SMALL-ANGLE NEUTRON-SCATTERING MICROSTRUCTURAL INVESTIGATION OF MANETSTEEL

Previous results obtained by different microstructural techniques, inc luding small-angle neutron scattering (SANS), suggested the presence o f very small microstructural inhomogeneities in modified martensitic s teel DIN 1.4914 (MANET), possibly C-Cr elementary aggregates, The pres ent paper reports SANS measurements carried out on MANET samples submi tted to various thermal treatments, aiming to check and to extend the previous results and to further characterize the microstructural featu res of this steel, Significant information is obtained by the analysis of the magnetic and nuclear components of SANS. The size distribution function of the inhomogeneities is also presented and discussed.