The effect of impact compaction on surface quality of powder discs
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 (Refereed)
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.
Research subject Solid Mechanics
IdentifiersURN: urn:nbn:se:ltu:diva-35193DOI: 10.1051/dymat/2009155Local ID: 99ee2f40-9f74-11de-8293-000ea68e967bISBN: 978-2-7598-0473-3OAI: oai:DiVA.org:ltu-35193DiVA: diva2:1008445
International Conference on the Mechanical and Physical Behaviour of Materials Under Dynamic Loading : 07/09/2009 - 11/09/2009
Godkänd; 2009; 20090912 (parj)2016-09-302016-09-30Bibliographically approved