Prediction of pressure-promoted thermal rejuvenation in metallic glasses

Narumasa Miyazaki, Masato Wakeda, Yun Jiang Wang, Shigenobu Ogata

研究成果: Article査読

48 被引用数 (Scopus)

抄録

Rejuvenation is the structural excitation of glassy materials, and is a promising approach for improving the macroscopic deformability of metallic glasses. This atomistic study proposes the application of compressive hydrostatic pressure during the glass-forming quenching process and demonstrates highly rejuvenated glass states that have not been attainable without the application of pressure. Surprisingly, the pressure-promoted rejuvenation process increases the characteristic short- and medium-range order, even though it leads to a higher-energy glassy state. This 'local order'-'energy' relation is completely opposite to conventional thinking regarding the relation, suggesting the presence of a well-ordered high-pressure glass/high-energy glass phase. We also demonstrate that the rejuvenated glass made by the pressure-promoted rejuvenation exhibits greater plastic performance than as-quenched glass, and greater strength and stiffness than glass made without the application of pressure. It is thus possible to tune the mechanical properties of glass using the pressure-promoted rejuvenation technique.

本文言語English
論文番号16013
ジャーナルnpj Computational Materials
2
DOI
出版ステータスPublished - 2016 6月 24
外部発表はい

ASJC Scopus subject areas

  • モデリングとシミュレーション
  • 材料科学(全般)
  • 材料力学
  • コンピュータ サイエンスの応用

フィンガープリント

「Prediction of pressure-promoted thermal rejuvenation in metallic glasses」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル