在Gleeble-3500热/力模拟试验机上,采用双道次压缩试验研究了0.15C-0.14Si-0.2Mn-0.04Nb钢在高温压缩变形后的静态软化行为,分析了道次停留时间、变形温度、应变速率以及应变量对静态再结晶行为的影响.并通过2%应力补偿法结合流变应力曲线计算出了静态再结晶软化率.研究表明,在其他条件不变的情况下,再结晶软化率随着道次停留时间的延长、变形温度的升高、应变速率的增大以及变形量的增大而增大.还建立了试验钢的静态再结晶动力学模型,获得静态再结晶激活能为188.986 kJ/mol.
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