Rapid High Pressure Combustion Driven Powder Consolidation for the Development of Reactive Fragments and their Dynamic Properties

We propose in Phase II effort to continue and further optimize and scale up to fabricate the large diameter fragmenting test cylinders/complex geometries using innovative and Cost-effective Combustion Driven Rapid Powder Compaction Manufacturing as a follow-up of the successful development and materials properties/reactivity up to 6000 ft/s of CDC compacted reactive fragment materials from the Phase I efforts. CDC compaction process optimization is planned to develop additional materials properties, advanced alloy development with enhanced reactivities than equivalent steels, scaling up to fabricate for larger/complex geometries of reactivity test cylinders of various sizes of OD and wall thicknesses as per the sponsor's (OSD-ONR-NSWC) needs. Small and medium scale spheres/cylinders also will be developed for preliminary screening for materials behavior and reactivities. Advanced alloys proposed include combonations of Zr-Zn-W and other addvanced alloys,and mechanical, microstructural and microchemistry will be correlated with CDC compaction/post-process conditions based on select geometry and CDC materials properties. Potential alloying include tungsten, W-Ni-Fe, W, W/Zr/Zn, Nanomaterials of aluminum, Iron, Copper etc as examples) and reactivity enhancing materials in small concentrations such as nanoAluminum or Cryomilled Al-Zr-Zn alloys with Zr-Zn-W to obtain reactivities as a proof of concept and extend for other alloys in Phase II. Phase II option will be focused on the most promising alloys for specific needs from OSD sponsors/ potential industry end users such as NSWC,ATK, Aerojet or General dynamics etc, for their commercial applications.