Growth Kinetics of Proeutectoid Ferrite in an Fe-0.09C-1.5Mn-0.2Si Steel
Lin CHENG,Kai-ming WU,Xiang-liang WAN,Guo-hong ZHANG
The State Key Laboratory of Refractories and Metallurgy, Hubei Collaborative Innovation Center for Advanced Steels, International Research Institute for Steel Technology, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China
Growth Kinetics of Proeutectoid Ferrite in an Fe-0.09C-1.5Mn-0.2Si Steel
Lin CHENG,Kai-ming WU,Xiang-liang WAN,Guo-hong ZHANG
The State Key Laboratory of Refractories and Metallurgy, Hubei Collaborative Innovation Center for Advanced Steels, International Research Institute for Steel Technology, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China
ժҪ Growth kinetics of proeutectoid ferrite, including grain boundary face nucleated ferrite, grain boundary edge nucleated ferrite allotriomorph and intragranular ferrite idiomorph, were experimentally measured in an Fe-0.09C-1.5Mn-0.2Si steel and compared with theoretical calculation in local equilibrium and paraequilibrium modes. Grain boundary edge nucleated ferrite exhibited larger growth rate than grain boundary face nucleated ferrite and intragranular ferrite idiomorph. Experimental kinetics of proeutectoid ferrite was within the window defined by the local equilibrium and paraequilibrium limits. A transition of growth kinetics from paraequilibrium to local equilibrium was observed in the temperature range of 650-750 ��, which can be explained in terms of solute drag.
Abstract��Growth kinetics of proeutectoid ferrite, including grain boundary face nucleated ferrite, grain boundary edge nucleated ferrite allotriomorph and intragranular ferrite idiomorph, were experimentally measured in an Fe-0.09C-1.5Mn-0.2Si steel and compared with theoretical calculation in local equilibrium and paraequilibrium modes. Grain boundary edge nucleated ferrite exhibited larger growth rate than grain boundary face nucleated ferrite and intragranular ferrite idiomorph. Experimental kinetics of proeutectoid ferrite was within the window defined by the local equilibrium and paraequilibrium limits. A transition of growth kinetics from paraequilibrium to local equilibrium was observed in the temperature range of 650-750 ��, which can be explained in terms of solute drag.
��������:National Key Basic Research and Development Program of China
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E-mail: wukaiming@wust.edu.cn
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Lin CHENG,Kai-ming WU,Xiang-liang WAN,Guo-hong ZHANG. Growth Kinetics of Proeutectoid Ferrite in an Fe-0.09C-1.5Mn-0.2Si Steel[J]. �й������ڿ���, 2014, 21(10): 964-968.
Lin CHENG,Kai-ming WU,Xiang-liang WAN,Guo-hong ZHANG. Growth Kinetics of Proeutectoid Ferrite in an Fe-0.09C-1.5Mn-0.2Si Steel. Chinese Journal of Iron and Steel, 2014, 21(10): 964-968.