Improvement of Plasticity of Ti-Based Bulk Metallic Glasses by Addition of Nb |
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| Authors: | SHAN Sheng-Feng ZHAN Zai-Ji FAN Chang-Zeng JIA Yuan-Zhi ZHANG Bao-Qing LIU Ri-Ping WANG Wen-Kui |
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| Affiliation: | State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004Department of Physics, Jining University, Qufu 273155 |
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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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