1. School of Metallurgy and Ecology, University of Science and Technology Beijing, Beijing 100083, China; 2. Technology Center of Baosteel, Shanghai 201900, China
Abstract:The surface transverse cracks on AISI304 strip produced by twinroll strip casting were studied using optical microscopic observation and colored metallographic analysis,with consideration of the near rapid solidification characteristics of strip casting.The results indicated that the surface transverse cracks are formed during solidification. The prime reason of cracking is closely related to difference in solidification rate, of the surface,caused by level fluctuation in molten steel pool, cold scars and surface defects of rolls and so on. The tensile stress induced during subsequent cooling and coiling is the main reason for transverse crack expansion.
黄福祥;张炯明;王新华;方园;于艳. 双辊薄带连铸304不锈钢铸带表面横裂纹成因研究[J]. 钢铁, 2008, 43(2): 47-0.
HUANG Fuxiang;ZHANG Jiongming;WANG Xinhua;FANG Yuan;YU Yan. Study of Surface Transverse Cracks on 304 Strip Produced by TwinRoll Strip Casting. Iron and Steel, 2008, 43(2): 47-0.