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2005 | 107 | 5 | 857-863
Article title

Positron Annihilation in Polycrystalline Metals Deformed by Uniaxial Tension

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EN
Abstracts
EN
Angular distributions of the positron annihilation quanta were measured for polycrystalline samples deformed by uniaxial tension up to different deformation degrees. The S parameter as a function of the W parameter was determined. The data obtained for samples elongated up to different elongation degrees indicate that in the proportionality and limited proportionality regions the changes in the physical properties of samples are governed mainly by generation of vacancies and formation and kinetics of transformations of vacancy clusters occurring first of all on the grains of monocrystallites. In the region of plastic deformations the dominant defects are dislocations and vacancies and their aggregates generated due to the formation and movement of the dislocation of the primary and secondary slip. The positron annihilation data are corroborated by the results of the resistometric and tensometric measurements in the proportionality and limited proportionality regions.
Keywords
EN
Contributors
author
  • Institute of Physics, Opole University, Oleska 48, 45-052 Opole, Poland
author
  • Institute of Physics, Opole University, Oleska 48, 45-052 Opole, Poland
  • Institute of Physics, Opole University, Oleska 48, 45-052 Opole, Poland
  • Institute of Physics, Opole University, Oleska 48, 45-052 Opole, Poland
author
  • Institute of Physics, Opole University, Oleska 48, 45-052 Opole, Poland
References
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  • 3. R. Pietrzak, R. Szatanik, M. Szuszkiewicz, J. Alloys Comp., 282, 130, 1999
  • 4. M. Glowacka, Metallography, Wyd. Politechnika Gdańska, Gdańsk 1996 (in Polish)
  • 5. T. Szymczyk, S. Rabiej, A. Pielesz, J. Desselberger: Mathematical, Physical, Chemical and Astronomical Data, Cykada, Warszawa 2002 (in Polish)
  • 6. W. Rudzińska, J. Pajak, M. Szuszkiewicz, G. Bujnarowski, A.A. Kluza, Phys. Scr., 71, 111, 2005
  • 7. St. Chabik, W. Rudzińska, Cz. Szymański, M. Szuszkiewicz, in: Proc. 33rd Polish Seminar on Positron Annihilation, Turawa (Poland) 2001, Ed. K. Jerie, Institute of Physics, University of Opole, Institute of Experimental Physics, University of Wroclaw, Opole 2001, p. 73
  • 8. W. Triftshauser, Phys. Rev. B, 12, 4634, 1975
  • 9. J. Dryzek, Introduction to the Spectroscopy of Positron Annihilation in Condensed Matter, Jagiellonian University, Kraków 1999 (in Polish)
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv107n523kz
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