Seo, Young Ik Min, Kyung Ho Lee, Young Jung Lee, Kyu Hwan Sekino, Tohru Do Kim, Young 2024-01-19T13:38:23Z 2024-01-19T13:38:23Z 2022-03-07 2007 1012-0394 https://pubs.kist.re.kr/handle/201004/116395 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 mu m, 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 degrees C in a dry N-2 atmosphere for 60 min with heating rate of 20 degrees C/min. In case of heat treatment condition, sintered parts were solution treated at 475 degrees C and aged at 175 degrees 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 x 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. English TRANS TECH PUBLICATIONS LTD Effect of Al2O3 particle size on compressive behavior of al composites Conference 10.4028/www.scientific.net/SSP.124-126.1137 1 IUMRS International Conference in Asia, v.124-126, pp.1137 - + IUMRS International Conference in Asia 124-126 1137 + SZ Cheju Isl, SOUTH KOREA 2006-09-10 ADVANCES IN NANOMATERIALS AND PROCESSING, PTS 1 AND 2 000245890100283 2-s2.0-38549130471 Proceedings Paper