采用热/力模拟实验方法研究了00Cr25Ni7Mo4N超级双相不锈钢(SDSS)在900～1 200℃、应变速率为0.1～10 s-1条件下的热变形及组织变化,讨论了热变形参数对流变应力和显微组织的影响.结果表明,在上述变形条件下,00Cr25Ni7Mo4N超级双相不锈钢中铁素体的软化机制与Z参数有关,且随着Z参数减小,铁素体软化机制由动态回复向动态再结晶转变;该钢的表观应力指数为3.51,热变形表观激活能为492 kJ/mol.
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