The effect of oxygen on the microstructure evolution and glass formation of Zr-based bulk metallic glasses (BMGs)was studied in detail.It was found that oxygen did not form oxides or dissolve in glass matrix,but induced the precipitation of α-Zr which has the high affinity and solubility of oxygen in the Zr-based bulk metallic glass (Zr-BMG).With the precipitation ofα-Zr,the remaining melts contain much lower oxygen content and have strong glass formation,resulting in the formation of α-Zr/BMG composite.The findings provide an important insight into the mechanism of the oxygen on glass formation,and give us a useful guideline to avoid the oxygen detrimental for de-signing new BMGs.
参考文献
| [1] | J.L. Cheng;G. Chen;F. Xu;Y.L. Du;Y.S. Li;C.T. Liu.Correlation of the microstructure and mechanical properties of Zr-based in-situ bulk metallic glass matrix composites[J].Intermetallics,201012(12):2425-2430. |
| [2] | G. Chen;J.L Cheng;C.T. Liu.Large-sized Zr-based bulk-metallic-glass composite with enhanced tensile properties[J].Intermetallics,2012:25-33. |
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