Thermal stability of ultrafine grained Fe-Cr-Ni alloy

  • Sun C
  • Yang Y
  • Liu Y
 et al. 
  • 27

    Readers

    Mendeley users who have this article in their library.
  • 22

    Citations

    Citations of this article.

Abstract

Equal channel angular pressing was used to refine the microstructure of a Fe-14Cr-16Ni (wt.%) alloy. The as-processed alloy had predominantly equiaxed austenite fine grains with an average grain size of 0.4. μm and a low fraction of deformation induced martensite. Ex situ isothermal annealing experiments showed the fine microstructure was thermally stable up to 673. K, and abnormal grain growth occurred at ~873. K. In situ annealing studies in a transmission electron microscope revealed the coarsening of grains. Analysis of grain growth kinetics from 873 to 1073. K yielded average activation energy of grain growth to be ~207. kJ/mol. The grain growth mechanisms and annealing induced evolution of mechanical properties were discussed. © 2012 Elsevier B.V..

Author-supplied keywords

  • Equal channel angular pressing
  • Fe-Cr-Ni alloy
  • Thermal stability
  • Ultrafine grain

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document

Get full text

Authors

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free