Content may be subject to copyright.This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publ... ...This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in [Critical misfit for generation of dislocations at second?phase particles. Journal of Applied Physics 45, 6 p2406-2408 (1974)] and may be found at https://doi.org/10.1063/1.1663606.