Results 31 to 40 of about 3,300,976 (283)

Extraordinary strength-ductility synergy in a heterogeneous-structured β -Ti alloy through microstructural optimization

open access: yesMaterials Research Letters, 2019
This paper reports on a heterogeneous-structured β-Ti alloy with an exceptional combination of high strength and ductility, resulting from optimized hierarchical features in a lamellar microstructure.
Sumin Shin   +3 more
doaj   +1 more source

New insights on dislocation forming mechanism of nickel-based superalloy fabricated by laser powder bed fusion

open access: yesJournal of Materials Research and Technology
In this work, the forming mechanism of dislocation in laser powder bed fusion (LPBF) built IN738LC alloy was elucidated by studying the intrinsic relationships between the density and distribution of dislocation and the orientation and size of dendrite ...
Mingchuan Li   +4 more
doaj   +1 more source

Electropulsing treatment-induced the enhanced recrystallization of deformed Al0.1CoCrFeNi high-entropy alloy at lower temperature

open access: yesJournal of Materials Research and Technology, 2023
It is urgent to explore an efficient treatment strategy to obtain characteristic microstructures for better mechanical properties of alloys in an era of energy shortage.
Yafei Wang   +3 more
doaj   +1 more source

Geometrically nonlinear analysis of thin-walled open-section composite beams [PDF]

open access: yes, 2010
A geometrically nonlinear model for general thin-walled open-section composite beams with arbitrary lay-ups under various types of loadings based on the classical lamination theory is presented.
Lee, Jaehong, Vo, Thuc
core   +1 more source

Plasticity of crystals and interfaces: From discrete dislocations to size-dependent continuum theory [PDF]

open access: yesTheoretical 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

The Role of Geometrically Necessary Dislocations in Cantilever Beam Bending Experiments of Single Crystals [PDF]

open access: yesMaterials, 2017
The mechanical behavior of single crystalline, micro-sized copper is investigated in the context of cantilever beam bending experiments. Particular focus is on the role of geometrically necessary dislocations (GNDs) during bending-dominated load conditions and their impact on the characteristic bending size effect.
Husser, E., Bargmann, S.
openaire   +3 more sources

A slip-gradient-based dislocation density crystal plasticity model for predicting GND evolution and grain-scale plastic deformation in a tantalum oligocrystal

open access: yesPhilosophical Magazine Letters
This work presents crystal plasticity finite element (CPFEM) simulations to investigate the grain-scale plastic deformation in an oligocrystalline tantalum specimen subjected to different strain levels, using initial crystallographic orientations derived
Nilesh Kumar, Hyuk Jong Bong
doaj   +1 more source

Geometrically nonlinear analysis of thin-walled composite box beams [PDF]

open access: yes, 2009
A general geometrically nonlinear model for thin-walled composite space beams with arbitrary lay-ups under various types of loadings has been presented by using variational formulation based on the classical lamination theory.
Lee, Jaehong, Vo, Thuc
core   +1 more source

Investigation of the mechanism of the indentation size effect for titanium

open access: yesMechanical Engineering Journal, 2019
In this study, we investigated the mechanism of the indentation size effect for Ti, whose crystal structure is hexagonal close-packed. Indentation tests were performed for two types of single-crystal Ti with different crystal orientations: (0001) and ...
Shota HASUNUMA   +2 more
doaj   +1 more source

Particle interspacing effects on the mechanical behavior of a Fe–TiB2 metal matrix composite using FFT-based mesoscopic field dislocation mechanics

open access: yesAdvanced Modeling and Simulation in Engineering Sciences, 2020
This paper presents an application to metal matrix composites (MMCs) of an enhanced elasto-viscoplastic Fast Fourier Transform (EVP-FFT) formulation coupled with a phenomenological continuum Mesoscale Field Dislocation Mechanics (MFDM) theory.
J. Genée   +4 more
doaj   +1 more source

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