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中文摘要：
建立了热轧低碳Si～Mn系TRIP钢相变动力学模型。将该模型用于模拟热轧TRIP钢分段冷却过程中显微组织的演变，并定量分析了热变形和冷却速率对热变形奥氏体相变行为的影响。结果表明，预测值与实测值符合较好；降低终轧温度、提高终轧变形量，延长两相区缓冷时间都能促进铁素体相变，从而有利于提高残余奥氏体中的碳含量。
英文摘要：
A novel mathematical model has been developed to simulate the transformation behaviour in hot rolled Si- Mn TRIP steel, and the simulated results of transformation during step cooling are in good agreement with the hot rolling experiments. The influences of hot working and cooling process parameters on microstructure evolution during cooling were analyzed. The results show that reducing the finishing temperature, enhancing the deforma- tion degree or increasing the slow cooling time in α/γ region can all accelerate the ferrite transformation, which will promote the carbon enrichment in residual austenite.
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