Abstract
The paper presents the results of processing experimental data on creep-rupture strength of >110 111<-oriented single crystals of ZhS36 and CMSX-4 nickel-base superalloys in the temperature range from 1023 to 1373 K. We give numerical values of the coefficients in equations of the time-temperature dependence of creep-rupture life and plot the creep-rupture strength curves for single crystals of the same orientation in the creep-rupture life range up to 105 h. We have revealed three various time-temperature regions of variation of the creep-rupture strength anisotropy factor, where the mode of anisotropy is governed by various creep mechanisms and depends on the microstructure evolution of single crystals.
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