EFFECT OF Al2O3 ADDITION ON THE FOAMABILITY BEHAVIOUR OF ALUMINUM AND ALUMIX 231 BASED METALLIC FOAM

16601

In this study, pure aluminum and pre-alloyed Alumix 231 (Al-Cu %2,5-Mg %0,5–Si %14) based composite foams reinforced with Al2O3 particulate have been produced by powder metallurgy route. 1% titanium hydrate powders and 1-3-5-7% Al2O3 particulates have been added to Al and Alumix 231 powders and mixed in a three dimensional mixer. Mixed powders were then pressed at 600 MPa pressure to produce block samples which were sintered at 550 °C for 3 hours. After then foaming process has been carried out at 690 and 710 °C. Foamed samples were taken from the furnace and cooled in open air. Effects of Al2O3 particles on the lineer expansion, density and the size of porosity have been determined.

651

Al Foam , Alumix 231 foam , Al2O3 addition , Linear Expansion

Journal Of The Faculty Of Engineering an‎d Architecture Of Gazi University

658

Journal Of The Faculty Of Engineering an‎d Architecture Of Gazi University