Structural Features of Cold-Pressed Heterogeneous Powder Materials Based on a Ductile Matrix and Rigid Inclusions


I. M. Frantsevich Institute for Problems of Materials Science of the NAS of Ukraine, Omeliana Pritsaka str.,3, Kyiv, 03142, Ukraine
Powder Metallurgy - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2016, #09/10


The paper proposes the principles for controlling the microstructural parameters of cold-pressed heterogeneous Cu–W materials to achieve technological strength and high energy reserve of powder for compacts. It is found that decrease in the matrix–inclusion particle size increases the density of heterogeneous compacts. It is shown that the theory of controlling the microstructure of porous bodies can be applied to evaluate the structure-sensitive properties of the test materials using calculation of the composite matricity parameter. The effectiveness of this approach to predict the technological strength of compacts is demonstrated. The principles of achieving the technological strength of green heterogeneous powder compacts by considering the ratio of the particle size of the mixture components, volume fraction of the particles, and the size of inclusions are addressed.