Influence of the grain shape and their preferred orientation on the achievable density and strength of powder billets

Abstract

The achievable density of the workpieces under all-round static compression of the compacting iron powder is analyzed. The schemes of forming billets with a shift of powder particles are described, including during magnetic-pulse processing of the powder and the billet being formed. A mathematical model of the orientation of iron powder particles in cylindrical billets molded with intense shears between the particles is presented. Rational angles of orientation of particles are recommended in the manufacture of cylindrical parts with uniformly distributed properties in the cross section or with the greatest strength near the outer surface.