Results 31 to 40 of about 5,655,416 (266)
Plasticity of crystals and interfaces: From discrete dislocations to size-dependent continuum theory [PDF]
Theoretical and Applied Mechanics, 2010 In this communication, we summarize the current advances in size-dependent continuum plasticity of crystals, specifically, the rate-independent (quasistatic) formulation, on the basis of dislocation mechanics.
Mesarovic Sinisa Đ.
doaj +1 more source
Existence and stability of a screw dislocation under anti-plane deformation [PDF]
, 2014 We formulate a variational model for a geometrically necessary screw dislocation in an anti-plane lattice model at zero temperature. Invariance of the energy functional under lattice symmetries renders the problem non-coercive.
Hudson, Thomas, Ortner, Christoph
core +1 more source
Materials & DesignIn the net-zero era, the burgeoning demands within engineering applications require materials that are not only lighter and stronger but also ductile.
Yi-Hsuan Sun +6 more
doaj +1 more source
Materials Characterization, 2023 The strength of pearlitic wires can be increased by cold-drawing to a world record level for bulk ductile materials of 7 GPa. The underlying strengthening mechanisms are not fully understood, as the application of usual characterization is challenging because of the small grain sizes and the high degree of deformation.
Li, Y., Goto, S., Kostka, A., Herbig, M.
openaire +2 more sources
γʹ and γ″ co-precipitation phenomena in directly aged Alloy 718 with high δ-phase fractions
Materials & DesignCo-precipitation of γ′ and γ′′ is the main strengthening mechanism that provides superior high-temperature strength in directly aged Alloy 718 aerospace parts.
Vitor V. Rielli +6 more
doaj +1 more source
In-situ observation of dislocation dynamics near heterostructured interfaces
Materials Research Letters, 2019 There has been a long-standing controversy on how dislocations interact with interfaces. Here we report in-situ observations that in a Cu–brass heterostructured TEM film Frank–Read sources are the primary dislocation sources. They were dynamically formed
Hao Zhou +10 more
doaj +1 more source
Nanomaterials, 2021 We report on cooperative grain rotation accompanied by a strong Bauschinger effect in nanocrystalline (nc) palladium thin film. A thin film of nc Pd was subjected to cyclic loading–unloading using in situ TEM nanomechanics, and the evolving ...
Ankush Kashiwar +2 more
doaj +1 more source
, 2020 Mechanical testing of micropillars is a field that involves new physics, as the behaviour of materials is non-deterministic at this scale. To better understand their deformation mechanisms we applied 3-dimensional high angular resolution electron ...
Maeder, Xavier +6 more
core +1 more source
Materials & Design, 2021 Relationships between microstructures and hardening nature of laser powder bed fused (L-PBF) 316 L stainless steel have been studied. Using integrated experimental efforts and calculations, the evolution of microstructure entities such as dislocation ...
Luqing Cui +5 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.Reproduction of stacking fault energy calculations from literature with a semi‐automated large language model‐assisted extraction procedure: extraction of simulation protocol, atomistic structures, computational parameters, and reported results, ontology alignment, knowledge graph construction and, finally, recomputation forvalidation.
Sepideh Baghaee Ravari +5 more
wiley +1 more source