M. Suszynska et al., CORRELATED STUDIES OF VICKERS HARDNESS AND THE YIELD STRESS OF NACL-CRYSTALS DOPED WITH NI2+, CA2+ AND EU2+, Materials science & engineering. A, Structural materials: properties, microstructure and processing, 234, 1997, pp. 747-750
The effect of divalent calcium, europium and nickel, in the form of se
cond-phase particles, upon the mechanical characteristics of NaCl crys
tals was studied in some detail. It has been shown that coherent and i
ncoherent precipitates have quite different effect upon the Vickers mi
crohardness and also the macroscopic yield stress. The relationship be
tween both characteristics is linear but different from the Tabor-rela
tion typical of ductile materials. Regardless of the theoretical signi
ficance, this relation could serve as a quick and valuable guide in ma
ny applications. (C) 1997 Elsevier Science S.A.