集装箱板冷弯表面微裂纹的成因  

Mechanism of Microcrack Formation on Container Plate in Cold Bending Test

作　　者：马鸣图[1] 李殿中[2] 陈贵江 李志刚[1] 黄承江[2] 许传芬 

机构地区：[1]重庆汽车研究所,重庆400039 [2]中国科学院金属研究所,辽宁沈阳110016 [3]广州珠江钢铁公司,广东广州510730

出　　处：《机械工程材料》2004年第4期1-3,44,共4页Materials For Mechanical Engineering

基　　金：国家"973"新一代钢铁材料重大基础研究资助项目(G192806150X)

摘　　要：对集装箱板冷弯时表面微裂纹的成因进行分析。结果表明:轧制表面层的粗晶、混晶和沿轧向的分层是引起表面微裂纹的重要原因,而氧与氮含量较高对冷弯性能有不利影响;并提出了改变轧制变形量、加大轧制后冷却速度的改进工艺和方法。The mechanism of surface microcrack formation on container plate in cold bending tests was analysed.The microstructure was observed.The results show that the surface microcrack formation on container plate was mainly related to the gross grain and mixed grain in the surface of plate.Improving production technology and method to avoid microcrack formation are suggested.

关 键 词：集装箱板 冷弯 表面微裂纹 粗晶和混晶 

分 类 号：TG142.41[一般工业技术—材料科学与工程]