Analysis of Single-Crystalline Iron Tensile Deformation Using Approximation Neglecting Fluctuations and Molecular Dynamics Simulation

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概要

• 論文の詳細を見る

• This paper describes the investigation of brittle to ductile transition in alpha-iron using an approximation in which fluctuations are neglected, and a molecular dynamics simulation. By introducing two kinds of forces, the tendency to slip or cleave is evaluated, using an approximation in which the atom position fluctuations are neglected. For ideal crystals, expanded alpha-iron single crystals tend to be more ductile than compressed ones in the case of uniform tensile deformation. Crack propagation and blunting processes are simulated in alpha-iron using a molecular dynamics approach utilizing the Johnson potential. The simulations show that expanded crystals are likely to undergo shear breakdown and that compressed ones are likely to fail due to cleavage. The results obtained from molecular dynamics simulations are found to be consistent with those obtained from the analysis that neglects fluctuations.

• 社団法人日本機械学会の論文
• 1994-04-15

著者

• SASAKI Naoya

  Mechanical Engineering Research Laboratory, Hitachi, Ltd.

• Iwasaki T

  Hitachi Ltd. Ibaraki Jpn

• Iwasaki Tomio

  Mechanical Engineering Res. Lab. Hitachi Ltd.

• CHIBA Norimasa

  Mechanical Engineering Research Laboratory, Hitachi Ltd.

• Abe Yasuo

  Mechanical Engineering Research Laboratory, Hitachi Ltd.

• Chiba Norimasa

  Mechanical Engineering Research Laboratory Hitachi Ltd.

• Chiba Norimasa

  Mechanical Engineering Lab. Hitachi Ltd.

• Yasukawa A

  Hokkaido Univ. Sapporo Jpn

• Sasaki N

  Hitachi Ltd. Ibaraki Jpn

• Sasaki Naoya

  Mechanical Engineering Research Laboratory Hitachi Ltd.

• IWASAKI Tomio

  Mechanical Eng. Res. Laboratory, Hitachi, Ltd.

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