caa a22 4500 463230469 CHVBK 20180405153240.0 cr unu---uuuuu 170326e20070401xx s 000 0 eng 10.1007/s10853-006-1372-1 doi (NATIONALLICENCE)springer-10.1007/s10853-006-1372-1 Analysis of observations on solid-solution hardening in KBr-KCl single crystals [Elektronische Daten] [Ali Asif, Muhammad Butt] Available data on the temperature and concentration dependences of the critical resolved shear stress (CRSS) of KBr-KCl solid-solution crystals containing 8-41mol% KCl in the temperature range 77-230K have been analysed within the frame work of the kink-pair nucleation model of plastic flow in solid-solution crystals. It is found that CRSS τ decreases with the increase in temperature T in accord with the model relation ln τ=A−BT, where A and B are positive constants. The CRSS τ at a given temperature depends on solute concentration c as τ ∝ c p , where exponent p has a value between 0.5 and 1 depending on the temperature at which deformation is carried out. The model parameter W o, i.e. binding energy between the edge-dislocation segment involved in the unit activation process and the solute atoms close to it (T→0K), which is inversely proportional to B, increases with solute concentration c monotonically in accord with the model prediction W o∝ c 1/4 upto a critical value c m =35mol% KCl. However, W o decreases with increase in c beyond c m , which indicates somewhat ordered distribution of solute in the host lattice of concentrated solid-solutions with c>c m . Springer Science+Business Media, LLC, 2007 Asif Ali Department of Physics, Government College University, 54000, Lahore, Pakistan aut Butt Muhammad Department of Physics, Government College University, 54000, Lahore, Pakistan aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/8(2007-04-01), 2862-2866 0022-2461 42:8<2862 2007 42 10853 https://doi.org/10.1007/s10853-006-1372-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-1372-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Asif Ali Department of Physics, Government College University, 54000, Lahore, Pakistan aut NATIONALLICENCE 700 1- Butt Muhammad Department of Physics, Government College University, 54000, Lahore, Pakistan aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/8(2007-04-01), 2862-2866 0022-2461 42:8<2862 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer