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| Effect of cooling model on slab structure and internal crack of 0.1%C-5%Mn steel |
| TAO Hong-biao，ZHANG Hui，FAN Yi，WANG Ming-lin，MA Zhong-wei，ZHAO Pei |
| （National Engineering and Research Center of Continuous Casting Technology， Central Iron and Steel Research Insititute， Beijing 100081， China） |
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Abstract In order to reveal formation mechanism of slab internal crack of the 0.1%C-5%Mn steel， structure and crack feature of this steel have been researched under different cooling models by using methods such as physical test， metallographic examination etc and designing heat simulation experiment. The results show that a lot of martensite and crack appeared in the slab when the cooling intensity was high.The higher the cooling intensity， the more martensite phase had and the greater the crack width. By using soft cooling or hot charging process， the martensite transformation caused by rapid cooling could be prevented and granular bainite structure could be formed， which could control appearance and extension of the internal crack.
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Received: 28 July 2014
Published: 13 April 2015
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| [2] |
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| [3] |
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| [4] |
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| [5] |
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| [6] |
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2015, Vol. 50 
