Computational Study on Misfit Dislocation in Ni-Based Superalloys by Quasicontinuum Method

• Djuansjah Joy RP

  Graduate School of Science and Technology, Kobe University

• Yashiro Kisaragi

  Graduate School of Engineering, Kobe University

• Tomita Yoshihiro

  Graduate School of Engineering, Kobe University

抄録

Misfit dislocation at the γ⁄γ′ interface of Ni-based superalloys is investigated using the quasicontinuum simulation. In order to imitate the γ′ phases, nickel embedding function is modified by changing the lattice parameter, bulk modulus and cohesive energy simultaneously. Negative and positive misfits with different magnitudes are set in the simulations. Atomic structure at the interface, spatial distance and strain energy density at the core dislocation are investigated. Shear simulation is also conducted for a flat interface of γ⁄γ′ laminates, while the dislocation propagation and it’s interaction with interface are analyzed.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 49 (11), 2507-2514, 2008

  公益社団法人 日本金属学会

キーワード

• misfit dislocation
• γ⁄γ′ microstructure
• Ni-based superalloys
• quasicontinuum method

詳細情報

• CRID: 1390282679226199680
• NII論文ID: 10024402961
• NII論文ID: 130004453849
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.mb200821
• ISSN: 13475320
• ISSN: 13459678
• NDL書誌ID: 9695671
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9695671
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/49/11/49_MB200821/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可