[Kovove materialy - Metallic materials]
    Thu - September 23, 2021 - 03:57 No. of hits : 1288133 ISSN 1338-4252 (online) ISSN 0023-432X (printed)
© Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Bratislava, Slovak Republic

VOLUME 59 (2021), Issue 1

Oxide dispersion strengthened magnesium: Effect of sonicated dispersion on the microstructure and mechanical properties
HASSAN, S. F.
vol. 59 (2021), no. 1, pp. 1 - 9

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.%.

Key words
light alloy, oxide dispersion strengthened, sonication, microstructure, mechanical properties

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Full title of this journal is bilingual: Kovové materiály - Metallic Materials.
The official abbreviation in accordance with JCR ISI is Kovove Mater.


Article abstracts updated: 2021-09-20 06:12      
Articles in press revised: 2021-09-07 10:08     
Full text pdf uploaded: 2021-09-17 10:25    
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