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Green body behaviour of high velocity pressed metal powder
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mechanics of Solid Materials.
Hydropulsor AB.
Hydropulsor AB.
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2007 (English)In: Progress in powder metallurgy: Proceedings of the 2006 Powder metallurgy World congress & Exhibition (PM 2006), held in Busan, Korea, September 24-28, 2006 / [ed] Duk Yong Yoon, Uetikon-Zürich: Trans Tech Publications Inc., 2007, 289-292 p.Conference paper (Refereed)
Abstract [en]

High velocity compaction (HVC) is a production technique with capacity to significantly improve the mechanical properties of powder metallurgy (PM) parts. Several investigations indicate that high-density components can by obtained using HVC. Other characteristics are low ejection force and uniform density. Investigated here are green body data such as density, tensile strength, radial springback, ejection force and surface flatness. Comparisons are performed with conventional compaction using the same pressing conditions. Cylindrical samples of a pre-alloyed water atomized iron powder are used in this experimental investigation. The different behaviour of HVC-pressed green bodies compared to conventional pressed green bodies are analysed and discussed. The HVC process in this study resulted in a better compressibility curve and lower ejection force compared to conventional quasi static pressing. Vertical scanning interferometry (VSI) measurements show that the HVC process gives flatter sample surfaces.

Place, publisher, year, edition, pages
Uetikon-Zürich: Trans Tech Publications Inc., 2007. 289-292 p.
, Materials Science Forum, ISSN 0255-5476 ; 234-236
Research subject
Solid Mechanics
URN: urn:nbn:se:ltu:diva-31969DOI: 10.4028/ 34547532939Local ID: 64c563d0-e796-11db-8a98-000ea68e967bISBN: 0-87849-419-7OAI: diva2:1005203
Powder Metallurgy World Congress & Exhibition : 24/08/2006 - 28/08/2006
Validerad; 2007; 20070216 (cira)Available from: 2016-09-30 Created: 2016-09-30Bibliographically approved

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Jonsen, PärHäggblad, Hans-åke
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