Nondestructive Characterization of a Deformed Steel Using Positron Annihilation

  • Yong Ki Park
  • Jae Ok Lee
  • Sekyung Lee


Positron annihilation spectroscopy is a relatively new NDE technique for characterizing the atomic scale lattice defects like vacancies and dislocations. Positron annihilation lifetime and Doppler broadening line-shape were measured and analyzed in cold rolled low carbon steel. Both positron lifetime and Doppler broadening line shape reflect the change in the microstructure and the substructure of the specimens sensitively.


Positron Annihilation Thickness Reduction Positron Lifetime Positron Annihilation Lifetime Positron Annihilation Spectroscopy 
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  1. 1.
    J.T. Waber: Positron annihilation-A nondestructive probe for materials science, Conf. Proc. Novel NDE Methods for Materials, B.B. Rath (ed. ), Met Soc. of AIME 1982.Google Scholar
  2. 2.
    Y.K. Park: Determination by positron annihilation and electrolytic hydrogen permeation of the dislocation and hydrogen trap densities in annealed and deformed pure iron single crystals, Ph. D, thesis, 1985, Northwestern University, Ill., U.S.A.Google Scholar
  3. 3.
    Yong-Ki Park, James T. Waber, Michael Meshii, C.L. Snead, Jr., and C.G. Park: Dislocation studies on deformed single crystals of high-purity iron using positron annihilation: Determination of dislocation densities, Phys. 34 B (1986) 823–836.Google Scholar
  4. 4.
    H.H. Jorch and J.L. Campbell: On the analytic fitting of full energy peaks from Ge (Li) and Si (Li) photon detectors, Nucl. Instr. Met. 143 (1977) 551–559.CrossRefGoogle Scholar
  5. 5.
    S. Mantl and W. Triftshäuser: Defect annealing studies on metals by positron annihilation and electrical resistivity measurements, Phys. Rev. 17 (1978) 1645–1652.CrossRefGoogle Scholar
  6. 6.
    A.S. Keh: Dislocation arrangement in alpha iron during deformation and recovery, Direct Observation of Imperfections in Crystals, J.B. Newkirk and J.H. Wernick (eds.), Interscience Publishers, New York (1962).Google Scholar
  7. 7.
    F. Alex, T.D. Hadnagy, K.G. Lynn and J.G. Byrne: Positron annihilation studies of hydrogen embrittlement, Int. Conf. on Effect of Hydrogen of Behavior of Materials, AIME (1975) 642–650.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1989

Authors and Affiliations

  • Yong Ki Park
    • 1
  • Jae Ok Lee
    • 1
  • Sekyung Lee
    • 1
  1. 1.Nondestructive Evaluation LaboratoryKorea Standards Research InstituteTaedok Science TownRepublic of Korea

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