Long-term thermal stability, β relaxation, and mechanical behavior of a LaCe-based bulk metallic glass
In this work, the long-term thermal stability, dynamic relaxation behavior, and mechanical performance of (La60Ce40)60Al15Co25 bulk metallic glass (BMG) were studied using differential scanning calorimetry, internal friction measurement, and compression testing, respectively. The long-term stability...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2021-01-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/5.0037102 |
| Summary: | In this work, the long-term thermal stability, dynamic relaxation behavior, and mechanical performance of (La60Ce40)60Al15Co25 bulk metallic glass (BMG) were studied using differential scanning calorimetry, internal friction measurement, and compression testing, respectively. The long-term stability of the LaCe-based BMG was realized by constructing a continuous heating transformation diagram on the basis of the kinetic characteristics of the crystallization behavior. The internal friction analysis of the LaCe-based BMG showed the emergence of prominent slow β relaxation before the glass transition temperature. The β relaxation had a close relationship with the heterogeneous distribution and the good mobility of the constituting elements. The compression testing results in different temperature ranges near and far from the activation temperature of the β relaxation showed that the plastic deformation could proceed continuously as the deformation temperature reached the activation temperature of the β relaxation. |
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| ISSN: | 2158-3226 |