Abstract：The carbon partitioning behavior and its effect on martensite and retained austenite of Fe-0.24C-0.3Si-1.0Mn-0.56Cr-0.17Mo（mass prcent，%）steel during coolling processes after hot punching were investigated by using fully autodilatometer Formastor-FⅡ. The microstructure characterization was carried out by means of scanning electron microscopy and transmission electron microscopy，and the austenite fraction measurement was determined by X-ray diffraction and electron back scattered diffraction. The results show that martensite and retained austenite were obtained in different cooling processes after hot punching. Using direct fast cooling process after hot punching，the martensite lath was relatively confused and shorter and the amount of retained austenite was less. While using slow cooling process in the end，the martensite lath was longer. It’s found that the carbon partition occurred in the slow cooling process. More retained austenite distributed among the martensite lath and formed thin films. High density dislocation distributed within martensite lath.
刘艳林. 一种Fe-C-Si-Mn-Cr-Mo钢碳配分行为对组织的影响[J]. 钢铁, 2016, 51(4): 53-58.
LIU Yan-lin. Effect of carbon partitioning behavior on microstructure in a kind of Fe-C-Si-Mn-Cr-Mo steel. Iron and Steel, 2016, 51(4): 53-58.
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2016, Vol. 51 
