Microlevel Numerical Modeling of the Shock Wave Induced Consolidation of Metal Powders
Dynamic consolidation of powders using shock waves is a promising technique for obtaining high strength materials. It has been demonstrated experimentally that consolidated materials which retain the desirable nonequilibrium properties of the initial powder can be produced using this approach, e.g. Flinn et al.  and Korth et al. . It has been suggested by Raybould , that the consolidation process is achieved as a result of very short duration high energy deposition at particle surfaces through various mechanisms such as rapid plastic deformation and friction between particles. Because of this selective heating at particle surfaces, it is possible to obtain densification and particle bonding without subjecting the bulk material to high temperatures which create undesirable microstructural changes. To achieve a better exploitation of the dynamic consolidation technique, it will be necessary to obtain a greater understanding of the important physical mechanisms involved and the dynamic behavior of the particles during compaction.
KeywordsCompaction Work Hardening
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