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| Dynamic Recrystallization Behavior of Microalloyed Forged Steel |
| WANG Jin,CHEN Jun,ZHAO Zhen,RUAN Xue��yu |
| National Die and Mold CAD Engineering Research Center, Shanghai Jiao Tong University, Shanghai 200030, China |
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Abstract The dynamic recrystallization behavior of microalloyed forged steel was investigated with a compression test in the temperature range of 1 223-1 473 K and a strain rate of 0��01-5 s-1. Activation energy was calculated to be 305��9 kJ/mol by regression analysis. Modeling equations were developed to represent the dynamic recrystallization volume fraction and grain size. Parameters of the modeling equations were determined as a function of the Zener��Hollomon parameter. The developed modeling equation will be combined with finite element modeling to predict microstructural change during the hot forging processing.
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Received: 01 January 1900
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2008, Vol. 15 
