MATERIAL REFORMATION UNDER SHOCK WAVE LOADING IN CONTACT AND NON-CONTACT GEOMETRY

Shock waves when propagate through the materials produce new phases/transformations. Because of the short duration of the shock wave pulse, the explosive energy turns out to be invigorating with insuperable power when used in a more convenable, advantageous and efficacious manner. The paper describes the experimental techniques used to synthesize the newer materials under shock wave loading and their characterization by spectroscopic methods. In contact arrangement shock wave loading of the particulate material, the starting sample with specific volume has been compressed by means of dynamic pressure to a smaller volume. Whereas the non-contact arrangement involves a method for compaction of a particulate material into an article of intricate configuration. The arrangement used in the latter case is a die pellet assembly. By using these two techniques, mechanical mixtures of super alloy powders of IN 718 have been transformed to study the effect of particle morphology and grain orientation for specific applications in material science and space Physics.