An Evaluation of High Performance Materials Processed Using Warm Compaction Technology

摘要

Microstructure, porosity size, morphology and distribution directly influence the mechanical properties of P/M products. Overall properties can be improved by increasing the density while specific mechanical properties can be increased with alloying additions. This can be seen by the excellent properties achieved for high performance applications with material compositions based on diffusion bonded and prealloyed low-alloy steel powders processed to high densities. These densities, which are in excess of 7.3 g/cm~3, have been achieved through various methods. One method utilizes a new warm compaction technology that provides greater than a 7.3 g/cm~3 green density in a single compaction step. This paper presents the results of work performed with these materials coupled with the new warm compaction process. The results indicate that the material composition and processing route can provide the necessary properties for demanding applications.