Influence of Strain and Fracturing Conditions

Temperature is the principal factor that, together with time, determines the kinetics of the fracture process. The effect of temperature can be manifested in various ways. Obviously, the described effects vanish upon the solidification of the medium. One can even observe some increase in the strength due to the formation of a solid surface film. 

Physical-Chemical Mechanics of Disperse Systems and Materials 

FIGURE 7.22 Relative strength lowering as a function of temperature (a) and relative plasticity lowering as a function of temperature (b) of carbon steels in the presence of tin. (From Lichtman, V.I. et al., Physical-Chemical Mechanics of Metals, Israel Program for Scientific Translations, Jerusalem, Israel, 1964.) 

FIGURE 7.23 Temperature dependence of plasticity (crystallographic yield stress), (a), and of the strength, K = (b), for zinc single crystals—uncoated and coated with mercury. (From Rehbinder, P.A. and 

Shchukin, E.D., Surface phenomena in solids during deformation and fracture processes, in Progress in Surface Science, S.G. Davison (Ed.), Pergamon Press, Oxford, U.K., 1972, pp. 97-188 Kuchumova, V.M. et al., J. Mater Sci., 27, 5516, 1992.) 

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