Tribological and Wear Performance of Carbide Tools with TiB2 PVD Coating under Varying Machining Conditions of TiAl6V4 Aerospace Alloy
| Autor: | German S. Fox-Rabinovich, M.S.I. Chowdhury, Danielle Covelli, M.A. Shalaby, L.S. Shuster, Stephen C. Veldhuis, Edinei Locks Junior, Pietro Stolf, Sergey Chertovskikh, Carlos Alberto Schuch Bork, Amr Elfizy, Jose Mario Paiva |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
0209 industrial biotechnology
Materials science 02 engineering and technology engineering.material Edge (geometry) Carbide 020901 industrial engineering & automation 0203 mechanical engineering Coating Machining Materials Chemistry cutting tool wear Tool wear machining of TiAl6V4 TiB2 coated tool machining conditions FEM Cutting tool Metallurgy Surfaces and Interfaces Tribology Surfaces Coatings and Films 020303 mechanical engineering & transports lcsh:TA1-2040 Physical vapor deposition engineering lcsh:Engineering (General). Civil engineering (General) |
| Zdroj: | Coatings; Volume 7; Issue 11; Pages: 187 Coatings, Vol 7, Iss 11, p 187 (2017) |
| ISSN: | 2079-6412 |
| DOI: | 10.3390/coatings7110187 |
| Popis: | Tribological phenomena and tool wear mechanisms during machining of hard-to-cut TiAl6V4 aerospace alloy have been investigated in detail. Since cutting tool wear is directly affected by tribological phenomena occurring between the surfaces of the workpiece and the cutting tool, the performance of the cutting tool is strongly associated with the conditions of the machining process. The present work shows the effect of different machining conditions on the tribological and wear performance of TiB2-coated cutting tools compared to uncoated carbide tools. FEM modeling of the temperature profile on the friction surface was performed for wet machining conditions under varying cutting parameters. Comprehensive characterization of the TiB2 coated vs. uncoated cutting tool wear performance was made using optical 3D imaging, SEM/EDX and XPS methods respectively. The results obtained were linked to the FEM modeling. The studies carried out show that during machining of the TiAl6V4 alloy, the efficiency of the TiB2 coating application for carbide cutting tools strongly depends on cutting conditions. The TiB2 coating is very efficient under roughing at low speeds (with strong buildup edge formation). In contrast, it shows similar wear performance to the uncoated tool under finishing operations at higher cutting speeds when cratering wear predominates. |
| Databáze: | OpenAIRE |
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