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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：管状钢化学成分对计算机模拟连续铸坯凝固过程中相成分形成特征的研究

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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：本文介绍了在用于生产无缝管生产的低碳预覆膜和包层的连续铸造坯料的凝固和冷却过程中建模主相成分和碳化物相的特征的结果。由于使用软件系统事实鼠尾草的计算结果，发现碳含量为0.04％至0.20％，当钒和碳化铌元件被引入质量分数的碳化物形成元素的组成时达0.08％，改变发生不同温度范围的钢相组成。提出了通过将钢转移到预晶类的Δ-铁素体的含量和结晶间隔的缩小部分中的正动力学。已经建立了具有不同化学组成的钢中碳化物和碳 - 氮化物相的温度间隔。具有锰 - 钒/锰 - 钒 - 铌和钢与锰 - 硅合金化系统的钢对比研究表明，由于形成高 - 1200-800°C温度范围内的碳氮化物相分离差异显着差异温度成分。

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