Modeling morphological evolution and rafting of γ′ precipitates in Ni-Al superalloys under applied stresses

D. Y. Li, Long-qing Chen

Research output: Contribution to conferencePaper

1 Scopus citations

Abstract

The morphological evolution and rafting of γ′ phase particles in Ni-Al superalloys under applied stresses were investigated. A computer model based on a diffuse-interface phase-field model was employed. In this model, a two-phase microstructure is described by a concentration field and a three-component long-range order parameter field. The temporal evolution of the field variables was determined by solving the non-linear Ginzburg-Landau and Cahn-Hilliard equations. The elastic inhomogeneity was taken into account. It is demonstrated that an applied stress may result in a raft-like microstructure and the rafting of γ′ phase is dependent on the magnitude, the applying direction, and the type of the applied stress.

Original languageEnglish (US)
Pages119-127
Number of pages9
StatePublished - Jan 1 1998
EventProceedings of the 1998 TMS Annual Meeting - San Antonio, TX, USA
Duration: Feb 15 1998Feb 19 1998

Other

OtherProceedings of the 1998 TMS Annual Meeting
CitySan Antonio, TX, USA
Period2/15/982/19/98

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

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    Li, D. Y., & Chen, L. (1998). Modeling morphological evolution and rafting of γ′ precipitates in Ni-Al superalloys under applied stresses. 119-127. Paper presented at Proceedings of the 1998 TMS Annual Meeting, San Antonio, TX, USA, .