Literature data on Youngs modulus of sintered steels are discordant. MPIF Standards dont allow canceling uncertainties. It seems quite sure that E is a grooving function of materials density and sintering, defined, e.g., by a Larson-Miller parameter. Differences have been observed between Young moduli for very small or sensible deformations. An experimental study has been made to reveal possible differences attributable to the angle between compaction axis and main axis of test probes, obtained by WEM, from cylindrical blanks of Fe-Mo-C alloy, sintered at 3 different temperature and time. The resonant frequency method has been applied.
The analysis of the results shows that E increases versus sintering intensity, at least up to a certain threshold, depending on probe orientation. Pore morphology and crystal texture dont explain the observed dif-ferences.
A model of porosity shape, orientation, and relative elongation has been proposed. The developments based on the model imply some differences of elastic behavior, depending on the direction of stressing axis.