The Formation and Growth of Cavities in Creep

摘要: AbstractGrain-boundary dislocations may play a crucial role in creep fracture.Despite initial successes, the existing diffusion theory regarding formation and growth of cavities is now encountering serious difficulties its attempt to deal with rates these processes. For instance, measured have been found agree those calculated from case pure metal; strong alloy rate would not alter much, since coefficients are changed substantially by alloying, but actual greatly reduced something like same ratio as rate. Theory experiment then far apart. Another instance that an early calculation which competition between opening cavity grain-boundary sliding closure sintering was considered, it concluded latter did predominate over former, correction error reverses this conclusion....