Plastic yielding and deformation bursts in the presence of disorder from coherent precipitates
Henri Salmenjoki,
Arttu Lehtinen,
Lasse Laurson
et al.
Abstract:Alloying metals with other elements is often done to improve the material strength or hardness.A key microscopic mechanism is precipitation hardening, where precipitates impede dislocation motion, but the role of such obstacles in determining the nature of collective dislocation dynamics remains to be understood. Here, three-dimensional discrete dislocation dynamics simulations of FCC single crystals are performed with fully coherent spherical precipitates from zero precipitate density upto ρp = 10 21 m −3 and… Show more
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