Modelling of sintering kinetics and parameters determination for Wc-Co by in situ optical dilatometry method

Baosheng Zhang, MM Gasik, Jarmo Ylikerälä

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Abstract

A model for viscosity, sintering stress, densification rate, Poison's rate has been developed for sintering of functionally gradated hard metals. In order to optimise sintering process of WC-Co hard metals, first all parameters of sintering kinetics like viscosity for those hard metal materials have been determined experimentally with a 2-D optical dilatometer to develop sintering modelling. The parameters has been applied directly for a finite element simulation of FGM hard metal plate for sintering process. As a example, a sintering simulation of WC-Co graded plate have been done to explore variation of process parameters for optimisation of sintering. It was shown that optimal green density distribution together with cobalt and grain size gradients retain. flat shape of the plate, and this combination also decreases thermal stresses.

Original languageEnglish
Title of host publicationEURO PM 2002: HARD MATERIALS PROCEEDINGS
Pages297-302
Number of pages6
Publication statusPublished - 2002
MoE publication typeA4 Article in a conference publication
EventEuropean Conference on Hard Materials and Diamond Tooling - Lausanne, Switzerland
Duration: 7 Oct 20029 Oct 2002

Conference

ConferenceEuropean Conference on Hard Materials and Diamond Tooling
CountrySwitzerland
CityLausanne
Period07/10/200209/10/2002

Keywords

  • POWDER

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