Molecular Dynamics / Discrete Dislocation Dynamics Study on Dislocation Behavior in Ni-Based Superalloys

DOI

Bibliographic Information

Other Title
  • Ni基超合金中における転位挙動の分子動力学・離散転位動力学解析

Abstract

In the present study, dislocation behaviors in the gamma/gamma-prime microstructure of Ni-based superalloys are investigated by means of molecular dynamics (MD) and discrete dislocation (DD) dynamics simulations. MD results show that a dislocation is not pinned at the gamma/gamma-prime interface but with the stress field around the gamma-prime precipitates. A DDD--FEM analysis is then implemented to evaluate the stress field correctly and treat the image force on dislocations from surfaces and precipitates. The result shows that a dislocation is decelerated and piled at the inteface of the matrix/precipitate with the stress field.

Journal

Details 詳細情報について

  • CRID
    1390001205589096576
  • NII Article ID
    130005020150
  • DOI
    10.11345/japannctam.53.0.19.0
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

Report a problem

Back to top