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首页> 外文期刊>Materials Science and Technology: MST: A publication of the Institute of Metals >Interdendritic microsegregation development of high-strength low-alloy steels during continuous casting process
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Interdendritic microsegregation development of high-strength low-alloy steels during continuous casting process

机译：连续铸造过程中高强度低合金钢的跨代性微量测定开发

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摘要

A 1-D model based on DICTRA software was used to simulate Mn microsegregation in high-strength low-alloy steels during continuous casting. The experimentally determined (using a cumulative profiling method) segregation results were in good agreement with the modelling results. Steels undergoing solidification via a peritectic reaction had a larger segregation range than non-peritectic steels ascribed to trapping of the alloying atoms in liquid by austenite acting as a diffusion barrier. Subsequent, post-solidification cooling through the single phase austenite field decreased the microsegregation level, although the last gamma ->alpha phase transformation did affect the segregation profile in the solute-depleted dendrite centre. Simulation indicates that segregation levels could be reduced by decreasing either secondary dendrite arm spacing or adopting faster cooling rates through solidification.
机译：基于DICTRA软件的1-D型号用于在连续铸造期间在高强度低合金钢中模拟MN微量次测量。 实验确定（使用累积分析方法）分离结果与建模结果吻合良好。 经过包层经由晶体反应凝固的钢的偏析范围比均奥氏体作用为扩散屏障捕获液体中的合金原子。 随后，通过单相奥氏体场冷却后凝固降低了微量测定水平，尽管最后γ->α相变确实影响了溶质耗尽的树突中心中的偏析轮廓。 模拟表明，通过通过凝固降低次级树枝状臂间距或采用更快的冷却速率，可以降低分离水平。

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