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A porous 7075 Al alloy was fabricated by bubble expansion in a semi-solid state. After processing at 903 K for 72 h in semi-solid state, pores were formed relatively uniformly and a high porosity of 75% was attained.
Deformation behavior and cavitation characteristics of Al–4.5Mg–0.09Si and Al–4.5Mg–0.2Si alloys containing Mg 2 Si particles have been investigated at 613–693K. Tensile elongations above 350% were obtained in both alloys. Determination of the strain rate sensitivity and activation energy showed that in both alloys viscous dislocation glide creep deformation mechanism was operative and was...
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