ナノ結晶分散アモルファス金属の力学特性（粒子寸法効果発現についての分子動力学解析）

DOI 機関リポジトリ HANDLE Web Site Web Site 被引用文献3件 参考文献38件

書誌事項

タイトル別名
  • Mechanical Properties of Amorphous Metal with Dispersed Nanocrystalline Particles (Molecular Dynamics Analysis on Appearance of Particle Size Effects)
  • ナノ ケッショウ ブンサン アモルファス キンゾク ノ リキガク トクセイ リュウシ スンポウ コウカ ハツゲン ニ ツイテ ノ ブンシ ドウリキガク カイセキ
  • Molecular Dynamics Analysis on Appearance of Particle Size Effects
  • 粒子寸法効果発現についての分子動力学解析

この論文をさがす

抄録

Molecular dynamics simulations of tensile deformation of amorphous metals with dispersed nanocrystalline particles were performed in order to reveal the particle size effects on Young's modulus and the flow stress through all crystal volume fraction from 0% (amorphous) to 100% (nanocrystalline metal).The analysis model used in this research contains 32 nano-scaled crystal-particles with random orientation in a unit cell. It became clear that the Young's modulus of the nano-composite is increased as the average particle radius and the crystal volume fraction increase. On the other hand, the flow stress is not affected by the particle size when the crystal volume fraction is lower than 60%. The particle size effects appear gradually for higher crystal volume fraction models. This phenomenon is caused by an increase of the fraction of the grain boundary to the entire interface. We also demonstrate that the elastic constants can be estimated with a higher accuracy by employing a self-consistent compliance model based on the equivalent inclusion method. The Lennard-Jones potential, modified to enforce the continuity at the cut off distance, was used as an interatomic potential. The potential parametes were defined based on Inoue's three basic principles.

収録刊行物

被引用文献 (3)*注記

もっと見る

参考文献 (38)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ