30Mn27Al4V无磁钢的热变形规律  

Research on hot deformation behavior of 30Mn27Al4V non-magnetic steel

作　　者：马彪[1] 韩文龙[1] 李涛[1] 李长生[1] 

机构地区：[1]东北大学轧制技术及连轧自动化国家重点实验室,沈阳110819

出　　处：《塑性工程学报》2012年第2期66-69,共4页Journal of Plasticity Engineering

基　　金：国家自然科学基金资助项目(51174057;50534020)

摘　　要：采用MMS-300热/力模拟实验机,研究30Mn27Al4V无磁钢在变形温度900℃～1150℃、应变速率0.1s-1～10s-1条件下的热变形规律。结果表明,在热变形过程中,当变形温度为1000℃～1150℃、应变速率为0.1s-1～10s-1条件下,实验用钢均发生明显的动态再结晶。确定变形激活能为503.7kJ/mol以及Z参数,得到了30Mn27Al4V无磁钢的高温流变应力本构方程。根据实验数据回归,建立了该钢的高温塑性变形抗力数学模型。The hot deformation behavior of 30Mn27Al4V non-magnetic steel at the strain rates of 0.1s-1~10s-1 and deformation temperatures of 900℃~1150℃ was studied by MMS-300 thermomechanical simulator.The results show that full dynamic recrystallization occurs at the strain rates of 0.1s-1~10s-1 and deformation temperatures of 1000℃~1150℃.The activation energy of the steel is 503.7kJ/mol for hot deformation.The Zener-Hollomon parameter was obtained.The constitutive equation and mathematic model of deformation resistance were also established.

关 键 词：无磁钢 热变形 变形抗力模型 本构方程 

分 类 号：TG142.1[一般工业技术—材料科学与工程]