周雯,吴开明,王厚昕,郭爱民,邹德辉,李书瑞

• 1:武汉科技大学国际钢铁研究院
• 2:中信微合金化技术中心
• 3:武汉钢铁(集团)公司研究院

摘要(Abstract)：

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。

关键词(KeyWords)： 桥梁钢;Q370qE-HPS;正火Q370qE钢;连续冷却相变

Abstract:

Keywords:

基金项目(Foundation): CITIC-CBMM铌钢研究与开发基金(2014-D078-1)

作者(Author): 周雯,吴开明,王厚昕,郭爱民,邹德辉,李书瑞

DOI: 10.13289/j.issn.1009-6264.2015.s2.017

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