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Compressive behavior of 7xxx series Al composites reinforced with Al 2O3
- Authors
- Seo, Young Ik; Min, Kyung Ho; Lee, Kyu Hwan; Kim, Young Do
- Issue Date
- Sep-2007
- Publisher
- Trans Tech Publications Ltd.
- Keywords
- Al2O3 particle; Fractography; Mechanical properties; MMC
- Citation
- Materials Science Forum, v.534-536, no.PART 2, pp 857 - 860
- Pages
- 4
- Indexed
- SCOPUS
- Journal Title
- Materials Science Forum
- Volume
- 534-536
- Number
- PART 2
- Start Page
- 857
- End Page
- 860
- ISSN
- 0255-5476
1662-9752
- Abstract
- Mechanical properties of 7xxx series Al metal matrix composite (MMC) powders containing different amounts of ceramic were investigated. The ceramic contents of the starting powders were 5 wt.% or 10 wt.%. 7xxx Al blended powder was used for comparison. The powders were uniaxially cold compacted using a cylindrical die with a compacting pressure of 250 MPa and were sintered at 620°C in a dry N2 atmosphere for 60 min. The heating rate was varied up to 100°C/min. For the heat treatment, sintered parts were solution treated at 475°C and aged at 175°C. Compression tests were conducted to reveal the effect of Al2O3 particle content on the mechanical properties of the composites. Fractography was examined using a scanning electron microscope.
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