Modeling grain size and strain rate in linear friction welded Waspaloy

Download
  1. (PDF, 849 KB)
  2. Get@NRC: Modeling grain size and strain rate in linear friction welded Waspaloy (Opens in a new window)
DOIResolve DOI: http://doi.org/10.1007/s11661-013-1767-y
AuthorSearch for: ; Search for: ; Search for: ; Search for: ; Search for:
TypeArticle
Journal titleMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
ISSN1073-5623
Volume44
Issue9
Pages42304238; # of pages: 9
SubjectDeformation temperatures; High temperature deformation; Isothermal compressions; Linear friction; Microstructural investigation; Ni-base superalloys; Recrystallized grain sizes; Strain rate sensitivity; Activation energy; Compression testing; Crystal microstructure; Deformation; Dynamic recrystallization; Friction welding; Grain size and shape; Nickel; Strain rate
AbstractThe high-temperature deformation behavior of the Ni-base superalloy, Waspaloy, using uniaxial isothermal compression testing was investigated at temperatures above the γ′ solvus, 1333 K, 1373 K, 1413 K (1060 C, 1100 C, 1140 C) for constant true strain rates of 0.001, 0.01, 0.1, 1 s -1 and up to a true strain of 0.83. Flow softening and microstructural investigation indicated that dynamic recrystallization took place during deformation. For the investigated conditions, the strain rate sensitivity factor and the activation energy of hot deformation were 0.199 and 462 kJ/mol, respectively. Constitutive equations relating the dynamic recrystallized grain size to the deformation temperature and strain rate were developed and used to predict the grain size and strain rate in linear friction-welded (LFWed) Waspaloy. The predictions were validated against experimental findings and data reported in the literature. It was found that the equations can reliably predict the grain size of LFWed Waspaloy. Furthermore, the estimated strain rate was in agreement with finite element modeling data reported in the literature. © 2013 The Minerals, Metals & Materials Society and ASM International.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); Aerospace
Peer reviewedYes
NPARC number21269708
Export citationExport as RIS
Report a correctionReport a correction
Record identifiereabdda50-4c43-463d-a2ab-d8d3f47d880b
Record created2013-12-13
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)