Turkeytrib 2020, İstanbul, Türkiye, 17 - 19 Aralık 2020, ss.26-32
Aluminum alloys have a very important place in industries such as aviation and automotive. Various alloy researches originating from this great importance started a long time ago and have continued to increase until today. Ball alloys and mechanical alloys have been used to produce modern alloys for the past sixty years . In this study, in order to meet the need of modern alloys, the characteristics of Al alloy with different amount of Cu additives were examined by following the ball milling rules in the device working with spex manner.
Homogeneous mixing of Al, varying amounts of Cu, Mg and Zn metal powders and SiC ceramic powders and mechanical alloys of metal powders by using high energy ball milling were carried out in the Retsch MM 400 model mixer device, which performs movement in a spex manner. After this process, X-ray diffraction (XRD) was applied to the powdered mixtures. With the data obtained from XRD graphics; The crystal size was calculated using the Scherrer equation, and the lattice stresses were calculated using the Williamson-Hall equation and comparisons between these two data were made.
It was observed that the amount of Cu by weight, both the crystal size and the lattice strain data, did not make a notable change for these properties. Then, powder mixtures were sintered in hot isostatic press in argon atmosphere, which is a shielding gas, and turned into samples. These samples were polished and scanning electron microscopy (SEM) images were taken. In addition, these samples were compared by making Vickers micro-hardness measurements.