Communications: on the orientation relationships between retained austenite and lath martensite

The orientation relationships between retained austenite and lath marteniste transformation are reported. Direct crystallographic analysis using retained austenite ceveals that the dominant austenite-martensite (lath) orientation relation in medium carbon experimental steels corresponds to either Kurdjumov-Sachs (K-S) or Nishiyama-Wasserman (N-W) relationships depending on the composition.