论文标题
严重的塑性变形对无形PD玻璃和过冷的液态的放松的影响
Impact of severe plastic deformation on the relaxation of glassy and supercooled liquid states of amorphous Pd$_{40}$Ni$_{40}$P$_{20}$
论文作者
论文摘要
通过高压扭转对PD $ _ {40} $ ni $ _ {40} $ p $ _ {20} $的玻璃状和过冷的液态的放松的严重塑性变形对放松的影响，使用了差异扫描量表的组合进行了研究。分析了由于变形而引起的量热信号的变化，并分析了随后的热处理，并发现了相对于中距离（MRO）的变形（恢复）和退火（弛豫）之间的相关性（RESEWERYATION）。此外，确定了超冷液态放热峰的发生与MRO类型的特定变化之间的耦合。这些发现是在潜在能源景观方案中理解的，该方案为MRO工程提供了新方法。
The impact of severe plastic deformation by high-pressure torsion on the relaxation of the glassy and supercooled liquid states of Pd$_{40}$Ni$_{40}$P$_{20}$ was investigated using a combination of differential scanning calorimetry, low-temperature heat capacity and fluctuation electron microscopy. The changes in the calorimetric signals due to deformation and subsequent heat treatments were analyzed and a correlation between deformation (rejuvenation) and annealing (relaxation) was found in relation to medium-range order (MRO). Moreover, a coupling between the occurrence of an exothermic peak in the supercooled liquid state and specific changes in the MRO types were identified. These findings are comprehended in a potential energy landscape scheme offering a new approach for MRO engineering of glasses.
