= Egon Orowan
{c}
<Egon Orowan> developed the <dislocation> account of <plastic deformation> in <crystals>. Motion of a <dislocation> permits successive local rearrangements instead of simultaneous sliding of an entire atomic plane, helping explain why measured strengths can be much lower than ideal-crystal estimates. The National Academy memoir traces his 1934 contribution and later work on deformation and failure.https://www.nasonline.org/wp-content/uploads/2024/06/orowan-egon.pdf[biographical memoir, early dislocation work]{ref}
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