热冲压快速冷却工艺对22MnB5钢组织与性能的影响

发布时间：2018-02-08 08:37

  本文关键词： 热冲压 MnB钢 快速冷却工艺(RCP) 冷却速率 硬度指数模型　出处：《金属热处理》2015年01期 　论文类型：期刊论文

【摘要】：基于RCP(Rapid Cooling Process)快速冷却工艺+不同模具淬火热处理工艺,对22Mn B5钢板材的淬火力学性能及微观组织进行了研究,探讨了冷速、强度硬度之间的关系,建立了三者之间的硬度指数模型。结果表明,采用加入淬火前快速冷却及改变不同模具淬火温度可以有效实现梯度冷却速率控制,冷却速率实现了从6~40℃/s的变化,微观组织从铁素体与珠光体、上、下贝氏体逐渐向"残留奥氏体+马氏体"组织过渡,对应的强度区间范围为700~1600 MPa。建立的冷速、强度硬度模型与试验数据拟合良好。
[Abstract]:Based on the rapid cooling process of RCP(Rapid Cooling process, the quenching mechanical properties and microstructure of 22MnB5 steel sheet were studied in different die quenching and heat treatment processes, and the relationship between cooling rate and strength and hardness was discussed. The hardness index model between them is established. The results show that the gradient cooling rate can be controlled effectively by using rapid cooling before quenching and changing the quenching temperature of different die, and the cooling rate can be changed from 60 鈩，

本文编号：1495043