摘要
通过热模拟试验对高强船板钢EH47在连续冷却条件下的相变行为以及显微组织演变进行了研究。研究结果表明:冷却速度增加,可以加快高强船板钢EH47铁素体和贝氏体转变,抑制珠光体转变。随着冷却速度增加,铁素体含量减少,贝氏体含量增加,几乎不存在珠光体组织;同时随着冷却速度增加,显微组织变得越来越细小均匀,EH47钢硬度增加。通过对比研究高强船板钢EH47不同冷却速度下的硬度值可以发现,变形提高了加工硬化程度,在冷却速度相同的情况下,变形EH47钢的硬度较未变形EH47钢的硬度有所增加,但增加幅度不大。
The continuous cooling transformation behavior and microstructure evolution of high strength shipboard steel EH47 were studied by thermal simulation experiment.The results show that the increase of cooling rate can accelerate ferrite and bainite transformation but restrain pearlite transformation of the steel.With the increase of cooling rate,the percentage of ferrite decreases while the percentage of bainite increases,meanwhile,almost no pearlite is produced.At the same time,with the increase of cooling rate,the microstructure becomes more uniform and finer,and the hardness increases.By comparing and studying the hardness values of the steel at different cooling rates,it can be found that deformation increases the degree of work hardening.Under the same cooling rate,the hardness of the deformed EH47 steel is higher compared with that of the undeformed,though it is not significant.
作者
朱阳阳
张红梅
王渐灵
李岩
李娜
姜正义
Zhu Yangyang;Zhang Hongmei;Wang Jianling;Li Yan;Li Na;Jiang Zhengyi(School of Materials and Metallurgy,University of Science and Technology Liaoning,Anshan Liaoning 114051,China;State Key Laboratory of Metal Material for Marine Equipment and Application,Anshan Liaoning 114009,China;Anshan Steel Group Chaoyang Steel Co.,Ltd.,Chaoyang Liaoning122000,China)
出处
《金属热处理》
CAS
CSCD
北大核心
2019年第9期42-45,共4页
Heat Treatment of Metals
基金
辽宁省自然科学基金指导计划(20180550952)
辽宁科技大学与海工钢国家重点实验室联合项目(SKLMEA-USTL 2017010)
关键词
高强船板钢EH47
连续冷却相变
显微组织
显微硬度
high strength shipboard steel EH47
continuous cooling transformation
microstructure
microhardness
