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首页> 外文期刊>Materials Science and Engineering >Influence of annealing on the elastic properties and microstructure of Cu_(58.1)Zr_(35.9)Al_6 bulk metallic glass
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Influence of annealing on the elastic properties and microstructure of Cu_(58.1)Zr_(35.9)Al_6 bulk metallic glass

机译：退火对Cu_（58.1）Zr_（35.9）Al_6块状金属玻璃的弹性和显微组织的影响

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摘要

The present paper aims to study the crystallization behavior and the elastic properties of Cu_(58.1)Zr_(35.9)Al_6 bulk metallic glass using ultrasonic pulse focusing method. It is found that the changes of the elastic properties and microstructure can be classified into three stages corresponding to different temperature regions. Below the glass transition temperature T_g, no structural change was observed by X-ray diffraction, and annealing only induced structural relaxation. After annealing at the super-cooled liquid region, the new phase Cu_(10)Zr_7 formed, meanwhile, some anomalous acoustic and elastic behaviors occurred near T_g (490). Above the onset crystallization temperature T_x, the elastic properties increased further with the elevated temperature and Cu_8Zr_3 phase was also observed besides Cu_(10)Zr_7 phase. The annealing has a significant effect on the elastic property and microstructure of Cu_(58.1)Zr_(35.9)Al_6 bulk metallic glass, which is closely related to the annihilation of quenched-in free volume and the improvement of the atom order degree.
机译：本文旨在研究利用超声波脉冲聚焦法研究Cu_（58.1）Zr_（35.9）Al_6块状金属玻璃的结晶行为和弹性性能。发现弹性性能和微观结构的变化可分为三个阶段，分别对应于不同的温度区域。在玻璃化转变温度T_g以下，通过X射线衍射未观察到结构变化，并且退火仅引起结构弛豫。在过冷液体区域退火后，形成了新相Cu_（10）Zr_7，同时在T_g附近发生了一些异常的声学和弹性行为（490）。在开始结晶温度T_x以上，弹性性能随着温度的升高而进一步增加，并且除了Cu_（10）Zr_7相以外，还观察到Cu_8Zr_3相。退火对Cu_（58.1）Zr_（35.9）Al_6块状金属玻璃的弹性和显微组织有显着影响，这与淬火自由体积的hil灭和原子序数的提高密切相关。

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  • 来源
    《Materials Science and Engineering》 |2010年第15期|p.3416-3419|共4页
  • 作者

    Ping Li; Jingyan Hao; Jialong Tan; Qing Wang;

  • 作者单位

    Department of Material Science and Engineering, Dalian University of Technology, Dalian 116024, PR China;

    Department of Material Science and Engineering, Dalian University of Technology, Dalian 116024, PR China;

    Department of Material Science and Engineering, Dalian University of Technology, Dalian 116024, PR China;

    Department of Material Science and Engineering, Dalian University of Technology, Dalian 116024, PR China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    metallic glasses; microstructure; ultrasonic; elastic property;

    机译：金属玻璃微观结构超声波弹性;

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