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Dislocation Structures in Fatigued CuZn Single Crystals
Author(s) -
Lukáš P.,
Klesnil M.
Publication year - 1970
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.19700370234
Subject(s) - slip (aerodynamics) , materials science , lüders band , crystallography , dislocation , transmission electron microscopy , alloy , condensed matter physics , composite material , metallurgy , nanotechnology , chemistry , thermodynamics , physics
Dislocation structures in CuZn alloy single crystals were examined by means of transmission electron microscopy. The overall dislocation structure, typical for the whole volume of fatigued crystals, strongly depends on the degree of difficulty of cross slip. In crystals with sufficiently easy cross slip the surface extrusions and intrusions were found to be related to the persistent slip band structure, differing from that in the remaining volume, while in crystals with very difficult cross slip no persistent slip bands lying under the surface relief were found. Further, the role of the persistent slip bands in fatigue process is discussed.