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| SYNTHESIS OF PLASTIC Zr–BASED BULK METALLIC GLASS WITH CRYSTAL PHASE BY DIRECTIONAL SOLIDIFICATION |
| QIAO Junwei; ZHANG Yong; CHEN Guoliang |
| State Key Laboratory for Advanced Metals and Materials; University of Science and Technology Beijing; Beijing 100083 |
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Cite this article:
QIAO Junwei ZHANG Yong CHEN Guoliang. SYNTHESIS OF PLASTIC Zr–BASED BULK METALLIC GLASS WITH CRYSTAL PHASE BY DIRECTIONAL SOLIDIFICATION. Acta Metall Sin, 2009, 45(4): 410-414.
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Abstract Plastic Zr58.5Ti14.3Nb5.2Cu6.1Ni4.9Be11.0 bulk metallic glass matrix composites containing uniformly distributed dendrites in the glass matrix were synthesized by the Bridgman solidification methold. Through tailoring the withdrawal velocity, the volume fraction of dendrites with characteristic spanning length, as well as the mechanical properties of the samples can change. The characteristic spanning length of the individual dendrites roughly obeys linear relationship with the withdrawal velocity. The compressive ultimate strength and the fracture strain of the sample reached 1930 MPa and 11.3%, respectively, when the withdrawal velocity was 1.0 mm/s.
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Received: 15 October 2008
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| Fund: Supported by National Basic Research Program of China (No.2007CB613903) and National Natural Science Foundation of China (No.50571018) |
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