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在Gleeble-1500热模拟试验机上对非调质钢49MnVS3进行双道次压缩试验,研究其静态再结晶行为。采用0.2%补偿法计算了静态再结晶体积分数,分析工艺参数对静态再结晶行为的影响,建立了静态再结晶动力学模型。在Gleeble-1500热模拟试验机上对非调质钢49MnVS3进行一次与双道次压缩工艺参数相同的单道次压缩试验。对试样进行金相分析建立了静态再结晶晶粒尺寸模型。结果显示,模型的预测值与试验值吻合较好,可为优化生产工艺参数提供理论依据。
The non-tempered steel 49MnVS3 was subjected to two-pass compression tests on a Gleeble-1500 thermal simulator to study its static recrystallization behavior. The static recrystallization volume fraction was calculated by 0.2% compensation method, and the influence of technological parameters on the static recrystallization behavior was analyzed. A static recrystallization kinetic model was established. A single pass compression test on the Gleeble-1500 thermal simulator was performed on the non-quenched and tempered steel 49MnVS3 with the same two-pass compression process. The static recrystallization grain size model was established by metallographic analysis of the sample. The results show that the predicted value of the model is in good agreement with the experimental value, which can provide a theoretical basis for optimizing the production process parameters.