J Mater Sci Technol ›› 1998, Vol. 14 ›› Issue (4): 380-382.

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Thermodynamic Calculation of A_(r3) Temperature inLow Alloy Steels

Jinbo QU; Zhenyu LIU; Xianghua LIU and Guodong WANG (State Key Lab. of Rolling and Automation, Northeatern University Shenyang 110006, China)   

  • Received:1998-07-28 Revised:1998-07-28 Online:1998-07-28 Published:2009-10-10

Abstract: On the basis of superelement model, Cahn's transformation kinetics theory and Scheil's additivity rule, actual γ/α transformation start temperature, A.3 in Fe-Σ Xi-C (Xi=Mn, Si, Ni, Mo etc.)multi-component low alloy Steels during continuous cooling process was calculated. Influences of chemical composition, hot deformation of γ and cooling rate on Ar3 temperature were analyzed. Calculated Ar3 temperatures are in reasonable agreement with measured ones.