Investigation by Mössbauer spectroscopy and small angle neutron scattering of the precipitation process in Fe76 Mn12.5 Co8.5 Mo3

Additional informations to microhardness tests, small angle neutron scattering experiments and transmission electron microscopy observations have been obtained by Massbauer spectroscopy about the various precipitation steps occurring during 700 K ageing of a model maraging alloy 76-Fe 12.5-Mn 8.5-Co 3.-Mo (% at).Up to 128 h, three stages are revealed both by the hyperfine parameter perturbations of the b.c.c.matrix and the precipitate behaviour.The results are discussed in correlation with those from the other techniques.