Paper Title:
The Evolution of Homogeneity during Processing of Commercial Purity Aluminium by ECAP
  Abstract

Billets of a commercial purity aluminium Al-1050 alloy were processed by equal-channel angular pressing (ECAP) for up to a maximum of 6 passes. Following processing, the billets were sectioned and hardness measurements were recorded on both longitudinal and transverse sections. These measurements showed the hardness increases significantly in the first pass and continues to increase by small amounts in subsequent passes. Initially, there are regions of lower hardness running in bands near the top and bottom surface of each billet. The region of lower hardness near the upper surface disappears with increasing numbers of passes but near the bottom surface the lower hardness remains even after 6 passes. The results show that, neglecting the small region near the bottom of the billet, there is an excellent potential for achieving microstructural homogeneity within the Al-1050 alloy after pressing through a sufficient number of passes in ECAP.

  Info
Periodical
Materials Science Forum (Volumes 584-586)
Edited by
Yuri Estrin and Hans Jürgen Maier
Pages
446-451
DOI
10.4028/www.scientific.net/MSF.584-586.446
Citation
S. N. Alhajeri, N. Gao, T. G. Langdon, "The Evolution of Homogeneity during Processing of Commercial Purity Aluminium by ECAP ", Materials Science Forum, Vols. 584-586, pp. 446-451, 2008
Online since
June 2008
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Price
$32.00
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