Abstract
One possibility of evaluating the primary creep behaviour of the alloy CoCr22Ni22W14 is presented using the microstructural data obtained from TEM experiments. Due to the complex precipitation behaviour of the alloy at 1123 K it is necessary to investigate the evolution of the mean free path of the dislocations caused by forest dislocations and precipitations. Measured and modelled dislocation densities and the simulated creep curves are presented for creep under constant loading at 1123 K. The model used has no requirement for a weighting factor of strengthening caused by particles or dislocations and differs from Kocks and Mecking's approach using microstructural data from TEM.
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