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Constitutive behaviour of WC-Co materials with different grain size sintered under load
KTH, Superseded Departments, Materials Science and Engineering.
KTH, Superseded Departments, Metallurgy.
2004 (English)In: Acta Materialia, ISSN 1359-6454, E-ISSN 1873-2453, Vol. 52, no 7, 1847-1858 p.Article in journal (Refereed) Published
Abstract [en]

The deformation during sintering under an applied uniaxial load was investigated experimentally for two WC-Co cemented carbides with different grain size. The lower applied loads changed only the relative magnitude of axial and radial shrinkages, whereas the higher loads also affected the volumetric strain. Local maxima in shrinkage rate were found at relative densities close to 0.8 for all sintering conditions. The constitutive parameters uniaxial viscosity, Poisson's ratio and sintering stress were empirically modelled as functions of temperature and relative density.

Place, publisher, year, edition, pages
2004. Vol. 52, no 7, 1847-1858 p.
Keyword [en]
sintering, cermets, high temperature deformation, constitutive equations, modelling, cemented carbides, hardmetals, viscosity, compacts, system, models
National Category
Metallurgy and Metallic Materials
URN: urn:nbn:se:kth:diva-23356DOI: 10.1016/j.actamat.2003.12.024ISI: 000221001300009ScopusID: 2-s2.0-1842607232OAI: diva2:342054
QC 20100525 20111028Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2011-10-28Bibliographically approved

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