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.

 
  • 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;
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