Paper Title:
Comparison of Different Extrusion Methods for Compaction of Powders
  Abstract

Densification of metallic powders by means of extrusion is regarded as a very attractive processing technique that allows obtaining a high level of relative density of the compact. However, the uniformity of the relative density depends on that of strain distribution and on the processing parameters. Several variants of extrusion can be used for compaction of metal particulates, including the conventional extrusion (CE) and equal channel angular pressing (ECAP), often referred to as equal-channel angular extrusion. Each of these processes has certain advantages and drawbacks with respect to compaction. A comparative study of these two extrusion processes influencing the relative density of compacts has been conducted by numerical simulation using commercial finite element software DEFORM2D. The results have been validated by experiments with titanium and magnesium powders and chips.

  Info
Periodical
Materials Science Forum (Volumes 667-669)
Edited by
Jing Tao Wang, Roberto B. Figueiredo and Terence G. Langdon
Pages
57-62
DOI
10.4028/www.scientific.net/MSF.667-669.57
Citation
A. Molotnikov, R. Lapovok, T. Peng, Y. Estrin, "Comparison of Different Extrusion Methods for Compaction of Powders", Materials Science Forum, Vols. 667-669, pp. 57-62, 2011
Online since
December 2010
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Price
$32.00
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