Thermal motion of a chain of liquid lead nanoinclusions attached to a dislocation segment fixed at its ends in the aluminum-based alloy was studied using TEM in the temperature range from 442 °C to 497 °C. The projections of points of the trajectories of the inclusions onto the dislocation line were analyzed. The evidence for the collective interaction of all the inclusions and their spatially correlated collective thermal motion was obtained. Also, moderate temporal autocorrelation of thermal motion of the inclusions and a very weak temporal cross-correlation of thermal motion of the inclusions in all pairs was shown. The FFT phase spectra of the time dependencies of the inclusions positions on the dislocation segment give the evidence for the phase synchronization of thermal oscillations of the inclusions. It is shown that the thermal oscillations of the terminal inclusion attached to the dislocation node and elevation of temperature lead to decrease in the level of synchronization of thermal oscillations of the inclusions in the chain. It is indicated that the development of the process of desynchronization of thermal oscillations of the inclusions manifests itself by an increase in the density of phase steps in the initially linear unwrapped phase spectra accompanying by an increase in the interaction of the steps.

中文翻译：

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附着在铝基体中固定位错段上的液态铅纳米夹杂物链的热运动的空间和时间动力学


使用 TEM 在 442 °C 至 497 °C 的温度范围内研究了附着在铝基合金末端固定位错段上的液态铅纳米夹杂物链的热运动。分析了夹杂物轨迹点在位错线上的投影。获得了所有包裹体的集体相互作用及其空间相关的集体热运动的证据。此外，所有对中的夹杂物的热运动都显示出中等的时间自相关性，而夹杂物的热运动的时间互相关性非常弱。位错段上夹杂物位置随时间变化的 FFT 相位谱为夹杂物热振荡的相位同步提供了证据。结果表明，位错节点上附着的末端夹杂物的热振荡和温度的升高会导致链中夹杂物热振荡同步水平的降低。结果表明，夹杂物热振荡去同步过程的发展表现为初始线性展开相谱中相阶密度的增加，伴随着阶跃相互作用的增加。