Acta Metallurgica Sinica (English Letters) ›› 1991, Vol. 4 ›› Issue (2): 139-142.

• Research paper • Previous Articles     Next Articles

KINETICS OF PHASE TRANSFORMATION FOR DEFORMED AUSTENITE TO PROEUTECTOID FERRITE

LI Jian SUN Fuyu Central Iron and Steel Research Institute,Beijing,China Engineer,Department No.4,Central Iron and Steel Research Institute,Ministry of Metallurgical Industry,Beijing 100081,China   

  • Received:1991-04-25 Revised:1991-04-25 Online:1991-04-25 Published:2009-10-10

Abstract: The volume fraction of proeutectoid ferrite transformed from deformed austenite fv as a func- tion of isothermal time t has been investigated in 0.037% Nb microalloyed steel.The results show that lnln(1-fv)~(-1) vs Int relation does not follow the Avrami equation strictly and con- sists of two straight lines.By comparing the differences between the results and Cahn's theory, the authors' idea has been expounded.

Key words: austenite deformation, ferrite, kinetics