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首页> 外文期刊>Materials science forum >Investigation of the Influence of the Chemical Composition of Tubular Steels on the Features of the Formation of Phase Constituents During the Solidification of Continuously Cast Billets by Computer Simulation
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Investigation of the Influence of the Chemical Composition of Tubular Steels on the Features of the Formation of Phase Constituents During the Solidification of Continuously Cast Billets by Computer Simulation

机译：用计算机模拟研究管坯化学成分对连铸坯凝固过程中相成分形成特征的影响

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摘要

The paper presents the results of modeling the features of the formation of the main phase constituents and carbide phases during solidification and cooling of a continuously cast billet from low carbon pre-peritectic and peritectic steels used for the production of seamless pipes. As a result of calculation using the software system Fact Sage, it was found that with a carbon content in the range from 0.04% to 0.20%, and when vanadium and niobium carbide elements are introduced into the composition of carbide-forming elements of mass fraction to 0.08%, a change occurs phase composition of steels in different temperature ranges. Positive dynamics in the part of increasing the content of δ-ferrite and narrowing of the crystallization interval by transferring steel to the pre-peritectic class are noted. The temperature intervals for the separation of carbide and carbon-nitride phases in steels with different chemical compositions have been established. A comparative study of steels with manganese-vanadium / manganese-vanadium-niobium and steels with a manganese-silicon alloying system showed a significant difference in the separation of carbonitride phases in the temperature range 1200-800 ° C due to the formation of high-temperature constituents.
机译：本文介绍了对用于生产无缝管的低碳预包晶和包晶钢连续铸造坯料的凝固和冷却过程中主要相成分和碳化物相形成特征进行建模的结果。作为使用软件系统Fact Sage进行计算的结果，发现碳含量在0.04％至0.20％的范围内，并且当将钒和铌碳化物元素引入质量分数为碳化物的元素组成中时到0.08％，在不同温度范围内钢的相组成会发生变化。通过将钢转移到包晶前的类中，增加了δ-铁素体含量并缩小了结晶间隔，这是积极的。已经确定了化学成分不同的钢中碳化物相和碳氮化物相分离的温度间隔。对含锰-钒/锰-钒-铌的钢和含锰-硅合金化系统的钢进行的比较研究表明，由于形成了高碳钢，在1200-800°C的温度范围内碳氮化物相的分离存在显着差异。温度成分。

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