Manufacture of High-Nitrogen Corrosion-Resistant Steel by an Aluminothermic Method in a High-Pressure Nitrogen Atmosphere

被引：10

作者：

Dorofeev, G. A. ^{[1
]}

Karev, V. A. ^{[2
]}

Kuzminykh, E. V. ^{[1
]}

Lad'yanov, V. I. ^{[1
]}

Lubnin, A. N. ^{[1
]}

Vaulin, A. S. ^{[3
]}

Mokrushina, M. I. ^{[1
]}

机构：

[1] Russian Acad Sci, Physicotech Inst, Ural Branch, Ul Kirova 132, Izhevsk 426000, Russia

[2] Udmurt State Univ, Izhevsk 426034, Russia

[3] OOO Nitrided Mat 10, Chelyabinsk, Russia

来源：

RUSSIAN METALLURGY | 2013年 / Izdatel'stvo Nauka卷 / 01期

关键词：

Aluminothermic methods - Aluminothermic reduction - Austenitic structure - Corrosion-resistant steel - High pressure nitrogen - Synthesis parameters - Thermo dynamic analysis - Thermodynamic simulations;

D O I：

10.1134/S0036029513010047

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The conditions of aluminothermic synthesis of high-nitrogen Cr-N and Cr-Mn-N steels in a high-pressure nitrogen atmosphere are studied by thermodynamic simulation and metallurgical experiments. Thermodynamic analysis shows that the aluminothermic reduction reactions are incomplete. The most important synthesis parameter is the ratio of the aluminum to the oxygen content in a charge, and its optimum value ensures a compromise between the degree of oxide reduction, the aluminum and oxygen contents in steel (degree of deoxidation), and steel contamination by aluminum nitride. An analysis of experimental heats demonstrates good agreement between the experimental results and the data calculated by a thermodynamic model. As-cast ingots have the structure of nitrogen pearlite, and quenched ingots have an austenitic structure.

引用

页码：1 / 10

页数：10

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