Abstract
One challenge in developing new materials is solid metal-induced embrittlement, where the fracture stress or ductility of the metal decreases upon contact with another metal surface. Materials such as aluminium demand precise temperature control for optimal results, often requiring specialized equipment. Strengthening aluminium alloys often involves cold working techniques like wire drawing or cold rolling. By combining methods such as cold working, heat treatment, and most especially alloying, the mechanical properties of aluminium alloys can be optimized. To address these concerns, an experimental study investigated the nanomechanical response of an alloy developed for anti-corrosion and structural applications. Corrosion behaviour was evaluated in a 3.65 wt% NaCl solution using a potentiostat/galvanostat, while tribological performance was assessed using a reciprocating sliding tribometer. Microhardness properties were studied using a Vickers microindenter, and thermal stability was examined using a thermo-gravimetric analyzer. Structural modifications were analysed using SEM/EDX and X-ray diffractometer (XRD). Results showed that the HEA (high entropy alloy) 17 sample exhibited outstanding corrosion resistance, with a corrosion rate (CR) of 0.0639 mm/year and corrosion current density (jcorr) of 5.500E−06 A/cm2. All HEA samples displayed high wear rates and worn track sections compared to CONTROL 2. The HEA 16 and HEA 18 samples demonstrated notably high Vickers hardness of 534.50 µN/mm2 and 533.48 µN/mm2, respectively. Despite its high copper content, the CONTROL 1 sample did not exhibit comparable hardness. SEM images revealed refined microstructures and distinct outer morphologies in the examined samples.
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Samuel U. Ayuba: writing of manuscript and analysis
Ojo S. I. Fayomi: conceptualization, research supervision
Olugbenga A. Omotosho: vetting, interpretation and writing of the manuscript
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Ayuba, S.U., Fayomi, O.S.I. & Omotosho, O.A. Experimental investigation of nanomechanical response from synergistic metal alloy fusion of Cu-Al-Zn-Sn for anti-corrosion and structural application. Int J Adv Manuf Technol (2024). https://doi.org/10.1007/s00170-024-13669-7
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DOI: https://doi.org/10.1007/s00170-024-13669-7