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PRECIPITATION IN CONTINUOUSLY CAST MICROALLOYED STEELS

机译：连续铸造微合金钢的沉淀

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High strength low alloyed steels (HSLA) are an important class of steels used for pipeline transmission applications. Precipitates of various sizes, chemistries and volume fractions have been reported in the literature for these steels. The largest of these, microns in size, form during continuous casting. Many efforts have been focused on minimizing their formation as they deplete the matrix valuable microalloying elements that can precipitate in the solid steel during subsequent controlled thermo-mechanical processing resulting in further improved steel properties. A model for microesegregation in multi-component microalloyed steels, based on the Clyne-lKurtz model coupled with Thermo-Calc software via TQ (application programming interface of Thermo-Calc), is presented. This study is focused on the effect of alloying elements on Ti- and Nb-rich particle formation as a result of microsegregation. It is shown that a reduction in Nb-rich particle segregation. during the solidification process, can be achieved.
机译：高强度低合金钢（HSLA）是用于管道传输应用的重要钢材。这些钢的文献中已经报道了各种尺寸，化学品和体积分数的沉淀物。其中最大，微米尺寸，形成在连续铸造期间。许多努力一直专注于最小化它们的形成，因为它们耗尽了在随后的受控热机械加工期间可以在固体钢中沉淀的基质有价值的微合金元件，从而得到进一步改善的钢质性能。基于Clyne-LKURTZ模型，通过TQ（Thermo-Calc的应用程序编程接口耦合的Clyne-Lkurtz模型，提供了多组分微合金钢中微量聚合金钢中的微量聚集模型。本研究重点是由于微量测定导致合金元素对富含Ti和Nb颗粒形成的影响。结果表明，富含Nb的颗粒偏析的降低。在凝固过程中，可以实现。

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