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Analysis of the Portevin - Le Chatelier effect in tin bronzes at elevated temperatures

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Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Purpose: The aim of the present paper is the determination of the effect of the chemical composition and temperature of deformation of standardized tin bronzes and bronze modified with zirconium on the Portevin-Le Chatelier (PLC) phenomenon, mainly basing on the shape of stress-strain curves within the temperature range of 100-300° C and observations of their structure. The reasons of the occurrence of such en effect are so far no fully known and explained and the opinions concerning is physical basis vary. Design/methodology/approach: Of essential design in this research is determination of the dependence of PLC effect on the chemical composition, temperature and strain rate and the preliminary heat treatment and grain size. The main method used in this investigation is tensile test at elevated temperature. Findings: The main conclusions are following: the PLC effect on tin bronzes with a micro-addition of zirconium in an amount of 0.01-0.05% depends the temperature of deformation in the tensile test in the range of 100-300° C and the chemical composition of the alloys; the type of serration revealed on the σ-ε curve depend mainly on the temperature of deformation and can be differ during the respective stages of the analyzed curves. Practical implications: In this paper implications for practice are not taken into consideration. Originality/value: In this paper an additive type of serration observed on the curves σ -ε , denoted by the symbol D, is new.
Rocznik
Strony
281--289
Opis fizyczny
Bibliogr. 15 poz., wykr.
Twórcy
autor
  • Division of Constructional and Special Materials, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland, wojciech.ozgowicz@polsl.pl
Bibliografia
  • [1] J. Balik, The onset Portevin-Le Chatelier instabilities in tensile testing, Materials Science and Engineering A316 (2001) 102-108.
  • [2] M. S. Bharathi, S. Rajesh, G. Ananthakrishna, A dynamical model for the Portevin-Le Chatelier bands, Scripta Materialia 48 (2003) 1355-1360.
  • [3] X. M. Cheng, J. G. Morris, The anisotropy of the Portevin-Le Chatelier effect in aluminum alloys, Scripta Materialia 43 (2000) 651-658.
  • [4] K. Chihab, K. Bouabdalah, Influence of the structural anisotropy on the nonuniform plasticity of the PLC effect, Annales de Chimie Science des Materiaux 3 (2000) 171-178.
  • [5] P. Hähner, On the critical conditions of the Portevin-Le Chatelier effect, Acta Materiala 9 (1997) 3695-3706.
  • [6] Z. Jiang, Spatial characteristics of the Portevin-Le Chatelier deformation bands in Al-4 at %Cu polycrystals, Materials Science and Engineering 21 (2005) 154-164.
  • [7] J. Kang, Effect of type-B Portevin-Le Chatelier bands in uniaxial tension of strip cast AA5754 sheets, Scripta Materialia 53 (2005) 499-503.
  • [8] F. B. Klose, A. Ziegenbein, F. Hagemann, H. Neuhäuser, P. Hähner, M. Abbadi, A. Zeghloul, Analysis of Portevin-Le Chatelier serration of type B in Al-Mg, Materials Science and Engineering A369 (2004) 76-81.
  • [9] F. B. Klose, A. Ziegenbein, J. Weidenmüller, H. Neuhäuser, P. Hähner, Portevin-Le Chatelier effect in strain and stress controlled tensile tests, Computational Materials Science 26 (2003) 80-86.
  • [10] A. Korbel, The analyses of the non-uniform deformation in the substitutional solid solutions, Metallurgy and Foundry Practice Bulletin 474 (1974) 9-70.
  • [11] Z. Kovàcs, Portevin-Le Chatelier plastic instabilities, PhD Thesis-Unpublished, Main Library of Eötcös Loránd Univeritet, Budapest, 2002.
  • [12] P. G. McCormick, C. P. Ling, Numerical modelling of the Portevin-Le Chatelier effect, Acta Metallurgica et Materialia 43 (1995) 1969-1977.
  • [13] J. Mizera, K. Kurzydłowski, On the anisotropy of the Portevin-Le Chatelier plastic instabilities in Al-Li-Cu-Zr alloy, Scripta Materialia 45 (2001) 801-806.
  • [14] A. Portevin, F. Le Chatelier, Sur un phenomene observe lors de l'essai de traction d'alliages en cours de transformation Comptes Rendus de l'Acad. Sci. Paris, Comptes Rendus de l'Acad. Sci. Paris' 176 (1932) 507-510.
  • [15] J. Wyrzykowski, The influence of grain boundary feature on the boundary effect, Research works, Mechanics 105 (1987) 4-102.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BWAW-0002-0017
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