Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 590, Issue -, Pages 301-306Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2013.10.049
Keywords
Al-based metal matrix composite; Metallic glass; High pressure hot pressing
Categories
Funding
- National Natural Science Foundation [10972190]
- PCSIRT [IRT1080]
- Hunan Province Science and Technology Planned Project [2012GK2024]
- Natural Science Foundation of Hunan [13JJ3063]
- research project of the education department of Hunan province [12C0376]
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In order to obtain highly dense metal matrix composites (MMCs) reinforced by glassy particles without crystallization, an Al-based MMC with pure Al powders reinforced with different amounts of ball milled Al60Cu20Ti15Zr5 glassy powders were produced by hot press at the temperatures within the supercooled liquid region under a high pressure of 5 GPa. The microstructures of the MMCs were investigated and the mechanical properties were evaluated by room temperature compression tests. It is found that the consolidation temperature and the Al content have a significant influence on the consolidation quality of the composites, and the high pressure can suppress the crystallization of the glassy particles during the consolidation. The densification is 91% and 96% for the composites containing 40 vol% Al and 60 vol% Al consolidated at 390 degrees C, respectively. The composites containing 40 vol% Al and 60 vol% Al consolidated at 390 degrees C exhibit the ultimate strength of 353 and 281 MPa, respectively. Moreover, the composites containing 60 vol% Al display a good plasticity at room temperature. (C) 2013 Elsevier B.V. All rights reserved.
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