Unveiling the mechanical and microstructural properties of SiC reinforced aluminum wires recycled from scraps by friction stir extrusionShow others and affiliations
2024 (English)In: Materials Science & Engineering: A, ISSN 0921-5093, E-ISSN 1873-4936, Vol. 916, article id 147333Article in journal (Refereed) Published
Abstract [en]
Friction Stir Extrusion (FSE) has been proven as an effective solid-state process to directly recycle metal chips into high-quality wires/rods/tubes. However, the demand for Al-based composite wires with enhanced properties is substantial, and achieving a uniform distribution of the strengthening phase within the composite wire by establishing a robust metal/ceramic interface remains a significant challenge. In this study, AA6082 Aluminum alloy wires reinforced with 12.5 vol% SiC particles, exhibiting homogeneous particle distribution and superior mechanical properties, were successfully produced through the FSE technique. The investigation focused on examining the influence of processing parameters and the addition of SiC reinforcement on the microstructure and mechanical characteristics of the extruded wires. Scanning electron microscopy (SEM), Electron Backscatter Diffraction (EBSD), together with microhardness, bending, and tensile tests, were used to comprehensively analyze the resulting properties. The findings demonstrate a substantial enhancement in the wires’ mechanical properties due to the SiC particles. Both tool rotation and tool force were varied during the experimental campaign. Notably, the reduction in porosity and grain refinement resulted in a 12.78 % increase in tensile strength and an 18.6 % improvement in microhardness compared to Al 6082 alloy extruded wires. Grain orientation analysis revealed a fully recrystallized microstructure with a weak texture. Furthermore, the study evaluated power consumption and surface roughness while assessing the feasibility of deposition, thereby highlighting the potential application of this technique in advanced additive manufacturing processes.
Place, publisher, year, edition, pages
Elsevier Ltd , 2024. Vol. 916, article id 147333
Keywords [en]
Metal extrusion; Microhardness; Organoclay; Recrystallization (metallurgy); Scrap metal; Scrap metal reprocessing; Tensile strength; Wire insulating extruders; Aluminum wires; Composite wires; Friction stir; Friction stir extrusion; Mechanical; Micro-structural properties; Property; Reinforced aluminum; SiC particles; Solid-state process; Grain refinement
National Category
Manufacturing, Surface and Joining Technology Metallurgy and Metallic Materials
Research subject
Production Technology
Identifiers
URN: urn:nbn:se:hv:diva-22561DOI: 10.1016/j.msea.2024.147333ISI: 001332480200001Scopus ID: 2-s2.0-85205932831OAI: oai:DiVA.org:hv-22561DiVA, id: diva2:1927292
Note
This study was carried out within the research activities of project “PERPETUAL 100 % Material utilization using sOlid sTate recycling and Additive Manufacturing for production and repairing of aluminum components – PERPETUAL MOTION” (2022X5RPSM PRIN 2022), financed by the by the European Community – Next Generation EU.
2025-01-142025-01-142025-09-30Bibliographically approved