Results 241 to 250 of about 3,300,976 (283)

Trigonometric gradient microstructures in additively manufactured single crystals enable strength-ductility synergy and programmable performance. [PDF]

Nat Commun
Guo Z, Li Y, Fan L, Wu S, Hu D, Peng G, Lin F, Zhang YW, Xu Y, Yan W.   +9 more
europepmc   +1 more source

Archeology-inspired enhancement strategy for aluminum alloys. [PDF]

iScience
Feng S, Wang B, Liu Y, Wei Z, Zhang B, Xu B, Song ZQ, Wang LM, Yin Z, Zhang X, Liu RP.   +10 more
europepmc   +1 more source

Engineering bi-directional microstructural heterogeneity through mechanical surface treatment.

Mater Des
Oranli E, Heydari Astaraee A, Novelli M, Grosdidier T, Guagliano M, Bagherifard S.   +5 more
europepmc   +1 more source

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Geometrically necessary dislocation and size-dependent plasticity

Scripta Materialia, 2003
Abstract There has recently been a strong interest in modeling size-dependent plasticity in metals based on the concept of geometrically necessary dislocations. This article presents a brief summary of our viewpoints on geometrically necessary dislocations and their role in the development of continuum plasticity theories with an intrinsic material ...
Huajian Gao
exaly   +3 more sources

Experimental lower bounds on geometrically necessary dislocation density

International Journal of Plasticity, 2010
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
J W Kysar
exaly   +2 more sources

Assessment of geometrically necessary dislocation levels derived by 3D EBSD

Acta Materialia, 2015
Abstract Existing alternatives for the calculation of geometrically necessary dislocation (GND) densities from orientation fields are discussed. Importantly, we highlight the role of reference frames and consider different sources of error. A well-controlled micro cantilever bending experiment on a copper bicrystal has been analyzed by 3-dimensional ...
Dierk Raabe, S Zaefferer
exaly   +3 more sources

A dislocation density based constitutive model for crystal plasticity FEM including geometrically necessary dislocations

Acta Materialia, 2006
A dislocation density based constitutive model for face-centred cubic crystals is introduced and implemented into a crystal plasticity finite element framework. The approach assumes a homogeneous dislocation structure and tracks the dislocation evolution on each slip system.
Anxin Ma, Franz Roters, Dierk Raabe
exaly   +3 more sources

Non-equivalence contribution of geometrically necessary dislocation and statistically stored dislocation in work-hardened metals

Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing, 2022
Qinyang Zhao, Yongnan Chen
exaly   +2 more sources

Character and Distribution of Geometrically Necessary Dislocations in Polycrystalline Tantalum

Microscopy and Microanalysis, 2023
Abstract Geometrically necessary dislocations (GNDs) play a key role in accommodating strain incompatibility between neighboring grains in polycrystalline materials. One critical step toward accurately capturing GNDs in deformation models involves studying the microstructural features that promote GND accumulation and the resulting ...
Landon T Hansen, Jay D Carroll, Eric R Homer, Robert H Wagoner, Guowei Zhou, David T Fullwood   +5 more
openaire   +2 more sources

Resolving localized geometrically necessary dislocation densities in Al-Mg polycrystal via in situ EBSD

Acta Materialia
The distribution of geometrically necessary dislocation (GND) densities is critical to understanding the heterogeneous plastic deformation at intragranular scales in polycrystals.
Hongru Zhong, Qiwei Shi, Chengyi DAN
exaly   +2 more sources