摘要
根据水电站压力钢管及蜗壳用钢特点,通过化学成分设计,以及冶炼、水冷模浇铸、轧制、热处理工艺的设计,开发出具有低碳（不大于0.09%）、低碳当量（不大于0.52%）、低焊接裂纹敏感性指数（不大于0.25%）和良好低温冲击韧性的780MPa级Q690CFE钢板,其微观组织为索氏体＋贝氏体回火组织。
According to the characteristics of steel pipe and spiral case of hydropower station,the 780 MPa grade high strength steel plate was developed with low carbon content（no more than 0.09%）,low carbon equivalent（no more than 0.52%）,low welding crack sensitivity（no more than 0.52%）,and good low temperature impact toughness.This Q690CFE plate had the microstructure of sorbite and tempered bainite.
作者
唐郑磊
许少普
彭帅
李忠波
张占杰
黄记杨
TANG Zheng-lei;XU Shao-pu;PENG Shuai;LI Zhong-bo;ZHANG Zhan-jie;HUANG Ji-yang(Metallurgical and Ecological Engineering School,University of Science and Technology Beijing,Beijing 100083,China;Iron and Steel Research Institute,Nanyang Hanye Special Iron and Steel Co.,Ltd.,Nanyang 474500,China;Wudongde Project Construction Department,China Three Gorges Construction Management Co.,Ltd.,Kunming 650000,China)
出处
《轧钢》
2018年第4期76-80,共5页
Steel Rolling
关键词
Q690CFE钢板
化学成分设计
水冷模
热处理
力学性能
显微组织
Q690CFE steel plate
chemical composition design
water cooling mold
heat treatment
mechanical property
micro-structure
