SYNTHESIS OF AA2014 USING CACO3 AS A FOAMING AGENT BY LIQUID MELTING TECHNIQUE AND CHARACTERIZE THEIR MECHANICAL PROPERTIES

Abstract

Metal foam is revolutionary materials that exhibit different characteristics when compared to their solid material counterparts. Cellular structure of these materials provides the tool for the realization of optimal combination of properties. In the past, when a large dense metal contained any kind of pores, it was considered “defect” and therefore unsuitable for engineering purposes. In recent years, a great importance has been attached to a new class of engineering material, known as “Metallic Foam or Porous metals” as a result to their unique mechanical and physical properties. In my thesis, I have made aluminium foam of AA2014 alloy using CaCO3 as a Foaming Agent with different relative densities by Liquid Melting Technique. SEM is used for analysing of their cell wall and pores cavity. Elements and their intermetallic compounds distribution in cell wall and pores cavity are analysed by EDS technique. Finally I find out the relation between the quasi static compressive behaviour and plateau stress.