Use AMPB's laboratory-scale rolling mill to simulate the dynamic conditions associated with metallic structure forming and fabrication methods. Use aerospace aluminum alloys and commercially-available aluminum metal matrix composite (MMC) for reinforcement. Assess aluminum flow behavior and the strain fields within the MMC and their effects on the reinforcing fibers. Flow aluminum plate material into grooved die with preplaced MMC to form and reinforce stiffeners at selected processing temperatures. Evaluate bond microstructures and mechanical properties.
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In-situ selective reinforcement using an industrial process was assessed under a small purchase order placed with Scot Forge. As a feasibility demonstration, the company used a 3000-ton forge press to forge an aluminum plate with several strips of MMC placed on the plate surface. The plate and MMC were preheated to their standard forging temperature and then subjected to the forging process. The MMC was successfully embedded into the plate and metallurgically bonded to the aluminum alloy plate. The successful test was the first time that the in-situ selective reinforcement concept was demonstrated in a full-scale industrial process in an industrial environment.