Synthesis and Mechanical Properties of a Novel Al/Β-Al3Mg2 Nanocomposite Prepared by Mechanical Alloying Process

R.A. Khosroshahi; A. Zolriasatein; Masoud Emamy; N. Nemati

doi:10.4028/www.scientific.net/AMR.445.827

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 445Synthesis and Mechanical Properties of a Novel...

Synthesis and Mechanical Properties of a Novel Al/Β-Al₃Mg₂ Nanocomposite Prepared by Mechanical Alloying Process

Abstract:

Complex metallic alloys (CMA) are new crystalline intermetallic phases representing an upcoming field in materials science. The β-Al₃Mg₂intermetallic compound belongs to this new class of materials. Different amounts of pre-alloyed β-Al₃Mg₂ nanoparticles (from 0 to 20 wt.%) were mixed with aluminum matrix powder and then co-milled in attrition ball mill for 10 hours. Consolidated samples were prepared by hot pressing of blended composite powders. Microstructural characterization, applying an optical microscope (OM) and scanning electron microscope (SEM) equipped with an energy dispersive X-ray (EDX) analyzer confirmed the formation of uniformly distributed β-Al₃Mg₂ nanoparticles in the matrix. Furthermore the results indicated that, increasing the amounts of β-Al₃Mg₂ nanoparticles leads the matrix grain size to be reduced. Effects of reinforcement contents on mechanical properties of nanocomposite samples were also investigated via hardness, compressive and wear tests. The results revealed that with increasing reinforcement content in the matrix, mentioned attributes of the composites are significantly improved.

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Periodical:

Advanced Materials Research (Volume 445)

Pages:

827-832

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.445.827

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Online since:

January 2012

Authors:

R.A. Khosroshahi, A. Zolriasatein, Masoud Emamy, N. Nemati

Keywords:

Complex Metallic Alloy, Mechanical Alloying, Nanocomposite, β-Al₃Mg₂Intermetallic

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References

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