Srivastava, V C and Singh, Mirtunjay and Kumar, Tipu and Sahoo, K L (2011) Effect of Al-alloy composition and foaming temperature on pore size, density and mechanical properties. In: International Conference on Porous Metals and Metallic Foams (MetFoam-2012), September 18-21, 2011, Busan, Korea.
Sandwich aluminium foams were developed, with in-situ face sheets, by controlled powder forging and rolling. The parameters for forging, rolling and sintering were optimized for dif-ferent combinations of Aluminium (Al), Al-12Si alloy, Al-8Si alloy and flyash. The foaming of the precursor was recorded and the expansion with time was estimated using image analy-sis. The growth of the sandwich could lead to ~350-400% increase in thickness, before melt-ing of the face sheet, compared to the precursor without Al sheet that led to ~ 1000% expan-sion. The density varied between 0.35-0.90 g/cc and the average size of pores varied in the range of 2-5 mm. Compressive properties were evaluated and the total energy absorbed, up to 60% of deformation, was correlated with the density. The relation followed a power law with R2 value of 0.95.
|Item Type:||Conference or Workshop Item (Paper)|
|Uncontrolled Keywords:||Al-foam, sandwich, density, mechanical property, foaming behaviour|
|Divisions:||Metal Extraction and Forming|
|Deposited By:||Dr. V.C. Srivastava|
|Deposited On:||06 Dec 2011 12:21|
|Last Modified:||26 Dec 2011 14:51|
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