Results 41 to 50 of about 15,379 (289)
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
Microstructural Comparison of the Kinematics of Discrete and Continuum Dislocations Models
, 2015 The Continuum Dislocation Dynamics (CDD) theory and the Discrete Dislocation Dynamics (DDD) method are compared based on concise mathematical formulations of the coarse graining of discrete data.
Po, Giacomo, Sandfeld, Stefan
core +1 more source
A combined neuro fuzzy-cellular automata based material model for finite element simulation of plane strain compression [PDF]
, 2007 This paper presents a modelling strategy that combines Neuro-Fuzzy methods to define the material model with Cellular Automata representations of the microstructure, all embedded within a Finite Element solver that can deal with the large deformations of
Abbod, MF +5 more
core +1 more source
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
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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
, 2016 Plasticity is governed by the evolution of, in general anisotropic, systems of dislocations. We seek to faithfully represent this evolution in terms of density-like variables which average over the discrete dislocation microstructure.
Monavari, Mehran +2 more
core +1 more source
Nanoindentation and incipient plasticity [PDF]
, 1999 This paper presents a large-scale atomic resolution simulation of nanoindentation into a thin aluminum film using the recently introduced quasicontinuum method.
Miller, R. +3 more
core +1 more source
Size-dependent geometrically necessary dislocation structures in single-crystalline tungsten
Journal of Materials Research, 2022 Wedge indentation experiments were conducted to study the depth dependence of geometrically necessary dislocation (GND) structures in single-crystalline tungsten.
Jin Wang +4 more
semanticscholar +1 more source
Crystal Plasticity Modeling of Dislocation Density Evolution in Cellular Dislocation Structures
MetalsThe complex thermal cycles during the solidification process in metal additive manufacturing (AM) lead to the formation of high-density dislocation networks, organizing into submicron-scale cellular structures.
Md Mahabubur Rohoman, Caizhi Zhou
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Materials Science and Technology, 2022 The present study investigated the geometrically necessary dislocation (GND) with the influence of the surface roughness by establishing the relation of roughness in GND for indentation.
Weng Mei Kok +5 more
semanticscholar +1 more source