Ultrasonic vibration accelerated aging in La-based bulk metallic glasses
Ultrasonic vibration accelerated aging in La-based bulk metallic glasses
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超声振动加速 La 基大块金属玻璃的老化
DOI：
10.1016/j.jnoncrysol.2020.119967
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发表时间：
2020-05
影响因子：
3.5
通讯作者：
Peng Hailong
中科院分区：
文献类型：
--
作者：
Chen Siyuan;Li Song;Ma Jiang;Yu Haibin;Liu Huashan;Peng Hailong
系统研究了超声振动对La-68.5Al_（14）Ni_（16）Co_（1.5）大块非晶合金热力学性质的影响。我们发现一个显着的焓降低后的超声波处理的玻璃，由于结构弛豫向较低的能量状态，与发现预处理的样品有一个显着的较高的能量障碍的玻璃化转变相一致。随着超声处理时间的增加，在长时间范围内，比焓达到饱和，这是通过等温退火达到的。基于这些结果，我们得出结论，超声振动，定性，退火工艺的效果相同。这是因为超声微扰对合金的影响很小，大部分原子对超声微扰的响应是线性的，并且合金的硬度随处理时间的增加而单调增加。
The effect of ultrasonic vibrations on the thermodynamic properties of La-68.5 Al14Ni16Co1.5 bulk metallic glasses is systematically studied at various temperatures. We find a significant enthalpy lowering for the glasses after the ultrasonic treatment, due to the structural relaxation towards lower energetic states, coinciding with the finding that the pretreated samples have a noticeable higher energetic barrier for glass transition. With increasing the ultrasound-treating time, the reduced enthalpy saturates in the long-time regime, which is reachable by the isothermal annealing. Based on these results, we conclude that the ultrasonic vibration has, qualitatively, the same effect as that of the annealing process. This is interpreted by the fact that the ultrasonic perturbation is weak for the technique we utilized, and most of the atoms could linearly respond to it. The ultrasound-accelerated aging has also been shown on the aspect of the hardness that was monotonically enhanced with the treating time.
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影响因子：
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作者：
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影响因子：
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作者：
Zhou Zhen Ya;Peng Hai Long;Yu Hai Bin
通讯作者：
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影响因子：
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作者：
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DOI：
10.1002/9781118801017.ch7.10
发表时间：
2021-02
期刊：
Encyclopedia of Glass Science, Technology, History, and Culture
影响因子：
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作者：
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通讯作者：
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