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Open AccessArticle

Metallurgical Analysis of Chip Forming Process when Machining High Strength Bainitic Steels

1
Laboratoire d’Etudes des Microstructures et de Mécanique des Matériaux, Ecole Nationale Supérieure d’Arts et Métiers Campus de Metz, Metz Technopôle, 4 rue Augustin Fresnel, 57078 Metz, France
2
ArcelorMittal Global R&D, Centre R&D Bars & Wires, Voie Romaine, BP 30320, 57283 Metz, France
*
Author to whom correspondence should be addressed.
J. Manuf. Mater. Process. 2019, 3(1), 10; https://doi.org/10.3390/jmmp3010010
Received: 18 December 2018 / Revised: 16 January 2019 / Accepted: 17 January 2019 / Published: 19 January 2019
(This article belongs to the Special Issue New Findings and Approaches in Machining Processes)
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Abstract

In the following work, we propose a metallurgical approach to the chip formation process. We focus on a turning application of high strength steel in which chips are produced by adiabatic shear bands that generate cutting force signals with high frequency components. A spectral analysis of these signals is applied and highlights peaks above 4 kHz depending on the cutting conditions. A microscopic analysis on the chip sections provided data on chip breaking and serration mechanisms. Shear band spacing and excitation frequency of the whole cutting system were calculated and gave a good correlation with cutting forces spectra. View Full-Text
Keywords: turning; machinability; bainitic steel; chip formation mechanism turning; machinability; bainitic steel; chip formation mechanism
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Haddad, F.; Lescalier, C.; Desaigues, J.-E.; Bomont-Arzur, A.; Bomont, O. Metallurgical Analysis of Chip Forming Process when Machining High Strength Bainitic Steels. J. Manuf. Mater. Process. 2019, 3, 10.

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