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Fabrication of Al-Based Matrix Composite Reinforced with WAl12 Intermetallic Particles by Press-Forming Process Using High-Energy Ball-Milled Powders

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Abstract:

The 22wt%WAl12 intermetallic particulate reinforced Al-based matrix composite was successfully fabricated by press-forming technology using high-energy ball-milled powders. X-ray diffraction analysis shows that WAl12 reinforcement phase has been obtained after in situ reaction of Al matrix with W14Al86 alloy at 620°C. The mechanical properties of the composite material were studied at room temperature. The Young’s modulus, microhardness and the maximum ultimate tensile strength of this composite material can reach 75GPa, 1.51GPa and 471MPa, respectively. The results show that there is a good interfacial bonding between the Al matrix and WAl12 particles. However, the composite cannot be applied in high temperature environment because of its fairly low strength residual ratio.

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Periodical:

Advanced Materials Research (Volumes 476-478)

Pages:

574-578

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.476-478.574

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Online since:

February 2012

Authors:

Shu Guang Cai

Keywords:

Mechanical Alloying, Mechanical Property, Metal Matrix Composite (MMC), WAl12 Intermetallic Particles

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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