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  4. Positron Annihilation Studies of a Pressure Vessel Steel
 
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2000
Conference Paper
Titel

Positron Annihilation Studies of a Pressure Vessel Steel

Abstract
Two different methods of positron annihilation measurements (lifetime spectrum and Doppler broadening) have been applied on different grades of the JRQ-steel. Doppler broadening result show distinct differences in dependence of steel grade where lifetime measurements exhibit only minor differences. Due to the annealing heat treatment the density of lattice defects is reduced in the so called 'aged' specimen compared with the state 'as delivered' even if new martensite is produced by quenching after annealing.
Author(s)
Dobmann, G.
Surkov, A.
Depetasse, S.
Sklarczyk, C.
Hauptwerk
AMES-NDT-Workshop 1999. CD-ROM
Konferenz
AMES-NDT-Workshop 1999
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Language
English
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Fraunhofer-Institut für Zerstörungsfreie Prüfverfahren IZFP
Tags
  • positron annihilation

  • steel

  • defect density

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