Determination of the PLE/NPLE transition boundary in the Fe-C-Si system: application to ferrite growing in bull-eye structure in spheroidal graphite cast irons under continuous cooling conditions

LAURA N. GARCÍA; FERNANDO DIEGO CARAZO

Querétaro

Congreso; INTERNATIONAL CONFERENCE ON COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY; 2018

Material Science & Engineering Texas A&M University - CIDESI - CIATEQ - CIMAN

The ferrite growth in SG cast irons is expected to take place at temperatures lower than T_α, when C_α/γ−C_α/G turns to positive values. Nevertheless, once the alloy reaches T_αo it could grow driven by C_γ/α−C_γ. In spite of the presence of C_γ/α−C_γ at temperatures lower than T_αo, no ferrite growth is evidenced for intermediate temperatures between T_αo and T_α under continuous cooling conditions.