Engineering Transactions, 57, 2, pp. 113–123, 2009
10.24423/engtrans.178.2009

Variation of mechanical parameters of engineering materials under tension due to cyclic deformation by torsion

Z. L. KOWALEWSKI
Institute of Fundamental Technological Research Polish Academy of Sciences, Warszawa; Motor Transport Institute, Warszawa
Poland

T. SZYMCZAK
Motor Transport Institute, Warszawa; Białystok Technical University, Faculty of Mechanical Engineering, Białystok
Poland

The paper presents experimental results of investigations carried out under complex stress state on the 2024 aluminium alloy (used by aircraft industry) and P91 steel (used at power plants). Second-order effects associated with cyclic loadings enforced by the trapezoidal signals in the two mutually perpendicular directions are identified. It is shown, how the cyclic loading and its parameters (strain amplitude and frequency) influence the simultaneous monotonic loading in the direction perpendicular with respect to the cyclic one. Moreover, the paper presents an analysis of the selected mechanical properties variations on the basis of an initial yield locus evolution.
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Copyright © Polish Academy of Sciences & Institute of Fundamental Technological Research (IPPT PAN).

References

A. Abdul–Latif, M. Chadli, Modelling of the heteregenous damage evolution at the granular scale in polycrystals under complex cyclic loadings, Int. J. Damage Mech., 16, 133–158, 2007.

A. Benallal, D. Marquis, An experimental investigation of cyclic hardening of 316 stainless steel under complex multiaxial loadings, Trans. 9th SMIRT, 385–393, 1987.

W. Bochniak, A. Korbel, KOBO Type Forming: forging of metals under complex conditions of the process, J. Mat. Proc. Tech., 134, 1, 120–134, 2003.

W. Bochniak, A. Korbel, R. Szyndler, R. Hanarz, F. Stalony–Dobrzański, L. Błaż, P. Snarski, New forging method of bevel gears from structural steel, J. Mater. Proc. Tech., 173, 75–83, 2006.

W. Bochniak, A. Korbel, R. Szyndler, Innovative solutions for metal forming, Proc. Inter. Conf. MEFORM 2001 – Herstellung von Rohren und Profilen, Institut für Metallformung Tagungsband, 239, Freiberg/Riesa, 2001.

W. P. Jia, J. V. Fernandes, Mechanical behaviour and the evolution of the dislocation structure of copper polycrystal deformed under fatigue-tension and tension-fatigue sequential strain paths, Mater. Sci. Eng., A348, 133–144, 2003.

Jixi Zhang, Yanyao Jiang, An experimental study of the formation of typical dislocation patterns in polycrystalline copper under cyclic shear, Acta Materialia, 55, 1831–1842, 2007.

L. X. Kong, P. D. Hodgson, Constitutive modelling of extrusion of lead with cyclic torsion, Mater. Sci. Eng., A 276, 32–38, 2000.

Z. L. Kowalewski, T. Szymczak, Effects observed in engineering materials subjected to monotonic and cyclic loading due to tension-torsion combinations, PLASTICITY ’09, 15th International Symposium on Plasticity & Its Current applications, St. Thomas, Virgin Islands, USA, Jan. 3–8 2009, 196–198, 2009.

Z. L. Kowalewski, T. Szymczak, A role of cyclic loading at modification of simple deformation processes of metallic materials, The 5th International Symposium on Failure Mechanics of Materials and Structures, Augustów, 3–6 June 2009, Poland, 59–60, 2009.

Z. L. Kowalewski, T. Szymczak, Effect of cyclic loading due to torsion on the monotonic tension parameters of engineering materials, International Symposium on Plasticity 2007 and its current applications: PLASTICITY’07: 13th International Symposium, Girwood, Alaska, June 2–6, 2007, USA, 181–183, 2007.

A. Kumar, S. K. Samanta, K. Mallick, Study of the effect of deformation on the axes of anisotropy, J. Eng. Mat. Tech., 113, 187–191, 1991.

R. Mnif, M. Kchaou, R. Elleuch, F. Halouani, Cyclic behavior and damage analysis of brass under cyclic torsional loading, J. Fail. Anal. and Preven., 450–455, 2007.




DOI: 10.24423/engtrans.178.2009