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Abrasive wear resistance of starch consolidated and sintered high speed steel
Sandvik Materials Technology.
Dalarna University, School of Technology and Business Studies, Material Science.
2009 (English)In: Wear, ISSN 0043-1648, E-ISSN 1873-2577, Vol. 267, no 9-10, p. 1482-1489Article in journal (Refereed) Published
Abstract [en]

The abrasive wear resistance of starch consolidated (SC) and super solidus liquid phase sintered (SLPS) M3/2 high speed steel (HSS) samples have been evaluated by a two-body micro-abrasion test (low stress abrasion), using 6 ┬Ám diamond abrasive particles, and a three-body abrasion test (high stress abrasion), using significantly larger abrasive particles of blast furnace slag (600 HV) and silicon carbide (2400 HV), respectively. In the tests a commercial powder metallurgical (PM) HSS was used as a reference material. The results show that the microstructure of the SC and SLPS HSS samples is strongly dependent on the sintering temperature used. With increasing temperature the microstructure ranges from a porous (5% porosity) relatively fine grained low temperature sintered microstructure to a fully dense relatively coarse grained high temperature sintered microstructure with eutectic carbides/carbide networks. However, despite the pronounced microstructural differences displayed by the as-sintered HSS microstructures these show a relatively high abrasive wear resistance, comparable with that of a HIPed HSS reference, both under low and high stress abrasion contact conditions. The characteristic features of the low and high temperature sintered microstructures, i.e. the pores and coarse eutectic carbides/carbide networks, only show a limited impact on the wear rate and the wear mode (dominant wear mechanism). The results obtained imply that near net shaped components manufactured by starch consolidation and super solidus liquid phase sintering might be of interest in tribological applications.

Place, publisher, year, edition, pages
Elsevier , 2009. Vol. 267, no 9-10, p. 1482-1489
Keywords [en]
High speed steel; starch consolidation; two-body abrasion; three-body abrasion; microstructure; porosity
National Category
Manufacturing, Surface and Joining Technology
Identifiers
URN: urn:nbn:se:du-3758DOI: 10.1016/j.wear.2009.03.022ISI: 000274584500017OAI: oai:dalea.du.se:3758DiVA, id: diva2:520021
Available from: 2009-03-03 Created: 2009-03-03 Last updated: 2017-12-07Bibliographically approved

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CiteExportLink to record
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  • apa
  • ieee
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  • vancouver
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  • nn-NB
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