Home Kovove Materialy-Metallic Materials 2021 Kovove Materialy-Metallic Materials Vol. 59 (2021), no. 1, pp.1–9

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Kovove Materialy-Metallic Materials Vol. 59 (2021), no. 1, pp.1–9

Title: Oxide dispersion strengthened magnesium: Effect of sonicated dispersion on the microstructure and mechanical properties
Author: S. F. Hassan

Abstract: In this study, ultrafine (0.3 μm) aluminum oxide (Al2O3) particles were dispersed into commercially pure magnesium powder using the sonication method and processed by press-sinter-extrusion technique. The oxide particles dispersion in the processed magnesium microstructure was reasonably homogeneous and with good interfacial integrity. The dispersed oxide particles refined the grain morphology. They significantly improved the hardness, yield strength, tensile strength, ductility, and work-of-fracture of magnesium when added to a vol.% of up to 2.5. The dispersed oxide particles also changed the fracture mode of magnesium from brittle to ductile nature. However, the study also revealed that the ultrafine oxide particles dispersion was most effective in improving the overall mechanical properties of magnesium when added in an amount of 0.7 vol.%.

Keywords: light alloy, oxide dispersion strengthened, sonication, microstructure, mechanical properties
Published online: 01-Apr-2021
Year: 2021, Volume: 59, Issue: 1 Page From: 1, Page To: 9
doi:10.4149/km_2021_1_1


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