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《Journal of Northeastern University(Natural Science)》 2011-01
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Effect of Ultra Fast Cooling on Microstructure and Mechanical Properties of Medium Carbon Steels

WANG Bin,ZHOU Xiao-guang,LIU Zhen-yu,WANG Guo-dong(The State Key Laboratory of Rolling and Automation,Northeastern University,Shenyang 110819,China.)  
The microstructure and mechanical properties of a certain grade of medium carbon steel were investigated systematically in different controlled cooling processes using the ultra fast cooler provided at the finish rolling exit.It was found that such an ultra fast cooling process can restrain the formation of pro-eutectoid ferrite,and destroy its initial network distribution and minimize the laminar spacing of pearlite obviously.The strength of specimens and their impact toughness at room temperature both increase with the decreasing ultra fast cooling temperature.So,implementing the ultra fast cooling process as just ending the high temperature finish rolling can improve greatly the mechanical properties of specimens and avoid the overloading due to low-temperature hot rolling so as to improve the rhythm of rolling production
【Fund】: 国家自然科学基金资助项目(51004037);; 中央高校基本科研业务费专项资金资助项目(N090307002)
【CateGory Index】: TG335.55
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