Application of High Strength Filament Reinforced Metal Matrix Composites to Advanced Rapid Fire and High Temperature Barrels.

摘要

The feasibility of using high temperature - high strength filament reinforced metal matrix composites to meet the pressure-temperature requirements of 30mm XM140 barrel was evaluated. The technology of the fabrication of metal matrix composite cylinders, involving sequentially filament winding - plasma spraying of the matrix-grinding-winding followed by isostatic densification was developed. New materials including composites of steel wire-bronze, steel wire-316SS TZM wire-316SS were synthesized. The room temperature and elevated temperature burst pressure of composite cylinders, especially those of TZM-316SS with CG 27 liner were measured. A number of dynamic tests of 1500F and 1000F on some of the composite cylinders were made. A cylinder of TZM wire-316SS with CG 27 liner, designed to withstand 30 ksi at 1500F withstood more than 5000 cycles, indicating the feasibility of using composite material under these severe conditions. Technique to overwrap 30mm XM140 barrels with TZM-316SS composite and its densification by hot isostatic pressing was developed.