高性能桥梁钢Q370qE-HPS过冷奥氏体连续冷却相变行为

发布时间：2019-06-16 19:20

【摘要】：利用Gleeble 1500D型数控动态热-力学物理模拟试验机,针对新近研发的Q370q E-HPS高性能桥梁钢进行了过冷奥氏体连续冷却相变行为研究。结果表明,当冷却速度小于5℃/s时,形成铁素体+珠光体组织,当冷却速度在8℃/s~15℃/s时,形成针状铁素体+贝氏体组织。Q370q E-HPS高性能桥梁钢铁素体转变温度区间为700~800℃,贝氏体转变温度区间为550~700℃,与传统正火工艺桥梁钢Q370q E相比较,Q370q E-HPS钢转变开始温度高。Q370q E-HPS钢两阶段变形后的冷速≤5℃/s时形成均匀细小的铁素体+珠光体组织,可作为控冷阶段的参考冷速。
[Abstract]:The continuous cooling transformation behavior of supercooled Austenite for newly developed Q370q E-HPS high performance bridge steel was studied by using Gleeble 1500D numerical control dynamic thermomechanical physical simulation tester. The results show that when the cooling rate is less than 5 鈩，

本文编号：2500774