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The effect of impact compaction on surface quality of powder discs
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mechanics of Solid Materials.ORCID iD: 0000-0003-0910-7990
Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, Japan.
2009 (English)In: DYMAT 2009, 9th International conference on the mechanical and physical behaviour of materials under dynamic loading: experimental techniques, industrial applications, bio-mechanics, Les Ulis: EDP Sciences, 2009, Vol. 2, 1109-1115 p.Conference paper, Published paper (Refereed)
Abstract [en]

Powder compaction by impact where high strain-rates occurs in the powder is attending an increasing interest. Impact compaction or high velocity compaction (HVC) is a production technique with capacity to significantly improve the mechanical properties of powder metallurgy (PM) parts. The HVC experiments were performed using a laboratory machine with a hydraulically driven hammer. This machine has maximum impact energy of 4 kJ. The powder materials used for the investigation were pre-alloyed water atomized iron based powders. Profile measurements of HVC and conventionally compacted (CC) 25 mm circular discs have been performed with a Wyko NT1100 using vertical scanning interferometry (VSI). For comparable densities the HVC discs have a significantly flatter and smoother upper surface (impact face) compared to CC discs.

Place, publisher, year, edition, pages
Les Ulis: EDP Sciences, 2009. Vol. 2, 1109-1115 p.
National Category
Applied Mechanics
Research subject
Solid Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-35193DOI: 10.1051/dymat/2009155Local ID: 99ee2f40-9f74-11de-8293-000ea68e967bISBN: 978-2-7598-0473-3 (print)OAI: oai:DiVA.org:ltu-35193DiVA: diva2:1008445
Conference
International Conference on the Mechanical and Physical Behaviour of Materials Under Dynamic Loading : 07/09/2009 - 11/09/2009
Note
Godkänd; 2009; 20090912 (parj)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-25Bibliographically approved

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Jonsén, PärHäggblad, Hans-Åke
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