Computer Simulation of Deformation and Fracture of Small Metal Crystals

  • Masao Doyama
  • Ryoichi Yamamoto
Conference paper


Body centered cubic iron whiskers having [100] and [110] axes were pulled in a super computer. The upper yeild stress close to the theoretical strength was found. After the upper yield stress, phase transformation was observed at the same time the stress was greatly reduced. A new posssible mechanism of twinning is proposed. The whiskers were pulled until it had broken into two pieces. Copper small crystals with and without a crack were sheared. It was observed that edge dislocations were created at the surface and moved through and escaped from the crystals.


Molecular Dynamic Stress Strain Curve Edge Dislocation Interatomic Potential Centered Lattice 
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    Pak, H. M.; Doyama, M.: Journal of the Faculty of Engineering University of Tokyo (B) 30 (1969), 111–4.Google Scholar

Copyright information

© Springer Japan 1986

Authors and Affiliations

  • Masao Doyama
    • 1
  • Ryoichi Yamamoto
    • 1
  1. 1.Department of Metallurgy and Materials Science, Faculty of EngineeringUniversity of TokyoBunkyo-ku, Tokyo, 113Japan

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