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Improvement of Plasticity of Ti-Based Bulk Metallic Glasses by Addition of Nb |
| SHAN Sheng-Feng1,2, ZHAN Zai-Ji1, FAN Chang-Zeng1, JIA Yuan-Zhi1, ZHANG Bao-Qing1, LIU Ri-Ping1, WANG Wen-Kui1 |
| 1State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 0660042Department of Physics, Jining University, Qufu 273155 |
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| Cite this article: |
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SHAN Sheng-Feng, ZHAN Zai-Ji, FAN Chang-Zeng et al 2008 Chin. Phys. Lett. 25 4165-4167 |
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Abstract Ti-based bulk metallic glasses (Ti40Zr25Cu9Ni8Be18)100-xNbx with x=0 to 5at.% are prepared by copper-mold casting. The glass formation ability is almost unchanged by addition of Nb. The compression plasticity is, however, apparently changed, from 3% at x=0 to 13% at x=3, about 330% increases at the strain rate of 1×10-4s-1. The increment of the plasticity can be attributed to the segregation of Nb in the area of shear bands during the compression processing. An effective way to increase the plasticity of Ti-based bulk metallic glasses is thus proposed.
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| Keywords:
81.05.Kf
62.20.Fe
62.20.Mk
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Received: 25 June 2008
Published: 25 October 2008
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