Cryogenic thermal cycling as a new method of production of ductile metallic glass/crystal composites

低温热循环作为延性金属玻璃/晶体复合材料生产的新方法

• 批准号: 16K18244
• 负责人: Ketov Sergey
• 金额: $ 2.58万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2016
• 资助国家: 日本
• 起止时间: 2016-04-01 至 2017-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-16K18244/
• 关键词: Metallic glasses; Rejuvenation; Plasticity; thermal cycling; plasticity

In the present work the effect of cryogenic thermal cycling on metallic glasses (Zr60Cu20(Fe or Co or Ni)10Al10) and metallic glass/crystal composites (Zr62Cu17Fe8.5Al6.5W6) was explored. It was shown that, contrary to the null effect expected from uniformity in metallic glasses, thermal cycling induces structural rejuvenation. This treatment enables metallic glasses to reach less relaxed states of higher energy. However, it was revealed that such a treatment does not lead to universal results. In some cases metallic glasses exhibit improvement of compression plasticity (Fe10) or no change (Ni10) or even its deterioration (Co10). It appears that chemical bonding plays a significant role in plastic response of metallic glasses. Cryothermal treatment results in improvement of maximal plastic strain of the composite by 2% though it starts to decrease with the increase of the number of cycles.

在目前的工作中，探讨了低温热循环对金属玻璃（Zr60Cu20（Fe或Co或Ni）10Al10）和金属玻璃/晶体复合材料（Zr62Cu17Fe8.5Al6.5W6）的影响。结果表明，与金属玻璃均匀性预期的无效效应相反，热循环会导致结构更新。这种处理使金属玻璃能够达到较高能量的不太松弛的状态。然而，据透露，这种治疗方法并不能产生普遍的结果。在某些情况下，金属玻璃表现出压缩塑性的改善（Fe10）或没有变化（Ni10），甚至表现出恶化（Co10）。化学键合似乎在金属玻璃的塑性反应中起着重要作用。低温热处理使复合材料的最大塑性应变提高了 2%，尽管它随着循环次数的增加而开始下降。

项目成果

Rejuvenation of metallic glasses by thermal cycling

通过热循环再生金属玻璃

• 发表时间: 2016
• 作者: 3)Min Chen;Helena Tellez;John Druce;Hiroshige Matsumoto and Truls Norby;H. Ito;S. Ketov
• 通讯作者: S. Ketov

Is thermal cy the cryogenic cling a universal method for metallic glass rejuvenation?

热循环低温吸附是金属玻璃再生的通用方法吗？

• 发表时间: 2016
• 作者: 4)John A. Kilner;John Druce and Helena Tellez;M. Kaneko;S. Ketov
• 通讯作者: S. Ketov