Paper Title:
Grain Refinement in a Commercial Al-Mg-Sc-Zr Alloy during Hot ECAP
  Abstract

The microstructure evolution of an as-cast commercial Al-Mg-Sc-Zr alloy during Equal- Channel Angular Pressing (ECAP) at 325°C was investigated. In the early stages of deformation strain induced boundaries were created within the initial coarse grains and constitute the deformation bands. Repeated ECAP led to an increase of the number and misorientation of deformation bands. Further straining up to e~8 resulted in the formation of a new fine-grained structure with an average crystallite size of 1.2 /m. It is concluded that the progressive increase of the misorientation of deformation induced boundaries is the main mechanism of structure formation under high temperature ECAP.

  Info
Periodical
Materials Science Forum (Volumes 584-586)
Edited by
Yuri Estrin and Hans Jürgen Maier
Pages
722-727
DOI
10.4028/www.scientific.net/MSF.584-586.722
Citation
O. Sukhopar, O. Sitdikov, G. Gottstein, R. Kaibyshev, "Grain Refinement in a Commercial Al-Mg-Sc-Zr Alloy during Hot ECAP", Materials Science Forum, Vols. 584-586, pp. 722-727, 2008
Online since
June 2008
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$32.00
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