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Comparison of different extrusion methods for compaction of powders

conference contribution
posted on 2011-01-01, 00:00 authored by A Molotnikov, Rimma LapovokRimma Lapovok, T Peng, Y Estrin
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.

History

Volume

667-669

Pagination

57-62

Location

Nanjing, China

Start date

2011-03-21

End date

2011-03-25

ISSN

0255-5476

ISBN-13

9783037850077

Language

eng

Publication classification

E Conference publication, E1.1 Full written paper - refereed

Copyright notice

2011, Trans Tech Publications

Editor/Contributor(s)

Wang JT, Figueiredo RB, Langdon TG

Title of proceedings

SPD5 : Selected Peer Reviewed Papers from the 5th International Conference on Nanomaterials by Severe Plastic Deformation

Event

Nanomaterials by Severe Plastic Deformation. International Conference (5th : 2011 : Nanjing, China)

Publisher

Trans Tech Publications

Place of publication

Zurich, Switzerland

Series

Materials Science Forum