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Geometry effects during sintering of graded cemented carbides: Modelling of microstructural evolution and mechanical properties
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering. (Structures)ORCID iD: 0000-0001-5891-0638
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering. Sandvik Coromant R&D.
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Computational Thermodynamics. Thermo-Calc AB.ORCID iD: 0000-0001-8797-4585
2019 (English)In: Results in Materials, ISSN 2590-048X, Vol. 1, article id 100008Article in journal (Refereed) Published
Abstract [en]

Cemented carbides with mesoscopically non-homogeneous properties by design represent a potential to enhanceperformance in metal cutting and rock drilling. Development of in-homogeneous structured hard materialsthrough an ICME approach requires a thorough understanding of diffusion kinetics during solid and liquid statesintering. In this work, we used thermodynamics and diffusion kinetics modelling tools to predict the micro-structure and resulting properties of cemented carbide composites. First, we designed and gradient sintered two(WC-TiCN-Co) cemented carbides with different nitrogen to titanium ratios. Second, we reproduced the experi-mental results in 2D by means of thermodynamic and kinetic simulations. In the last step we calculated fracturetoughness KIC, and Vickers hardness of cemented carbides. The agreement between simulations and experimentalresults is fair and acceptable

Place, publisher, year, edition, pages
2019. Vol. 1, article id 100008
Keywords [en]
ICME Diffusion Cemented carbides Gradient sintering Hardness Fracture toughness
National Category
Engineering and Technology
Research subject
Materials Science and Engineering
Identifiers
URN: urn:nbn:se:kth:diva-258031DOI: 10.1016/j.rinma.2019.100008OAI: oai:DiVA.org:kth-258031DiVA, id: diva2:1349687
Projects
Sintring av inhomogena strukturer för förbättra prestanda
Funder
Swedish Foundation for Strategic Research , RMA15-0062
Note

QC 20190916

Available from: 2019-09-09 Created: 2019-09-09 Last updated: 2019-09-16Bibliographically approved

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gemoetry(2992 kB)45 downloads
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Salmasi, ArminBlomqvist, AndreasLarsson, Henrik
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