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Billenius, Annethe
Publications (4 of 4) Show all publications
Peng, R., Zhou, J. M., Johansson, S., Billenius, A., Bushlya, V. & Stahl, J.-E. (2014). Influence of Dry Cut and Tool Wear on Residual Stresses in High Speed Machining of Nickel-Based Superalloy. In: : . Paper presented at ICF13, Beijing 17-21 Juni 2013 (pp. 470-477). Trans Tech Publications Inc., 768-769
Open this publication in new window or tab >>Influence of Dry Cut and Tool Wear on Residual Stresses in High Speed Machining of Nickel-Based Superalloy
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2014 (English)Conference paper, Published paper (Refereed)
Abstract [en]

Machining induced residual stresses were investigated in Inconel 718 prepared by high speed turning under dry cut condition. The influence of cutting tool wear and the use of cutting fluid were studied. By x-ray diffraction measurements, characteristic residual stress distributions with tensile stresses in the top layer and compressive stresses in the layer below were found in all the investigated samples. The magnitude of surface tensile stresses and size of the tension as well as compression zones varied depending on the cutting condition. The application of cutting fluid for turning using new tool has a minor effect, giving a somewhat larger subsurface compressive zone but reducing the surface tensile stresses. Tool flank wear has shown a much stronger effect. While a flank wear of VBmax=0.15 mm enhanced mostly the surface tensile residual stresses, a severer wear of VBmax=0.3 mm greatly increased the thickness of the subsurface compression zone and at the same time resulted in strong stress anisotropy. Microstructural study by electron channelling contrast imaging shows that the observed influence of tool flank wear or cutting fluid on residual stresses are related to different contributions from increased plastic deformation and cutting heat, which changed with the cutting conditions.

Place, publisher, year, edition, pages
Trans Tech Publications Inc., 2014
Keywords
residual stresses, Inconel 718, high speed turning, dry cut, tool wear
National Category
Engineering and Technology Materials Engineering
Identifiers
urn:nbn:se:liu:diva-89583 (URN)10.4028/www.scientific.net/MSF.768-769.470 (DOI)000336693000062 ()
Conference
ICF13, Beijing 17-21 Juni 2013
Available from: 2013-02-27 Created: 2013-02-27 Last updated: 2014-12-10
Peng, R., Moverare, J., Avdovic, P., Billenius, A. & Chen, Z. (2014). Influence of Vibration and Heat Treatment on Residual Stress of a Machined 12%Cr-Steeel. In: : . Paper presented at 9th European Conference on Residual Stresses ECRS-9, Troyes, France, 7-10 July 2014 (pp. 1-7). Trans Tech Publications Inc.
Open this publication in new window or tab >>Influence of Vibration and Heat Treatment on Residual Stress of a Machined 12%Cr-Steeel
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2014 (English)Conference paper, Published paper (Refereed)
Abstract [en]

In this paper we investigated the influence of vibratory stress relieving technique, which is widely used for stress relaxation of weld and casting components/structure, on machining residual stresses in a ring-component of 12% Cr-steel. It was shown that the employed vibratory treatment, without significantly altering the microstructure, turned the surface layer from tension into compression but retained the compressive residual stresses in the subsurface. In comparison, a stress relieving heat treatment, included as a reference in the study, removed completely the surface tensile residual stresses and reduced the subsurface compressive residual stresses to a low level. Significant microstructural changes in the form of recrystallization also occurred in a thin surface layer of the machining affected zone after the heat treatment.

Place, publisher, year, edition, pages
Trans Tech Publications Inc., 2014
Series
Advanced Materials Research, ISSN 1022-6680 ; 996
Keywords
vibration stress relief, thermal stress releif, machining, residual stress, 12% Cr-steel
National Category
Materials Engineering
Identifiers
urn:nbn:se:liu:diva-108775 (URN)10.4028/www.scientific.net/AMR.996.609 (DOI)000348282100099 ()
Conference
9th European Conference on Residual Stresses ECRS-9, Troyes, France, 7-10 July 2014
Available from: 2014-07-04 Created: 2014-07-04 Last updated: 2015-02-20
Peng, R., Zhou, J., Johansson, S., Billenius, A., Bushlya, V. & Stahl, J.-E. (2014). Residual Stresses in High Speed Turning of Nickel-Based Superalloy. HTM Journal of Heat Treatment and Materials, 69(1), 46-53
Open this publication in new window or tab >>Residual Stresses in High Speed Turning of Nickel-Based Superalloy
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2014 (English)In: HTM Journal of Heat Treatment and Materials, ISSN 1867-2493, Vol. 69, no 1, p. 46-53Article in journal (Refereed) Published
Abstract [en]

Residual stresses induced by machining operations can be critical for the performance and lifetime of the machined components. This paper investigated the influence of cutting conditions, including the use of cutting fluid, cutting speed and tool flank wear, on the residual stresses in high speed turning of Inconel 718 alloy. X-ray diffraction measurements revealed characteristic residual stress distributions with tensile stresses in a thin surface layer and compressive stresses in a much thicker subsurface layer in all investigated samples. However, the magnitude of the surface tensile stresses and subsurface compressive stresses as well as the size of the tension and compression zone depended on the cutting parameters. Surface tensile residual stresses over 1600 MPa and 1400 MPa were induced by tool flank wear and increased cutting speed, respectively, in dry turning. The effect of cutting induced local plasticity and temperature increase on the observed residual stress distributions was analyzed based on microstructural study by electron channeling contrast imaging and electron backscatter diffraction

Place, publisher, year, edition, pages
Carl Hanser Verlag GmbH, 2014
Keywords
Residual stresses, Inconel 718, high speed turning, dry cut, tool wear
National Category
Engineering and Technology Materials Engineering
Identifiers
urn:nbn:se:liu:diva-105159 (URN)10.3139/105.110211 (DOI)2-s2.0-84896525186 (Scopus ID)
Note

Enhanced contribution based upon a presentation at the International Conference on Residual Stresses ICRS9, October 7–9, 2012, in Garmisch-Partenkirchen, GermanyRead

Available from: 2014-03-10 Created: 2014-03-10 Last updated: 2016-09-07Bibliographically approved
Peng, R., Zhou, J., Johansson, S., Billenius, A., Bushlya, V. & Stahl, J.-E. (2013). Surface Integrity and the Influence of Tool Wear in High Speed Machining of Inconel 718. In: : . Paper presented at 13th International Conference on Fracture ICF13, June 16-21, Beijing, China. (pp. 1-10).
Open this publication in new window or tab >>Surface Integrity and the Influence of Tool Wear in High Speed Machining of Inconel 718
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2013 (English)Conference paper, Published paper (Refereed)
Keywords
high speed machining, surface integrity, residual stress, tool wear, Inconel 718
National Category
Engineering and Technology Materials Engineering
Identifiers
urn:nbn:se:liu:diva-95487 (URN)
Conference
13th International Conference on Fracture ICF13, June 16-21, Beijing, China.
Available from: 2013-07-05 Created: 2013-07-05 Last updated: 2013-07-05
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