Disaccomodation phenomenon in Fe82B18-xCx and Fe82B18-xSix metallic glasses |
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| Institution: | 1. Jiangsu Key Laboratory of Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University, Nanjing 211189, China;2. Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China;3. Shanghai Key Laboratory of Material Frontiers Research in Extreme Environments (MFree), Institute for Shanghai Advanced Research in Physical Sciences (SHARPS), Pudong, Shanghai 201203, China;4. Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201204, China |
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| Abstract: | The isochronal disaccomodation (DA) of the initial permeability was measured in Fe82B18-xCx and Fe82B18-xSix metallic glasses in the temperature range from 77 to 600 K. An asymmetric isochronal spectrum with a single relaxation peak was observed on each studied glassy alloy. The peak shifts to the lower temperature side with increasing C content in Fe82B18-xCx, whereas the influence of Si on the peak in Fe82B18-xSix is opposite to the effect of C. The kinet ic behavior of DA was examined and the activation energy spectrum was evaluated. The replacement of B by C gives rise to the reduction of the activation energy, whereas the addition of Si increases the energy. A clearly annealing effect on DA was observed on each examined alloy. |
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