4862-PAG

Micrographs courtesy of Arijit Saha Podder. The samples were polished to a mirror finish prior to heat treatment. The thermal grooves reveal the austenite grain boundary structure.

Fe-0.4C-4Ni-2Si wt%, austenitised at 800 C for 30 min and then quenched	Fe-0.4C-4Ni-2Si wt%, austenitised at 800 C for 30 min and then quenched
Fe-0.4C-4Ni-2Si wt%, austenitised at 800 C for 30 min and then quenched	Fe-0.4C-4Ni-2Si wt%, austenitised at 800 C for 30 min and then quenched
Fe-0.4C-4Ni-2Si wt%, austenitised at 800 C for 30 min and then quenched	Fe-0.4C-4Ni-2Si wt%, austenitised at 800 C for 30 min and then quenched
Fe-0.4C-4Ni-2Si wt%, austenitised at 800 C for 30 min and then quenched	Fe-0.4C-4Ni-2Si wt%, austenitised at 800 C for 30 min and then quenched
Fe-0.4C-4Ni-2Si wt%, austenitised at 800 C for 30 min and then quenched	Fe-0.4C-4Ni-2Si wt%, austenitised at 800 C for 30 min and then quenched