Akademik Veri Yönetim Sistemi
UMTEB – XIV International Scientific Research Congress, Naples, İtalya, 14 - 15 Eylül 2023, ss.97-108
High entropy alloys have become a major focus of interest in materials science in recent
years. Unlike conventional alloys, high entropy alloys contain at least four different main
elements and these elements are randomly distributed. Thanks to these properties, high
entropy alloys offer a wide range of components and can contain combinations of different
properties. The multiple phase regions in which these alloys exist can be used to provide
control of mechanical, thermal and magnetic properties. Research into high entropy alloys
offers great potential in a number of application areas such as more durable building
materials, efficient coatings for high temperature applications, energy storage systems and
environmentally friendly technologies. Therefore, high entropy alloys provide important
contributions to materials science, enabling the development of more innovative and
advanced technologies. In this study, it is aimed to produce high entropy alloys with Fe, Ni,
Cu, Cr, Al elements by powder metallurgy method. Equal 20 wt% of each element was added.
In addition, 1 wt% B4C was added to the structure. The powders were subjected to
mechanical alloying in a high energy planetary ball mill for 1, 2, 5, 10, 15, 20 and 25 hours.
The mechanical alloying process was carried out at a rotational speed of 400 rpm and under
argon atmosphere. In addition, a 5:1 ball to powder ratio and 10 mm diameter tungsten
carbide balls were used in the mechanical alloying process. To control the mechanical
alloying process, 2 wt% methanol was used. Morphological and elemental analyses of the
powders after alloying were carried out by scanning electron microscopy and EDS,
respectively. In addition, XRD processes were also performed for chemical analyses of the
powders.