Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1483365 | Journal of Non-Crystalline Solids | 2007 | 4 Pages |
Abstract
The present paper reports on the thermal stability and activation energy of crystallization of bulk metallic glasses (BMGs) (Cu61.8Zr38.2)1−xAlx. The (Cu61.8Zr38.2)1−xAlx composition series, prepared by copper mould suction casting into bars with a diameter of 3 mm, form BMGs with an e/a range of 1.24–1.3. These BMGs manifest increased thermal stability with increased e/a ratios. The activation energies (ΔE) of crystallization as derived from thermal analysis at different heating rates follow a similar tendency to that of the thermal stability, indicating stronger short-range ordering with increasing e/a ratios. The optimum BMG Cu58.1Zr35.9Al6 exhibits the highest thermal stability and the largest ΔE.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Qing Wang, Jianbing Qiang, Yingmin Wang, Junhai Xia, Huogen Huang, Dehe Wang, Chuang Dong,