FABRICATION OF COMPOSITES BY DIFFUSION PROCESSING.
DREXEL UNIV PHILADELPHIA PA DEPT OF METALLURGICAL ENGINEERING
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Composite materials containing continuous NiAl3 fibers in an aluminum matrix were grown by solid state diffusion at 600C from nickel wires embedded in aluminum hot-pressed. The kinetics of formation of the NiAl3 and Ni2Al3 phases and the ultimate solid of the nickel terminal solid solution and Ni2Al3 phases were studied. The NiAl3-aluminum composite structure was developed by a diffusion treatment of 72 hours at 600C when 0.005 inch nickel wires were used in the starting structure. Although strengths of these composites were low due to grain boundary fracture of the NiAl3, this method of composite fabrication may prove applicable to the fabrication of composites in other alloy systems. Author
- Laminates and Composite Materials
- Fabrication Metallurgy