Please use this identifier to cite or link to this item: doi:10.22028/D291-29844
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Title: Microstructural and Metallurgical Assessment of the Laser-Patterned Cemented Tungsten Carbide (WC-CoNi)
Author(s): Fang, Shiqi
Soldera, Flavio
Rosenkranz, Andreas
Herrmann, Thomas
Bähre, Dirk
Llanes, Luis
Mücklich, Frank
Language: English
Title: Procedia manufacturing
Volume: 26
Startpage: 198
Endpage: 204
Publisher/Platform: Elsevier
Year of Publication: 2018
Publikation type: Journal Article
Abstract: Cemented carbide is difficult to machine using traditional chip-removal methods due to its hardness. Electrical discharge machining (EDM) is the common method applied to shape cemented carbides because high geometric precision can be achieved. However, some important defects (pores, residual stresses or oxidation products) can be induced due to thermal reactions. Ultra-short pulse laser processing can also provide high precision and meanwhile effectively avoid these defects due to its short laser-matter reaction time. In this paper, three different patterns on WC-CoNi cemented carbides for tribological purposes, namely line-like patterns, dimples and grooves, have been created using different laser set-ups with pulse duration in the range of nanoseconds (10-9s), picoseconds (10-12s) and femtoseconds (10-15s). Microstructural and metallurgical changes of modified surfaces have been studied. Laser scanning microscopy (LSM) is conducted to measure the pattern dimensions. Focused ion beam (FIB) in combination with scanning electron microscope (SEM) is used to investigate the microstructural changes of the patterned materials.
DOI of the first publication: 10.1016/j.promfg.2018.07.027
URL of the first publication: https://www.sciencedirect.com/science/article/pii/S2351978918306978
Link to this record: hdl:20.500.11880/28433
http://dx.doi.org/10.22028/D291-29844
ISSN: 2351-9789
Date of registration: 5-Dec-2019
Faculty: NT - Naturwissenschaftlich- Technische Fakultät
Department: NT - Materialwissenschaft und Werkstofftechnik
Professorship: NT - Prof. Dr. Dirk Bähre
Collections:UniBib – Die Universitätsbibliographie

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