%A A. Ismail
%A N.H. Othman
%A M. Mustapha
%A M.S. Mohamed Saheed
%A Z. Abdullah
%A M. Muhammed
%A A. Mohamed Saat
%A F. Mustapha
%I MDPI
%V 15
%T Mechanical Performance and Corrosion Behaviour of Diffusion-Bonded A5083 Aluminium and A36 Mild Steel with Gallium Interlayer
%R 10.3390/ma15186331
%N 18
%D 2022
%L scholars16382
%J Materials
%O cited By 0
%K Aluminum alloys; Aluminum corrosion; Corrosive effects; Degradation; Diffusion; Diffusion bonding; Impact strength; Low carbon steel; Microhardness; Scanning electron microscopy; Steel corrosion; Surface roughness, Bonding parameters; Bonding temperatures; Corrosion behaviour; Dissimilar joining; Dissimilar joints; Holding time; Mechanical performance; Property characterizations; Scanning Electron Microscopy-Energy Dispersive X-ray analysis; Vickers microhardness tester, Corrosion rate
%X This article investigated the mechanical performance and corrosion behaviour of a diffusion-bonded A5083 aluminium/A36 mild steel dissimilar joint with a Gallium (Ga) interlayer. The bonding parameters were the bonding temperature (525 and 550 °C), holding time (60 and 120 min) and surface roughness (800 and 1200 grit). Property characterisation was achieved using Scanning Electron Microscopy (SEM), Energy Dispersive X-ray (EDX) analysis, Vickers microhardness tester, Izod impact tester and potentiodynamic polarisation testing. The results revealed that the significance of the bonding parameters was in the order bonding temperature > surface roughness > holding time. Increasing the bonding temperature resulted in an increase in the impact strength and a corresponding reduction in the corrosion rate and microhardness. However, increasing the grit size decreased the microhardness and a corresponding increase in the impact strength and corrosion rate. The impact strength and corrosion rate decreased with the increasing holding time while the microhardness followed a reverse trend. It was also discovered that incorporating the Ga interlayer resulted in a 67.9 improvement in the degradation rate. © 2022 by the authors.