Effects of Cutting Parameters on the Residual Stresses of SAE 1045 Steel after Turning

Effects of Cutting Parameters on the Residual Stresses of SAE 1045 Steel after Turning

V.C. Pinto, E.T. de Carvalho Filho, J.T.N. de Medeiros

Abstract. Surface residual stresses on machined parts may be undesirable in some parts, leading to problems over their lifetime. In order to study the effects of cutting parameters on the residual stresses of SAE 1045 steel after turning, tests were performed varying cutting depth, feed rate and cutting speed. For each of these parameters, four different conditions were tested, in order to understand their influence separately from the others. The tests were performed with tungsten carbide coated tool with 80° rhomboid tip morphology. Before being used in the tests, the samples were thermally treated through the normalization process, in order to obtain a regular grain size in each sample and reduction of the residual stresses present in the billet from the manufacturing process. The sin2Ψ method, through the X-ray diffraction technique, was used to quantify the residual stresses. The samples were divided into 4 regions for the evaluation of the residual stresses, where the analyses were performed in the longitudinal and axis direction. The analysis of the residual stress presents greater variation for the depth of cut and feed rate. With the increase of the depth of cut, the tensile residual stresses reduce, presenting compressive values in the axial direction. With the increase of the feed rate, there is increment of the tensile residual stress.

Keywords
Machining Residual Stresses, Cutting Parameter, Turning

Published online 9/11/2018, 6 pages
Copyright © 2018 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: V.C. Pinto, E.T. de Carvalho Filho, J.T.N. de Medeiros, ‘Effects of Cutting Parameters on the Residual Stresses of SAE 1045 Steel after Turning’, Materials Research Proceedings, Vol. 6, pp 151-156, 2018

DOI: http://dx.doi.org/10.21741/9781945291890-24

The article was published as article 24 of the book Residual Stresses 2018

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

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