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Spatially resolved deformation studies on carbon steel employing X‐rays and positron annihilation
Author(s) -
Haaks Matz,
Müller Ingo,
Schoeps Andreas,
Franz Hermann
Publication year - 2006
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200622063
Subject(s) - materials science , positron lifetime spectroscopy , deformation (meteorology) , annihilation , positron , crystallite , plasticity , spectroscopy , positron annihilation spectroscopy , physics , composite material , positron annihilation , nuclear physics , metallurgy , electron , quantum mechanics
Spatially resolved studies on plasticity in a polycrystalline sample of the ferritic carbon steel C45E (AISI 1045) were performed after deformation in a three‐point bending test. The local effects of deformation were investigated by scanning the sample with two different methods: Positron Annihilation Spectroscopy ( S ‐parameter) and Debye–Scherrer diffraction (reflex broadening). A simple relation between the results of both experiments and the true strain over the cross‐section of the bent sample is presented in this letter. Comparing the methods a linear correlation between the lattice distortion of α‐iron and the defect sensitive positron annihilation parameter is found. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)