Shear-Type Mechanisms of Deformation Development in Structural Elements of a Deformation Relief

Abstract:

We studied basic structural elements of a deformation relief formed on lateral faces of nickel single crystals under compression. We correlated deformation heterogeneity with the type of structural elements of the relief. It was revealed that deformation heterogeneity did not depend on the type of a relief element or its scale. In addition, some studies were carried out to define ways of the deformation process in slip bands, mesa-and macrobands of deformation as well as in folds. It was found that a slip developed in separate slip bands resulted in their merging into micropackets with a slip occurring concurrently in several parallel planes. It led to the formation of a mesa-or macroscopic element of the deformation relief. We observed both intrusion and extrusion in the material in macrobands of [111]-single crystals as well as the formation of folding areas discussed.

• Periodical: Applied Mechanics and Materials (Volume 788)
• Pages: 211-217
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.788.211
• Online since: August 2015
• Authors: Dmitry V. Lychagin*, Ekaterina A. Alfyorova
• Keywords: Deformation, Deformation Development, Heterogeneity, Relief, Shear, Single Crystal

References

[1] R.W.K. Honeycombe, The Plastic Deformation of Metals. Edward Arnold & American Society of Metals, London, (1984).

[2] J.P. Hirth, J. Lothe, Theory of dislocations, N.Y. –St. Louis– San Francisco–Toronto–London–Sydney, (1970).

[3] D.V. Lychagin, E.A. Alfyorova, V.A. Starenchenk, Effect of crystallogeometric states on the development of macrobands and deformation inhomogeneity in [] nickel single crystals, Physical Mesomechanics. 14 1-2 (2011) 66-78.

DOI: 10.1016/j.physme.2011.04.009

[4] E. Alferova, D. Lychagin, A. Chernyakov, Research of stress field distribution in fcc-single crystal samples in compression, Applied Mechanics and Materials. 682 (2014) 485-490.

DOI: 10.4028/www.scientific.net/amm.682.485

[5] Z.G. Kovalevskaya, V.A. Klimenov , K.V. Zaitsev, Interfacial adhesion between thermal spray coating and substrate achieved by ultrasonic finishing, Applied Mechanics and Materials. 682 (2014) 459-463.

DOI: 10.4028/www.scientific.net/amm.682.459

[6] V.E. Panin, Physical mesomechanics of solid surface layers, Physical Mesomechanics. 2 6 (1999) 5-20.

[7] K. Differt, U. Essmann, H. Mughrabi, Model of extrusions and intrusions in fatigued metal: II. Surface roughening by random irreversible slip, Philosophical Magazine. 54 (1986) 237-258.

DOI: 10.1080/01418618608242897

[8] J. Man, P. Klapetekb, O. Man, A. Weidner, K. Obrtlı´k, J. Pola´k, Extrusions and intrusions in fatigued metals. Part 2. AFM and EBSD study of the early growth of extrusions and intrusions in 316L steel fatigued at room temperature, Philosophical Magazine. 89 16 (2009).

DOI: 10.1080/14786430902917624

[9] D.V. Lychagin, S. Yu. Tarasov, A.V. Chumaevskii, E.A. Alfyorova, Macrosegmentation and strain hardening stages in copper single crystals under compression, International Journal of Plasticity. 69 (2015) 36-53.

DOI: 10.1016/j.ijplas.2015.01.007

[10] K.R. Magida, J.N. Florandob, D.H. Lassilab, M.M. LeBlancb, N. Tamurac, Jr. J.W. Morris, Mapping mesoscale heterogeneity in the plastic deformation of a copper single crystal, Philosophical Magazine. 89 1 (2009) 77-107.

DOI: 10.1080/14786430802558577

[11] J. Man, R. Jbrtlik, J. Polak, Extrusions and intrusions in fatiqued metals. Part 1. State of the art and history, Philosophical Magazine & Philosophical Magazine Letters. 16 89 (2009) 1295-1336.

DOI: 10.1080/14786430902917616