Affordable Access

Publisher Website

Impact of gamma′ particle coarsening on the critical resolved shear stress of nickel-base superalloys with low aluminium and/or titanium content

Authors
Journal
Journal of Nuclear Materials
0022-3115
Publisher
Elsevier
Publication Date
Volume
416
Identifiers
DOI: 10.1016/j.jnucmat.2010.11.051

Abstract

Abstract In Ni-base superalloys with low Al and/or Ti content the precipitation and subsequent coarsening of γ′ particles at intermediate temperatures contribute to the degradation of the mechanical properties of the alloy. In the present paper the coarsening process is modelled and the change of the critical resolved shear stress of the alloy due to coarsening of the γ′ particles is calculated by means of statistical analysis of the depinning of a single gliding edge dislocation. It is found that the contribution of γ′ hardening to the critical resolved shear stress at 973 K reduces to more than half of its original value in less than one year.

There are no comments yet on this publication. Be the first to share your thoughts.