After Al addition, [Al]-[O] deoxidation reaction can quickly get close to equilibrium (within 1 min), and most inclusions are pure Al2O3. After Ti-Fe addition, the TiO x content in the inclusions increases first and then drops. Because the average content of TiO x is lower than 10 mass%, most inclusions should be solid. The addition of Ti-Fe alloy just after Al addition would not evidently weaken the yield of Ti-Fe alloy, or influence the removal efficiency of the inclusions. Due to the longer RH circulation time after Ti-Fe addition, the inclusions and impurities in the alloy can be further removed, resulting in better steel cleanliness.

引用

页码：1023 / 1032

页数：10

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