In:
Defect and Diffusion Forum, Trans Tech Publications, Ltd., Vol. 373 ( 2017-3), p. 162-166
Abstract:
Dislocations would be induced after plastic deformation, which might change the mechanical properties of solids. FeCrNi austenitic model alloy and its Mo-diluted alloy were cold rolled with different degree of thickness reduction. Positrons are sensitive to point defects, which are easily trapped and annihilated around the trapping sites. The mean positron lifetimes have been used to estimate the average dislocation concentration in solids. Meanwhile, the trapping efficiency μ was calculated from the lifetime results. The trapping efficiency value is estimated about 3.31×10 -7 cm 3 s -1 for FeCrNi alloy and 3.31×10 -7 cm 3 s -1 for Mo-diluted alloy, respectively. The increment of the hardness value during plastic deformation is related to the increase of the dislocation density and dislocation pile up in solids.
Type of Medium:
Online Resource
ISSN:
1662-9507
DOI:
10.4028/www.scientific.net/DDF.373
DOI:
10.4028/www.scientific.net/DDF.373.162
Language:
Unknown
Publisher:
Trans Tech Publications, Ltd.
Publication Date:
2017
detail.hit.zdb_id:
2051135-8