INVESTIGATION ON DIFFUSION OF CARBON ATOMS AND STABILITY OF DEFORMATION INDUCED FERRITE IN A LOW CARBON STEEL

Acta Metall Sin

2007, Vol. 43

Issue (3): 286-290 DOI:

Research Articles

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INVESTIGATION ON DIFFUSION OF CARBON ATOMS AND STABILITY OF DEFORMATION INDUCED FERRITE IN A LOW CARBON STEEL

ZHAO Heshan; LI Dianzhong; LIU Zhaoxia; LI Yiyi

Institute of Metal Research; Chinese Academy of Sciences; Shenyang 110016

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ZHAO Heshan; LI Dianzhong; LIU Zhaoxia; LI Yiyi. INVESTIGATION ON DIFFUSION OF CARBON ATOMS AND STABILITY OF DEFORMATION INDUCED FERRITE IN A LOW CARBON STEEL. Acta Metall Sin, 2007, 43(3): 286-290 .

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Abstract A series of Deformation Induced Ferrite Transformation (DIFT) tests are investigated by using Gleeble-3500 hot simulation test machine. The time-stress curve shows that the time of transformation is so short that the diffusion of carbon atoms is not sufficient; the results of EPM (Electron Probe Micro Analyzer) also show that the carbon concentration of DIF (Deformed Induced Ferrite) is far higher than that of conventional ferrite, which combining with the SEM observation indicates that DIF is a kind of transitional phase in quasi-stable state. Therefore, DIF will precipitate the super-saturated carbon from the inner grain and finally transformed to stable ferrite phase during the process of tempering and its hardness will decrease simultaneously.

Key words: deformation induced transformation low carbon steel

Received: 30 August 2006

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TG111.6

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	ZHAO Heshan
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