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Machining of Titanium Alloys pp 79–111Cite as

Analysis of Physical Cutting Mechanisms and Their Effects on the Tool Wear and Chip Formation Process When Machining Aeronautical Titanium Alloys: Ti-6Al-4V and Ti-55531

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Part of the book series: Materials Forming, Machining and Tribology ((MFMT))

Abstract

The current research deals with the analysis of physical cutting mechanisms involved during the machining process of titanium alloys: Ti-6Al-4V and Ti-55531. The objective is to understand the effect of all cutting parameters on the tool wear behavior and stability of the cutting process. The investigations have been focused on the mechanisms of chip formation and their interaction with tool wear. At the microstructure scale, the analysis confirms the intense deformation of the machined surface and shows a texture modification. As the cutting speed increases, cutting forces and temperature show different progressions depending on the considered microstructure Ti-6Al-4V or Ti-55531 alloy. Results show for both materials that the wear process is facilitated by the high cutting temperature and the generation of high stresses. The analysis at the chip-tool interface of friction and contact nature (sliding or sticking contact) shows that the machining Ti-55531 often exhibits an abrasion wear process on the tool surface, while the adhesion and diffusion modes followed by coating delamination process are the main wear modes when machining the usual Ti-6Al-4V alloy. Moreover, the proposed study describe the real effect on machining of the tool geometry, coating and lubrication. Finally, the investigations allow to identify some ways to improve the machinability of these alloys, particularly the Ti-55531 alloy.

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Authors and Affiliations

  1. Laboratoire D’Énergétique et de Mécanique Théorique et Appliquée, LEMTA CNRS-UMR 7563, GIP-InSIC, 27 Rue D’Hellieule, 88100, St-Dié-Des-Vosges, France

    Mohammed Nouari

  2. University of Lorraine/Mines Nancy, Mines Nancy, France

    Mohammed Nouari

  3. Laboratoire D’Énergétique et de Mécanique Théorique et Appliquée, LEMTA CNRS-UMR 7563, GIP-InSIC/Mines D’Albi, 27 Rue D’Hellieule, 88100, St-Dié-Des-Vosges, France

    Hamid Makich

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  1. Mohammed Nouari
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  2. Hamid Makich
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Correspondence to Mohammed Nouari .

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Editors and Affiliations

  1. Department of Mechanical Engineering, University of Aveiro, Aveiro, Portugal

    J. Paulo Davim

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Nouari, M., Makich, H. (2014). Analysis of Physical Cutting Mechanisms and Their Effects on the Tool Wear and Chip Formation Process When Machining Aeronautical Titanium Alloys: Ti-6Al-4V and Ti-55531. In: Davim, J. (eds) Machining of Titanium Alloys. Materials Forming, Machining and Tribology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-43902-9_4

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  • DOI: https://doi.org/10.1007/978-3-662-43902-9_4

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-662-43901-2

  • Online ISBN: 978-3-662-43902-9

  • eBook Packages: EngineeringEngineering (R0)

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