15th European Conference on Composite Materials: Composites at Venice, ECCM 2012, Venice, İtalya, 24 - 28 Haziran 2012
In the present study, the feasibility of recycling AZ91 alloy chips with the help of commercially pure Mg powders, via pressing and hot extrusion processes to produce bulk solid samples, was investigated. Furthermore, the effect of Mg powders and their amounts on the mechanical properties and corrosion behaviour of the recycled AZ91 alloy were studied. To evaluate the quality of the products, their microstructures were studied using optical microscope, their mechanical properties were determined by hardness, compression and wear tests. The corrosion behaviour was evaluated by immersion tests and potentiodynamic polarisation measurements in 3.5 % NaCl solution. The results from the hardness, compression and wear tests, immersion tests and potentiodynamic polarisation measurements showed that the hardness, strength and corrosion resistance of the recycled AZ91 alloy increased progressively by increasing the chips wt.% in the products. However, the wear resistance of the recycled AZ91 alloy decreased along with the reduction of electrical conductivity by adding Mg chip.