Partial dislocations in nanocrystalline metals were introduced and a modified dislocation density formula for partial dislocations was established by x-ray line profile analysis theories. Effects of factors on the determination of partial dislocation density were discussed. From the correlation between the partial and perfect dislocations, partial dislocation density was simply quantitative characterized by drawing on the evaluation methodology of perfect dislocations. Dislocation densities of nanocrystalline nickel calculated from two different equations were compared additionally.

Quantitative Characterization of Partial Dislocations in Nanocrystalline Metals. H.T.Ni, X.Y.Zhang, Y.T.Zhu: Chinese Physics Letters, 2010, 27[5], 056101