摘要：An investigation on thermal treatment effects on Udimet 720 Ni superalloy was performed by using neutron small angle scattering. In particular y' precipitation was considered. The sample was obtained from a turbine blade used in a generator of electricity power. The measurement was performedattheDIl in the InstituteLaue Langevinin Grenoble. The neutron wavelength wasX = 1 nm. Themicrostructuraldata were compared with those obtained by transmission electron microscopy. A satisfactory agreement appeared in the size distributions obtained by using the two techniques. The feasibility of non destructive microstructural tests was so demonstrated
