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fracture involves cases in which microvoid coalescence occurs in grain boundaries as a result of creep cavitation or void nucleation at grain boundary precipitates. Such fracture is characterized by dimples at the surface. Dimpled intergranular fracture typically leads to low macroscopic ductility, with dimpled topology revealed at the grain facets when observed at higher magnifications (1000 to 5000x). Impurities that adsorb at the grain boundaries promote dimpled intergranular fracture.
*Intergranular

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