Deformation and densification behaviours of nickel-based superalloy during hot isostatic pressing

Hosam ElRakayby, KiTae Kim

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Hot isostatic pressing of nickel-based superalloys has important applications for manufacturing near-net shape parts such as turbine disks and jet engine parts, which have to operate at high temperatures. Finite element modelling can be used to predict deformation and densification behaviour of such superalloys. Thus, the cost and time of trial and error to obtain the required geometry of the part can be reduced, such that near-net shape parts can be manufactured more economically. Numerical simulations were carried out by implementing the model of ElRakayby and Kim into Abaqus-FEA. The model parameters (relative density functions f and c) for the nickel-based superalloy were obtained from the creep response and compressive strength of porous and solid powder compacts at high a temperature. The agreement between finite element calculations and the experimental data was good for densification, shape change and density distribution of nickel-based superalloy during hot isostatic pressing.
Original languageEnglish
Pages (from-to)293-300
Number of pages8
JournalPowder Metallurgy
Volume60
Issue number4
DOIs
Publication statusPublished - 16 Mar 2017

Keywords

  • densification
  • deformation behaviour
  • nickel-based superalloy
  • isostatic pressing
  • finite element modelling

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