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- Title
Synthesis of an Al-Mn-Based Alloy Containing In Situ-Formed Quasicrystals and Evaluation of Its Mechanical and Corrosion Properties.
- Authors
Naglič, Iztok; Leskovar, Blaž; Markoli, Boštjan; Samardžija, Zoran; Kobe, Spomenka; Delijić, Kemal
- Abstract
An Al-Mn alloy with additions of copper, magnesium, and silicon was prepared and cast into a copper mold. It contains in situ-formed icosahedral quasicrystals (iQCs), as confirmed by electron backscatter diffraction. The aim of this work is to present the mechanical and corrosion properties of this alloy and compare its properties with some conventional commercial materials. The compressive strength and compressive yield strength were 751 MPa and 377 MPa, while the compressive fracture strain was 19%. It was observed that intensive shearing caused the final fracture of the specimens and the fractured iQC dendrites still showed cohesion with the α-Al matrix. The polarization resistance and corrosion rate of the artificially aged alloy were 7.30 kΩ and 1.2 μm/year. The evaluated properties are comparable to conventional, discontinuously reinforced aluminum metal-matrix composites and structural wrought aluminum alloys.
- Subjects
QUASICRYSTALS; ALUMINUM-manganese alloys; CORROSION &; anti-corrosives; MAGNESIUM; SILICON; ELECTRON backscattering; YIELD strength (Engineering)
- Publication
JOM: The Journal of The Minerals, Metals & Materials Society (TMS), 2018, Vol 70, Issue 11, p2698
- ISSN
1047-4838
- Publication type
Article
- DOI
10.1007/s11837-018-2945-6