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Defect study on deformed Fe–Si alloys by positron annihilation techniques
Author(s) -
Agundez M.,
Ruiz D.,
Petegem S. Van,
De Baerdemaeker J.,
Chou K. W.,
Segers D.,
Houbaert Y.
Publication year - 2005
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.200420051
Subject(s) - positron annihilation , doppler broadening , dislocation , positron , materials science , annihilation , trapping , annealing (glass) , deformation (meteorology) , range (aeronautics) , crystallography , carbon fibers , coincidence , condensed matter physics , atomic physics , metallurgy , nuclear physics , chemistry , physics , composite material , electron , spectral line , ecology , astronomy , biology , medicine , alternative medicine , pathology , composite number
Positron annihilation lifetime and coincidence Doppler broadening measurements have been performed on ultra low carbon steel and Fe–Si alloys with different Si contents (from 3.32 up to 11.1 wt%) in the annealed state and after a deformation of 5% thickness reduction. It was seen that above 5.6 wt% Si the nature of the defects trapping the positron changes. This coincides with the concentration for the onset of long range D0 3 ordering in the Fe–Si alloys changing the nature of the dislocation structure. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)