| CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
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Ductile Bulk Aluminum-Based Alloy with Good Glass-Forming Ability and High Strength |
| ZHUO Long-Chao, PANG Shu-Jie, WANG Hui, ZHANG Tao |
| Department of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191 |
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| Cite this article: |
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ZHUO Long-Chao, PANG Shu-Jie, WANG Hui et al 2009 Chin. Phys. Lett. 26 066402 |
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Abstract Based on a new approach for designing glassy alloy compositions, bulk Al-based alloys with good glass-forming ability (GFA) are synthesized. The cast Al86Si0.5Ni4.06Co2.94Y6Sc0.5 rod with a diameter of 1 mm shows almost fully amorphous structure besides about 5% fcc-Al nucleated in the center of the rod. The bulk alloy with high Al concentration exhibits an ultrahigh yield strength of 1.18GPa and maximum strength of 1.27GPa as well as an obvious plastic strain of about 2.4% during compressive deformation. This light Al-based alloy with good GFA and mechanical properties is promising as a new high specific strength material with good deformability.
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| Keywords:
64.70.Pe
81.30.Fb
62.20.-x
65.60.+a
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Received: 24 April 2009
Published: 01 June 2009
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| PACS: |
64.70.pe
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(Metallic glasses)
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81.30.Fb
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(Solidification)
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62.20.-x
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(Mechanical properties of solids)
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65.60.+a
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(Thermal properties of amorphous solids and glasses: heat capacity, thermal expansion, etc.)
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