Synthesis and Characterization of Al7075, Al7075-10 Vol. % Al2O3 Composite Prepared by High-Energy Ball Milling

C. Raja; R. Devi; S. Sivaprakash; V. Anandakrishnan

doi:10.4028/www.scientific.net/AMM.592-594.755

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 592-594Synthesis and Characterization of Al7075,...

Synthesis and Characterization of Al7075, Al7075-10 Vol. % Al₂O₃ Composite Prepared by High-Energy Ball Milling

Abstract:

Al7075 and Al₂O₃ powders were synthesized via high-energy ball mill for 15 h. Al7075 powders were mixed with 10 vol. % Al₂O₃, compacted by cold uniaxial compaction at 400 MPa. The green pellets were degassed at 350 oC for 30 min, and then sintered in the temperature of 600 oC under argon atmosphere for 120 min. It was shown that better density, vickers micro hardness and corrosion resistance were achieved due to refinement of grain size. HRTEM micrographs demonstrated a uniform distribution of Al₂O₃ particles in aluminium alloy and equilibrium η (MgZn₂) precipitates along the grain boundaries.

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Periodical:

Applied Mechanics and Materials (Volumes 592-594)

Pages:

755-759

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.592-594.755

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Online since:

July 2014

Authors:

C. Raja*, R. Devi, S. Sivaprakash, V. Anandakrishnan

Keywords:

Composite, Corrosion, Density, HRTEM, Vickers Microhardness

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References

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