Paper Title:
Precipitation Microstructure of Ultrafine-Grained Al-Zn-Mg Alloys Processed by Severe Plastic Deformation
  Abstract

Supersaturated Al-4.8Zn-1.2Mg-0.14Zr and Al-5.7Zn-1.9Mg-0.35Cu (wt.%) alloys were processed by Equal-Channel Angular Pressing (ECAP) at 200°C. The crystallite size distribution and the characteristic parameters of the dislocation structure of both Al matrix and precipitates were determined by X-ray diffraction line profile analysis, which has been complemented by transmission electron microscopy (TEM) observations. Results of these investigations show that the bulk ultrafine-grained microstructure with high dislocation density produced by ECAP has strong influence on the precipitation process, resulting in high strength in both alloys.

  Info
Periodical
Materials Science Forum (Volumes 537-538)
Edited by
J. Gyulai and P.J. Szabó
Pages
169-176
DOI
10.4028/www.scientific.net/MSF.537-538.169
Citation
J. Gubicza, I. Schiller, N. Q. Chinh, J. Illy, "Precipitation Microstructure of Ultrafine-Grained Al-Zn-Mg Alloys Processed by Severe Plastic Deformation ", Materials Science Forum, Vols. 537-538, pp. 169-176, 2007
Online since
February 2007
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