Abstract
The large-scale plastic deformation behavior of aluminum-stainless steel fiber composites has been examined under conditions of simulated forging. With the load applied perpendicular to the direction of reinforcement, deformation normally occurs in a plane strain mode with no metal flow in the direction of fiber alignment. Two possible types of material damage are identified: (i) void formation in the matrix adjacent to the fibers; (ii) breaking of the fibers, leading to deviations from plane strain. Forming limit criteria for both types of damage are established, which are related to the workpiece geometry and friction parameters of the system through plasticity theory. These criteria form the basis of a rational approach to design of processes for forging complex shapes from fiber-reinforced composite materials having a ductile matrix.
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T. ERTÜRK, formerly Research Assistant (Academic Program of the Agency for International Development, Department of State), Department of Metallurgical Engineering, Drexel University, Philadelphia, Pa.
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Ertürk, T., Kuhn, H.A. & Lawley, A. Forging of metal-matrix composites-forming limit criteria. Metall Trans 5, 2295–2303 (1974). https://doi.org/10.1007/BF02644009
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DOI: https://doi.org/10.1007/BF02644009