Heat-treatment (Annealing) effect on the mechanical and electrochemical performance of a synthesized AlCrFeMnNiV equi-atomic high entropy alloy (HEA) via Arc-melting and casting Technologies.
Kanyane, L. R. Malatji, N. Popoola, A. P. I.
Kanyane, L. R.
Malatji, N.
Popoola, A. P. I.
Citations
Altmetric:
Abstract
In this work, an equi-atomic AlCrFeMnNiV HEA was synthesized by means of arc-melting and casting processes. The casted alloy ingots were heat-treated (annealed) at temperatures of 400, 600 and 800 ºC, for 2 h. The effect of the heat-treatment temperature on the HEA microstructural evolution, compressive strength and corrosion behavior was investigated. Heat-treatment temperatures of 400 and 600 ºC resulted in increased micro-hardness properties that, at 800 ºC, were drastically reduced, although a good combination between strength and ductility was observed. HEA showed an extreme decrease in the current density (J (A/cm2)), after the heat-treatment, with a lower potential (V). The heat-treated
HEA demonstrated a good corrosion rate in acidic conditions, as compared to that of nickel (Ni) based, titanium (Ti) alloys and stainless steel (SS) super alloys.
Description
Date
2021-10-25
Journal Title
Journal ISSN
Volume Title
Publisher
Sociedade Portuguesa de Electroquímica
Research Projects
Organizational Units
Journal Issue
Keywords
HEA, AlCrFeMnNiV, Arc-melting, Casting, Heat-treatment (annealing), Compression and corrosion