Effect of Al2O3 particle size on compressive behavior of Al composites
- Authors
- Seo, Young Ik; Min, Kyung Ho; Lee, Young Jung; Lee, Kyu Hwan; Sekino, Tohru; Kim, Young Do
- Issue Date
- Sep-2007
- Publisher
- Trans Tech Publications Ltd
- Keywords
- Compressive behavior; Fractography; MMC
- Citation
- Solid State Phenomena, v.124-126, no.PART 2, pp.1137 - 1140
- Indexed
- SCOPUS
- Journal Title
- Solid State Phenomena
- Volume
- 124-126
- Number
- PART 2
- Start Page
- 1137
- End Page
- 1140
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/179586
- DOI
- 10.4028/www.scientific.net/SSP.124-126.1137
- ISSN
- 1012-0394
- Abstract
- Compressive behavior of 7xxx series Al metal matrix composite (MMC) powders with different ceramic contents and different particle size were investigated. As a starting powder of the experiments, ceramic contents of each starting powder were 5 and 10 wt.% and ceramic particle size of starting powder were 20 and 100 μm, respectively. And 7xxx Al blended powder was used for comparison. The powders were uniaxially cold-compacted using cylindrical die with a compacting pressure 250 MPa and sintered at 620°C in a dry N2 atmosphere for 60 min with heating rate of 20°C/min. In case of heat treatment condition, sintered parts were solution treated at 475°C and aged at 175°C. To reveal the effect of Al2O3 particle content and particle size on the mechanical properties of composites, compression test were conducted with constant strain rate of 1×10 -3/s using sub-size cylindrical samples of 9 mm diameter. Compression test was performed 5 times and its average value was used. Then fractography analysis was conducted using scanning electron microscope.
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