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Influence of milling on surface integrity of Ti-6Al-4V

Abstract : The present article addresses the influence of milling on the surface integrity of Ti-6Al-4V. Observation of the machined surface from a macroscopic perspective (naked eye) has highlighted an orange peel phenomenon. Under the machined surface no plastically deformed layer or lengthening of the grains were observed. As far as microhardness is concerned, a slightly softened zone was noted under the machined surface. Diffusion of vanadium from phase β to phase α also occurred but without resulting change to the microstructure. Measurement of microhardness and residual stresses showed that the finishing pass predominated over the roughing pass in terms of its influence on surface integrity. The response surface methodology was used in order to highlight those parameters influencing surface integrity. Its application and processing showed that the most influential factor is the nose radius for roughness and the cutting speed for residual stresses.
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Submitted on : Thursday, July 11, 2019 - 2:00:52 PM
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Kamel Moussaoui, Michel Mousseigne, Johanna Senatore, Pierre Lagarrigue, Yves Caumel. Influence of milling on surface integrity of Ti-6Al-4V. Advanced Materials Research, Trans Tech Publications, 2013, 698, pp.127--137. ⟨10.4028/⟩. ⟨hal-02180345⟩



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