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材料工程  2015 

利用控轧控冷技术开发热轧不锈钢复合板的实验研究

DOI: 10.11868/j.issn.1001-4381.2015.07.011, PP. 62-67

Keywords: 控制轧制控制冷却,连线转变曲线,不锈钢复合板,力学性能

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Abstract:

使用Gleeble-3500热模拟试验机研究了Q345R的奥氏体连续冷却相变(CCT)行为,利用二辊可逆试验轧机进行了系列控制轧制控制冷却(TMCP)实验,开发出了不锈钢(316)/低碳钢(Q345R)复合板.较合理的工艺为在奥氏体再结晶区进行轧制,终轧温度为1000~1050℃,总压下量为75%,轧后以0.2~7℃/s的速率冷却至450℃以下后空冷,随冷却速率的增加,Q345R钢板的显微组织从铁素体(F)+珠光体(P)向铁素体(F)+贝氏体(B)过渡,屈服强度范围330~430MPa,抗拉强度范围为535~595MPa,0℃的冲击吸收功高于50J;复合板界面结合强度大于350MPa,抗弯性能合格.

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