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    This article has been cited by the following publications. This list is generated based on data provided by CrossRef.

    Molnárová, O. Dobroň, P. and Chmelík, F. 2015. Acoustic Emission Study of Plastic Instabilities in AlSi1MgMn. Acta Physica Polonica A, Vol. 128, Issue. 4, p. 801.


    Chinh, Nguyen Q. and Szommer, Péter 2014. Mathematical description of indentation creep and its application for the determination of strain rate sensitivity. Materials Science and Engineering: A, Vol. 611, p. 333.


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Possible self-organized criticality in the Portevin–Le Chatelier effect during decomposition of solid solution alloys

  • Nguyen Q. Chinh (a1), Tivadar Győri (a1), Jenő Gubicza (a1), János Lendvai (a1) and Terence G. Langdon (a2)
  • DOI: http://dx.doi.org/10.1557/mrc.2011.25
  • Published online: 29 December 2011
Abstract
Abstract

Spatial fluctuations of the microstructure suggest possible self-organized criticality in the Portevin–Le Chatelier plastic instability occurring in age-hardenable alloys. The discontinuous yielding found in a supersaturated Al alloy can be characterized by a universal power-law spectrum that is independent of the experimental conditions. The result provides an explanation for the formation of unexpected detrimental strain localizations when samples are severely deformed, giving a framework for studying the simultaneous effects of solute atoms and precipitates in the decomposition of solid solutions.

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Corresponding author
Address all correspondence to Nguyen Q. Chinh at chinh@metal.elte.hu
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4.F. Chmelík , A. Ziegenbein , H. Neuhäuser , and P. Lukac : Investigating the Portevin-Le Chatelier effect by the acoustic emission and laser extensometry techniques. Mater. Sci. Eng., A 324, 200 (2002).

5.M. Lebyodkin , Y. Brechet , Y. Estrin , and L.P. Kubin : Statistics of the catastrophic slip events in the Portevin-Le Chatelier effect. Phys. Rev. Lett. 74, 4758 (1995).

6.A.H. Cottrell : A note on the Portevin-Le Chatelier effect. Philos. Mag. 44, 829 (1953).

8.G. Sha and A. Cerezo : Kinetic Monte Carlo simulation of clustering in an Al-Zn-Mg-Cu alloy (7050). Acta Mater. 53, 907 (2005).

9.N.Q. Chinh , J. Gubicza , T. Czeppe , J. Lendvai , C. Xu , R.Z. Valiev , and T.G. Langdon : Developing a strategy for the processing of age-hardenable alloys by ECAP at room temperature. Mater. Sci. Eng., A 516, 248 (2009).

10.R.Z. Valiev and T.G. Langdon : Principles of equal-channel angular pressing as a processing tool for grain refinement. Prog. Mater. Sci. 51, 881 (2006).

11.Y. Fukuda , K. Oh-ishi , M. Furukawa , Z. Horita , and T.G. Langdon : Influence of crystal orientation on ECAP of aluminum single crystals. Mater. Sci. Eng., A 420, 79 (2006).

13.B. Bak : How Nature Works: The Science of Self-organized Criticality (Copernicus, Springer-Verlag, New York, 1996).

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MRS Communications
  • ISSN: 2159-6859
  • EISSN: 2159-6867
  • URL: /core/journals/mrs-communications
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