High strain rate superplasticity of discontinuous fiber reinforced pure aluminum composites

摘要

1N90 PM pure Al alone, AlN/1N90 PM Al composites and the #beta# -Si_3N_(4W)/pure IM Al composite fabricated by squeeze casting were hot-rolled after extrusion, and the high strain rate superplasticity were investigated. The 1N90 pure aluminum deformed at 893K and 913k exhibits the m value of 0.4 approx 0.47 and the total elongation of about 400