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Thermally induced surface integrity changes of ground WC-Co hardmetals
Linköpings universitet, Institutionen för fysik, kemi och biologi, Biomolekylär och Organisk Elektronik. Linköpings universitet, Tekniska fakulteten. University of Politecn Cataluna, Spain.
University of Politecn Cataluna, Spain; University of Politecn Cataluna, Spain.
SECO Tools AB, Sweden.
Linköpings universitet, Institutionen för fysik, kemi och biologi, Nanostrukturerade material. Linköpings universitet, Tekniska fakulteten.ORCID-id: 0000-0002-2286-5588
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2016 (Engelska)Ingår i: 3RD CIRP CONFERENCE ON SURFACE INTEGRITY, Elsevier, 2016, Vol. 45, s. 91-94Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

Ground hardmetals are exposed to high temperatures during both processing (e.g. coating deposition) and use (e.g. as a cutting tool). However, studies on thermally induced changes of surface integrity are limited. Here we address this by means of FIB/FESEM and EBSD investigation, with special focus on the binder phase characterization. Our findings indicate that thermal treatment causes two main surface modifications. First, an unexpected microporosity appears in the binder within the subsurface layer when ground surfaces are heated. Second, the metallic phase underneath the ground surface experiences metallurgical changes, in terms of grain and crystallographic phase structures. The mechanisms responsible for these modifications of the binder are discussed in terms of grinding-induced and thermally-reversed phase transformation as well as recrystallization phenomena. We also note that no additional heat treatment related changes such as microcracking and carbide fragmentation in the subsurface layer, are discerned. (C) 2016 The Authors. Published by Elsevier B.V.

Ort, förlag, år, upplaga, sidor
Elsevier, 2016. Vol. 45, s. 91-94
Serie
Procedia CIRP, ISSN 2212-8271
Nyckelord [en]
Grinding; Thermal effect; Surface integrity; Cemented Carbides
Nationell ämneskategori
Bearbetnings-, yt- och fogningsteknik
Identifikatorer
URN: urn:nbn:se:liu:diva-144007DOI: 10.1016/j.procir.2016.02.092ISI: 000417326500023Scopus ID: 2-s2.0-84978715614OAI: oai:DiVA.org:liu-144007DiVA, id: diva2:1170177
Konferens
3rd CIRP Conference on Surface Integrity, JUN 08-10, 2016, Charlotte, NC
Anmärkning

Funding Agencies|Spanish MINECO [MAT 2012-34602]; EUs Erasmus Mundus joint European Doctoral Programme DocMASE

Tillgänglig från: 2018-01-02 Skapad: 2018-01-02 Senast uppdaterad: 2018-01-16Bibliografiskt granskad

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Johansson-Jõesaar, Mats P.

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Yang, JieOdén, MagnusJohansson-Jõesaar, Mats P.
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Biomolekylär och Organisk ElektronikTekniska fakultetenNanostrukturerade material
Bearbetnings-, yt- och fogningsteknik

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