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Microstructural Investigations of the White and Deformed Layers Close to the Turned Surface of Ti-6Al-4V

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Abstract

In the aircraft industry, along with geometrical and dimensional integrity, the surface integrity of manufactured parts is a necessity. In fact, severe anomalies generated during machining may have a substantial impact on the lifetime of the parts. Nevertheless, these anomalies are not well known in terms of microstructures such as the white layer in titanium alloys. Based on this observation, the present paper deals with microstructural investigations performed on Ti-6Al-4V white and deformed layers generated during turning with a round uncoated carbide insert. The aim of this study is to characterize these anomalies in terms of microstructure and phases. In particular, this study provides a better understanding of metallurgical transformations in the sublayer of machined surfaces through qualitative models.

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Acknowledgments

The authors would like to acknowledge the financial support provided by the European Union for the FP7- AAT- 2007- RTD-1 ACCENT project. Additional thanks go to Snecma Evry-Corbeil for their technical advice and funding for the study.

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Authors and Affiliations

  1. Department of Machining, SNECMA, Rue Henri Auguste Desbruères, BP 81, 91003, Evry Cedex, France

    Mickael Rancic (Machining Process Engineer)

  2. MINES ParisTech, PSL Research University, MAT- Centre des matériaux, CNRS UMR 7633, BP 87, 91003, Evry, France

    Mickael Rancic (Machining Process Engineer), Christophe Colin (Associate Professor) & Mohamed Sennour (Associate Professor)

  3. LaBoMaP, Arts et Metiers ParisTech, Rue porte de Paris, 71250, Cluny, France

    Mickael Rancic (Machining Process Engineer), Jean-Phillipe Costes (Associate Professor) & Gérard Poulachon (Full Professor)

Authors
  1. Mickael Rancic
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  2. Christophe Colin
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  3. Mohamed Sennour
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  4. Jean-Phillipe Costes
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  5. Gérard Poulachon
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Corresponding author

Correspondence to Mickael Rancic.

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Manuscript submitted April 2, 2016.

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Rancic, M., Colin, C., Sennour, M. et al. Microstructural Investigations of the White and Deformed Layers Close to the Turned Surface of Ti-6Al-4V. Metall Mater Trans A 48, 389–402 (2017). https://doi.org/10.1007/s11661-016-3844-5

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  • DOI: https://doi.org/10.1007/s11661-016-3844-5

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