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Zielińska, Aleksandra
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Publications (7/7 displayed)
- 2024Microstructural, corrosion and mechanical properties of a WE43 alloycitations
- 2024Microstructural, corrosion and mechanical properties of a WE43 alloy: conventional extrusion versus SPDcitations
- 2023Microstructure and properties of an AZ61 alloy after extrusion with a forward-backward oscillating die without preheating of the initial billetcitations
- 2023In-depth analysis of the influence of bio-silica filler (Didymosphenia geminata frustules) on the properties of Mg matrix compositescitations
- 2022Heat Treatment of NiTi Alloys Fabricated Using Laser Powder Bed Fusion (LPBF) from Elementally Blended Powderscitations
- 2022Evolution of microstructure dependent corrosion properties of ultrafine AZ31 under conditions of extrusion with a forward backward oscillating diecitations
- 2022The Role of LPSO Structures in Corrosion Resistance of Mg-Y-Zn Alloyscitations
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article
Microstructural, corrosion and mechanical properties of a WE43 alloy: conventional extrusion versus SPD
Abstract
A hexagonal close-packed-structure WE43 alloy was extruded without any preheating of the initial billet usingextrusion with an oscillating die to improve the corrosion and mechanical properties. The WE43 alloy wasextruded at high ratios of R1 5:1, R2 7:1 and R3 10:1. Electron back-scatter diffraction and transmission electronmicroscopy were used to determine the microstructural properties of the alloys. The influence of the extrusionmethod and the extrusion ratios on the corrosion and mechanical properties were investigated. Electrochemicaltests were performed, and the corrosion damage was inspected. Tensile tests were made using micro specimens.When compared to conventional extrusion, the microstructural changes obtained with the KoBo method at R1 5:1increased the corrosion resistance, which was not only due to the grain refinement, but also due to the intensityof the texture. A decline in the corrosion resistance of the alloys deformed at higher extrusion ratios wasobserved. This was a result of the massive plastic strain imposed by the KoBo die. The room-temperature mechanicalproperties of the KoBo-extruded alloys were improved. However, at higher temperatures the mechanicalproperties decreased due to the solutioning of tiny triple precipitates.