The climb of<i>a</i>/2〈110〉 dislocations associated with discontinuous precipitation in a copper-silver alloy

Abstract

Abstract On examining the discontinuous precipitation associated with the climb of the unit dislocation a/2〈110〉 in a precipitation-annealed copper–silver alloy it was shown that unit dislocations affected by a chemical force climb predominantly on distinct crystallographic planes of the types {110} and {111}, the most favoured being that {110} plane which is perpendicular to the Burgers vector of the climbing dislocation. The vacancy-emitting climb in question is not strictly bound to the planes of easy climb, however, but proceeds locally on non-crystallographic planes also.