Understanding the role of grain boundaries has been impeded by continued adoption of power law equations for identification of the processes governing creep and creep fracture of metals and alloys. In contrast, the dominant mechanisms can be clarified through new relationships which involve normalisation of the applied stress by the yield and ultimate tensile strengths determined from high strain rate tests at the creep temperatures.
B. Wilshire and M. T. Whittaker
Materials Science and Technology, 2010 Vol. 26 No. 7 pp793-796 doi: 10.1179/026708309X12567268926605