The effects of radiation-induced defects (randomly distributed vacancies, voids, and interstitial dislocation loops) on temperature-dependent elastic constants, C 11 , C 12 , and C 44 in BCC iron, are studied with molecular dynamics method. The elastic constants are found to decrease with increasing temperatures for all cases containing different defects. The presence of vacancies, voids, or interstitial loops further decreases the elastic constants. For a given number of point defects, distributed vacancies show the strongest effect compared to voids or interstitial loops. In addition, the elastic constant C = C 44 − (C 11 − C 12)/2 has also been calculated and used to distinguish the effect of a 100 loop from a 1/2 111 loop. All these results can be combined with surface acoustic wave spectroscopy method for further understanding of radiation damage.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.