Nonuniform structure and properties in hot-rolled low-carbon steel coils

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• 作者：L. M. Kaputkina (1)
  A. V. Marmulev (1) (2)
  I. V. Shchetinin (1)
  G. Herman (2)
  E. I. Polyak (2)
  
• 关键词：high ; strength auto ; plant steel strip ; hot rolling ; phase transformations ; thickness variation ; structure and texture inheritance
• 刊名：Steel in Translation
• 出版年：2013
• 出版时间：September 2013
• 年：2013
• 卷：43
• 期：9
• 页码：561-565
• 全文大小：1,070 KB
• 作者单位：L. M. Kaputkina (1)
  A. V. Marmulev (1) (2)
  I. V. Shchetinin (1)
  G. Herman (2)
  E. I. Polyak (2)
  
  1. Moscow Institute of Steel and Alloys, Moscow, Russia
  2. ArcelorMittal Research Center, Moscow, Russia
  
• ISSN：1935-0988

文摘

The austenite phase transitions in the industrial production of hot-rolled steel coils are studied magnetometrically. Nonuniformity of the structure and mechanical properties of low-carbon steel strip over its length and width may be attributed to incomplete phase transitions in the strip on the output roller conveyer and nonuniformity of the subsequent coil cooling in regular production conditions. Inheritance of the structural inhomogeneity formed after hot rolling may be responsible for the thickness variation observed after cold rolling of the strip. Recommendations are made for reducing or eliminating the structural inhomogeneity so as to improve product quality.