Mechanical and Tribological Performance of AlCrFeCuNi-(Vx) HEAs Synthesized via Arc Melting technique

¹ Department of Chemical, Metallurgical and Materials Engineering, Tshwane University of Technology, P.M.B. X680, Pretoria, South Africa
² Laser Materials Processing Group, National Laser Center CSIR, Pretoria 0001, South Africa
³ School of Physical and Chemical Sciences, North-West University, Mahikeng Campus, Corner of Albert Luthuli and University Drive, Mmabatho, 2745. South Africa

Authors contacts: mpofupraise9@gmail.com, Tel: +27 605868097
Authors contacts: Malatjin@tut.ac.za, Tel: +27 123824363
Authors contacts: lrkanyane@gmail.com, Tel: +27 123824663

Abstract

The AlCrFeCuNi-(Vx) High Entropy Alloy (HEA) was created via arc-melting and casting processes. The influence of vanadium (V) on the Nano mechanical behaviour, microstructural development, as well as the wear performance of the produced HEAs was examined. Notable improvements to the Nano hardness of the HEAs were evident with an increase in V content from 1at% to 5at%. The addition of V altered the frictional behaviour of the HEA with an increased coefficient of friction as V is increased. The addition of V also greatly affected the microstructural orientation of the HEA, exhibiting signs of homogenization as V content increased.