The comparative study of specific rigidity and yield ability of PM compact and porous materials at bending tests

摘要

The method of comparative analysis of mechanical behaviour of compact and powder beams under bending is described. The techniques to determine different normalized parameters characterizing relative properties of compact and powder beams is proposed. For high porous materials with pore-former powder the influence of porous space structure characterized by parameters m (the ratio of the pore forming material and powder particle sizes) andθ (the volume fraction of pores) on mechanical characteristics is shown.