2002/05/19 by Amit Acharya, Acharya, Amit
Engineering · Materials Science · #FOS: Physical sciences #High Temperature Alloys and Creep #Materials Science (cond-mat.mtrl-sci) #Mechanical stress and fatigue analysis #Metallurgy and Material Forming #Microstructure and mechanical properties
paper · pdf · doi:10.48550/arxiv.cond-mat/0205402
openalex publication_date 2002/05/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
As a guide to constitutive specification, driving forces for dislocation\nvelocity and nucleation rates are derived for a field theory of dislocation\nmechanics. A condition of closure for the theory in the form of a boundary\ncondition for dislocation density is also derived. Kinematical features of\ndislocation evolution like initiation of bowing of a pinned screw segment, and\ninitiation of cross-slip of a screw segment are discussed. An exact solution\nfor the expansion of a polygonal loop as well as representation within the\ntheory of dislocation level Schmid and non-Schmid behavior, and unloaded\nstress-free and steady microstructures are also discussed.\n