DE-OXIDATION OF PK942 STEEL WITH Ti AND Zr

被引：5

作者：

Koleznik, Mitja ^{[1
]}

Burja, Jaka ^{[2
]}

Batic, Barbara Setina ^{[2
]}

Nagode, Ales ^{[3
]}

Medved, Jozef ^{[3
]}

机构：

[1] Met Ravne Doo, Koroska Cesta 14, Ravne Na Koroskem 2390, Slovenia

[2] IMT, Lepi Pot 11, Ljubljana 1000, Slovenia

[3] Fac Nat Sci & Engn Ljubljana, Askerceva Cesta 12, Ljubljana 1000, Slovenia

来源：

MATERIALI IN TEHNOLOGIJE | 2017年 / 51卷 / 06期

关键词：

non-metallic inclusions; clean steel; de-oxidation with Ti; de-oxidation with Zr; creep resistant steel; LOW-CARBON STEEL; FE-10MASS-PERCENT-NI ALLOY; CREEP RATE; NONMETALLIC INCLUSIONS; AUSTENITE GRAIN; PARTICLES; MICROSTRUCTURE; DEOXIDATION; AL; SOLIDIFICATION;

D O I：

10.17222/mit.2017.082

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effects of titanium and zirconium additions on the non-metallic inclusions and microstructure of PK942 (X11CrNiMo12) steel were investigated. Laboratory steel charges with additions of Ti, Zr and a combination of both elements were melted. The inclusions' size, quantity, distribution and composition were analysed using optical and scanning electron microscopy (SEM). Other than the difference in delta-ferrite quantity, there are no significant differences in the microstructure. The Ti and Zr additions had a significant effect on the non-metallic inclusions, and while the addition of Ti did have an effect on the composition of inclusions, the addition of Zr also had a great effect on the size distribution and the number of non-metallic inclusions. The result of the Zr addition was a large reduction in the total non-metallic inclusion surface area. The additions of both titanium and zirconium had similar effects to the addition of Zr. Thermodynamic reactions were considered to explain the modification of the non-metallic inclusions.

引用

页码：1031 / 1036

页数：6

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