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Titel: Wear assessment of cemented carbide tools (WC–Co) with defined cutting edges under grinding-like service conditions
VerfasserIn: Fang, Shiqi
Sprache: Englisch
Titel: Wear
Bandnummer: 476
Verlag/Plattform: Elsevier
Erscheinungsjahr: 2021
Freie Schlagwörter: Cemented carbide
Micro-texturing
Surface functionalization
Cutting tool
Abrasive machining
Wear
Adhesion
Surface integrity
DDC-Sachgruppe: 500 Naturwissenschaften
Dokumenttyp: Journalartikel / Zeitschriftenartikel
Abstract: In a previous study, micro-scale pyramid structures were produced on cemented carbide grades to form cutting edges (in the range 50 μm–100 μm) on their cutting surfaces. The pyramids were machined by an ultrashort pulse laser, exhibiting excellent surface integrity and defined geometric features. They are similar in size and shape to the abrasives used in grinding tools. In this study, hexagonal- and square-shaped pyramid structures are produced on four different cemented carbide grades. The wear of these textured cemented carbide tools was quantitatively and qualitatively assessed after grinding-like service conditions. More precisely, the geometric feature changes were measured, and cross-sectional characterization was conducted to reveal wear modalities of the cutting edges. Wear was detected mainly on the pyramids in the effective contact area of the tools, in the form of material loss resulting from grain cracking and adhesion. Hardness was a decisive factor in wearing the pyramids, and tools with hardness more than 1100 HV30 showed reduced wear. Pyramid shape also influenced the degree of wear, as the hexagon pyramids experienced less height reduction (up to 5%) than the square ones. Adhesion turned out to be significant on the cemented carbide grades with high binder content (about 30 wt%).
DOI der Erstveröffentlichung: 10.1016/j.wear.2021.203744
URL der Erstveröffentlichung: https://www.sciencedirect.com/science/article/abs/pii/S0043164821001332
Link zu diesem Datensatz: urn:nbn:de:bsz:291--ds-377124
hdl:20.500.11880/34112
http://dx.doi.org/10.22028/D291-37712
ISSN: 0043-1648
Datum des Eintrags: 26-Okt-2022
Fakultät: NT - Naturwissenschaftlich- Technische Fakultät
Fachrichtung: NT - Materialwissenschaft und Werkstofftechnik
Professur: NT - Prof. Dr. Dirk Bähre
Sammlung:SciDok - Der Wissenschaftsserver der Universität des Saarlandes

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