Dislocation bias factors in fcc copper derived from atomistic calculations

作者：Chang Zhongwen^*; Olsson Par; Terentyev Dmitry; Sandberg Nils

来源：Journal of Nuclear Materials, 2013, 441(1-3): 357-363.

DOI：10.1016/j.jnucmat.2013.06.029

Atomistic calculations were employed in order to calculate the interaction energy of an edge dislocation with different point defects. The bias factor was calculated by applying a finite element method on the interaction energy landscapes obtained from the atomistic calculations. A comparison of the calculated bias factor with a model based on elasticity theory reveals around 30% discrepancy under conditions representative for electron irradiation at 600 degrees C. Possible reasons are discussed. The bias factor dependence on dislocation density and ambient temperature is presented and discussed.

• 出版日期2013-10