P3 = Fe-3.0Mn-3.0C (at.%), Fe-3.0Mn-0.7C (wt.%) P7 = Fe-6.9Mn-3.2C (at.%) Fe-7.0Mn-0.7C (wt.%)

Fig. 3a: Scanning electron microscopy micrograph P3 (pearlite condition, 600 °C/16 h) Fig. 3b: Scanning electron microscopy micrograph P7 (pearlite condition, 540 °C/96 h) Fig. 4a: Transmission electron microscopy micrograph, bright field P3 (pearlite condition, 600 °C/16 h) Fig. 4b: Transmission electron microscopy diffraction pattern P3 (pearlite condition, 600 °C/16 h) Fig. 4c: Transmission electron microscopy micrograph, bright field P7 (pearlite condition, 540 °C/96 h) Fig. 4d: Transmission electron microscopy diffraction pattern P7 (pearlite condition, 540 °C/96 h) Fig. 5a: Atom probe tomography data as Cameca proprietary raw files P3 (pearlite condition, 600 °C/16 h) Fig. 5b: Atom probe tomography data as Cameca proprietary raw files P7 (pearlite condition, 540 °C/96 h) Fig. 7a: Scanning electron microscopy micrograph P3 (short time austenitization and quenching, 770 °C/150 s) Fig. 7b: Scanning electron microscopy micrograph P7 (short time austenitization and quenching, 770 °C/150 s)