Effect of precipitate particles on creep of aluminum-copper alloys during age hardening

E. E. Underwood, L. L. Marsh, G. K. Manning
naca-tn-4372
Sep 1958


Spherical or platelike precipitates were prepared in aluminum alloys with 1 to 4 weight percent copper. The effects of controlled sizes and distributions of particles were determined by creep, tensile, and hardness measurements, by quantitative metallographic evaluation of the particle characteristics, and by X-ray and electron-microscope examinations.

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