Residual Stresses Generated by the Combined Burnishing - Cutting Process in the Worked Parts

Abstract:

The cutting followed by burnishing, used like a combined process, leads to the improvement of the part surface quality (roughness, hardness, microstructure etc.) and to reduction of the costs and manufacturing times as a function of different working parameters. One of the factors and parameters that characterize the machined surface by this combined process is the residual stresses that are generated and located in the part deformed strata. The present paper analyses the results concerning the experimental determination of the residual stresses generated in the machined surfaces of parts made from magnesium alloy by the burnishing - turning combined process. The experimental investigations have shown that in the machined strata the combined process determines the occurrence of the compressive residual stresses and hence the fatigue and cracking resistances of the machined materials will be improved.

• Periodical: Applied Mechanics and Materials (Volume 657)
• Pages: 103-107
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.657.103
• Online since: October 2014
• Authors: Gheorghe Brabie*, Gheorghe Mustea, Bogdan Chirita
• Keywords: Burnishing - Turning Combined Process, Magnesium Alloy, Residual Stress

References

[1] D.A. Axinte, N. Gindy, Turning assisted with deep cold rolling—a cost efficient hybrid process for workpiece surface quality enhancement, P. I. Mech. Eng. B-J. Eng. 218 (2004) 807-811.

DOI: 10.1177/095440540421800713

[2] U.M. Shirsat, B.B. Ahuj, Parametric analysis of combined turning and ball burnishing process, Indian J. Eng. Mater. S., 11 (2004) 391-396.

[3] G. Brabie, a. o., Residual stresses generated by the processes of transformation of the metallic materials, Junimea, Iasi, (1995).

[4] D. Umbrello, An ANN approach for predicting subsurface residual stresses and the desired cutting conditions during hard turning, J. Mater. Process. Tech. 189 (2007) 143-152.

DOI: 10.1016/j.jmatprotec.2007.01.016

[5] O. Cadran, M. Al-Tal, The effect of shot penning and polishing on the pitting corrosion resistance of stainless steel, Proc. First Jordanian Int. Conf. Mat. Sci. Eng., Al-Balqa Applied University, Al-Salt, pp.138-50 (2005).

[6] P.J. Withers, Residual Stress. Part 1 - Measurement technique, Mater. Sci. Technol. 17 (2000) 355-365.

[7] G. Mustea, Theoretical and experimental contributions concerning the combined forming – cutting machining, PhD thesis, Univ. of Bacau, (2014).