本文建立了钢凝固过程包含δ/γ相变化以及MnS夹杂析出的溶质微观偏析模型。分析了钢种成分、MnS夹杂物析出以及冷却速率对钢凝固过程高温力学性能的影响，模型计算结果与文献报道的实测零强度温度(ZST)和零塑性温度(ZDT)温度吻合良好。
A mathematical model of solute microsegregation, which takes both the delta-ferrite/gamma-austenite phase transformation and MnS inclusion precipitation during the continuous casting process of steel into consideration, is developed. The effects of steel composition, MnS inclusion precipitation and cooling rate on high temperature mechanical properties of steel are all analyzed. The model results were extensively compared with experimental data of zero strength temperature (ZST) and zero ductility temperature (ZDT) that reported in the literature. In general, a good agreement between calculated and measured results was verified.
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