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Correlation between different parameters of plastic deformation in doped NaCl crystals
Author(s) -
Boyarskaya Yu. S.,
Zhitaru R. P.,
Linte M. A.
Publication year - 1984
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170190118
Subject(s) - indentation hardness , impurity , materials science , dislocation , hardening (computing) , anomaly (physics) , doping , analytical chemistry (journal) , crystallography , mineralogy , condensed matter physics , composite material , chemistry , microstructure , chromatography , physics , optoelectronics , organic chemistry , layer (electronics)
The yield stress (τ y ), the microhardness ( H ) and the dislocation mobility in the stress field of a concentrated load (γ) were measured in NaCl: Ca and NaCl: Pb single crystals within the temperature interval 77–673 K. It was shown that there was a good correlation between the concentration changes of τ y , H and γ for NaCl:Ca crystals. Such clear results were absent for NaCl:Pb single crystals. An anomaly of τ y at 77 K was revealed for these crystals; it was not followed by the H anomaly. In conclusion it was stated that the impurity hardening was connected with the increasing of dislocation mobility but such a parameter did not determine the temperature hardening.