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Implementation of advanced characterisation techniques for assessment of grinding effects on the surface integrity of WC-Co cemented carbides
Linköping University, Department of Physics, Chemistry and Biology, Biomolecular and Organic Electronics. Linköping University, Faculty of Science & Engineering. Univ Politecn Cataluna, Spain; AMES Sintered Met Components, Spain.
Univ Politecn Cataluna, Spain; Univ Politecn Cataluna, Spain.
SECO Tools AB, Sweden.
Linköping University, Department of Physics, Chemistry and Biology, Nanostructured Materials. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0002-2286-5588
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2018 (English)In: Powder Metallurgy, ISSN 0032-5899, E-ISSN 1743-2901, Vol. 61, no 2, p. 100-105Article in journal (Refereed) Published
Abstract [en]

Grinding is a key step on the manufacturing process of WC-Co cemented carbides (hardmetals). In this work, an investigation of grinding effects on the surface integrity of hardmetals is conducted. It is done by combining diverse advanced characterisation techniques: X-ray diffraction, field emission-scanning electron microscopy, electron back scatter diffraction, focused ion beam - 3D tomography and transmission electron microscopy. The study is carried out in a fine-grained WC-Co grade. Besides ground state, polished surface finish condition is assessed for comparison purposes. It is evidenced that grinding induces significant alterations: 3D tomography illustrates microcracking exists down to 2.5 mu m depth with a highly anisotropic distribution at the subsurface, large compressive residual stresses extending until subsurface levels of about 12 mu m, and phase transformation of binder from the original fcc phase into the hcp one, as well as severe plastic deformation observed within the binder at the surface level.

Place, publisher, year, edition, pages
Taylor & Francis, 2018. Vol. 61, no 2, p. 100-105
Keywords [en]
Grinding; cemented carbides; surface integrity; 3D tomography; residual stresses; binder phase
National Category
Metallurgy and Metallic Materials
Identifiers
URN: urn:nbn:se:liu:diva-147445DOI: 10.1080/00325899.2018.1436640ISI: 000428947600003Scopus ID: 2-s2.0-85042232883OAI: oai:DiVA.org:liu-147445DiVA, id: diva2:1206334
Note

Funding Agencies|MINECO/FEDER [MAT 2015-70780-C4-3-P]; Erasmus Mundus joint European Doctoral Programme DocMASE

Available from: 2018-05-16 Created: 2018-05-16 Last updated: 2018-05-24Bibliographically approved

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