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The Dislocation Mechanics of Crystal/Polycrystal Plasticity
- Publication Year :
- 2022
-
Abstract
- A brief history and update are given in four examples demonstrating that polycrystals are generally stronger than their individual component crystal grains because of obstructed dislocation pile-ups at grain boundaries. The example cases constitute diverse applications of a Hall–Petch dependence involving one or another aspects of the full polycrystal stress–strain behavior: (1) a Hall–Petch based description for a compilation of delayed yielding measurements compiled for steel; (2) computations for an H-P grain size dependent, tensile, plastic instability behavior of copper; (3) an H-P relationship for the true maximum stress for the limit of uniform straining of aluminum; and (4) the onset of a ductile-to-brittle transition in steel cleavage fracturing measurements that are connected to the material fracture toughness properties.
Details
- Database :
- OAIster
- Notes :
- Armstrong, Ronald W.
- Publication Type :
- Electronic Resource
- Accession number :
- edsoai.on1410386723
- Document Type :
- Electronic Resource