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《Journal of Iron and Steel Research》 2011-10
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Oxide Scales Control of Hot-Rolled Automotive Frame Steel

CAO Guang-ming,SUN Bin,LI Cheng-gang,LIU Zhen-yu(The State Key Laboratory of Rolling and Automation,Northeastern University,Shenyang 110006,Liaoning,China)  
The structure and evolution rules of oxide scales during hot strip rolling were discussed.The proeutectoid and eutectoid transformation behaviors of FeO were discussed in terms of thermodynamics and oxygen depletion or enrichment in FeO.The isothermal transformation of FeO was divided into two stages,or the occurrence of proeutectoid precipitation of Fe3O4 followed by the eutectoid transformation of FeO→Fe+Fe3O4.The eutectic reaction kinetics from FeO can be controlled by changing coiling temperature,and the oxide structures can be controlled.The results of hot rolling trials show that the content of Fe3O4 is above 80% and the thickness of oxide scales is between 8 and 11 μm,the results of cold bending trial show that the adhesion between oxide scale and substrate is good.
【Fund】: 中央高校基本科研业务青年教师科研启动基金资助项目(N100307006)
【CateGory Index】: TG335.11
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【Co-citations】
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