Study of tool wear and chemical interaction during machining of Ti6Al4V. (April 2018)

• Record Type: Journal Article
• Authors: Kaplan, B.; Odelros, S.; Kritikos, M.; Bejjani, R.; Norgren, S.
• Is Part Of: International journal of refractory metals & hard materials. Volume 72(2018)
• Page Start: 253
• Page End: 256
• Publication Date: 2018-04
• Subjects: Ti6Al4V -- Turning -- Crater wear -- Tungsten -- X-ray diffraction; Heat resistant alloys -- Periodicals; Refractory materials -- Periodicals; Metallography -- Periodicals; Alliages réfractaires -- Périodiques; Matériaux réfractaires -- Périodiques; Métallographie -- Périodiques; Heat resistant alloys; Metallography; Refractory materials; Periodicals; Electronic journals; 669.73
• DOI: 10.1016/j.ijrmhm.2017.12.012
• Languages: English
• ISSNs: 0263-4368

Abstract

Abstract: The present study concerns an investigation of the wear on three uncoated cemented carbide grades, with differing binder content and grain size, during longitudinal turning of Ti6Al4V as a function of cutting speed. The creater wear at end of tool life is studied in detail using electron microscopy and X-ray diffraction. It is observed that decreasing binder content results in slower wear progression and longer tool life. The microstructure of the adhered layer is also dependent on the binder content, where a lower amount of binder results in an increase of dark precipitates in the adhered layer. X-ray diffraction confirms the presence of bcc-W as a chemical wear product at the interface. Diffraction peaks corresponding to cubic (Ti, V)C are also occasionally observed. Highlights: The wear process when machining Ti6Al4V with uncoated cemented carbide has been studied in detail. Wear products are characterized by SEM-EDS and XRD. Both bcc-W and cubic (Ti, V)C are observed at the interface between the adhered workpiece material and cemented carbide.