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 indu...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 ofα-Zr which has the high affinity and solubility of oxygen in the Zr-based bulk metallic glass（ZrBMG）.With the precipitation ofα-Zr,the remaining melts contain much lower oxygen content and have strong glass formation,resulting in the formation ofα-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 designing new BMGs.展开更多
基金Item Sponsored by National Natural Science Foundation of China(51401104,51271093)Natural Science Foundation of Jiangsu Province of China(BK20140765)+1 种基金Jiangsu Natural Science Foundation for Distinguished Young Scholars of China(BK20140035)supported by the Opening Project of Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology ASMA201413 and ASMA201403
文摘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 ofα-Zr which has the high affinity and solubility of oxygen in the Zr-based bulk metallic glass（ZrBMG）.With the precipitation ofα-Zr,the remaining melts contain much lower oxygen content and have strong glass formation,resulting in the formation ofα-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 designing new BMGs.
