Results 71 to 80 of about 77,601 (265)

Modeling Dislocation Cutting of γ′ Precipitates in Ni‐Base Superalloys: Linking Atomistic and Dislocation Dynamics Simulations

Advanced Engineering Materials, EarlyView.
Dislocation cutting of γ′ precipitates in Ni‐based superalloys is investigated by linking atomistic simulations with discrete dislocation dynamics. The critical cutting stress is shown to be governed by the antiphase boundary energy, while line tension effects promote edge‐preferred cutting.
Frédéric Houllé, Siwen Gao, Marc Fivel, Anxin Ma, Daria Smirnova, Sriram Anand, Arun Prakash, Julien Guénolé, Alexander Hartmaier, Erik Bitzek   +9 more
wiley   +1 more source

Triple Junctions as Dislocation‐Like Defects: The Role of Grain Boundary Crystallography Revealed by Experiment and Atomistic Simulation

Advanced Engineering Materials, EarlyView.
Grain boundary triple junctions are an essential ingredient of the microstructure of polycrystalline materials. In this study, a triple junction is observed using atomic‐resolution scanning transmission electron microscopy and characterized. Computer simulations reveal that the junction has a dislocation character that is determined by the joining ...
Tobias Brink, Saba Saood, Peter Schweizer, Jörg Neugebauer, Gerhard Dehm   +4 more
wiley   +1 more source

Exploring microstructure and texture evolution in AZX311 Mg alloy under cyclic shear deformation

Journal of Magnesium and Alloys
The current study focuses on investigating the effect of in-plane cyclic shear (IPCS) on the microstructure and texture evolution in an AZX311 Mg alloy sheet using a customized in-plane shear jig.
Mahesh Panchal, Lalit Kaushik, Ravi Kottan Renganayagalu, Shi-Hoon Choi, Jaiveer Singh   +4 more
doaj   +1 more source

On Deformation of Granular Material in Simple Shear

Soils and Foundations, 1987
ABSTRACT Paying attention to the important mechanical features peculiar to granular materials: friction and dilatancy, fundamental considerations on the deformation of sand under simple shear condition are made. First, adopting the simple sliding block theory, the two state functions of (p and S are analitically derived and a basic deformation model ...
openaire   +2 more sources

Shear deformation in beam theory.

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A, 1988
The elementary beam theory is based on the Bernoulli-Euler hypothesis, in which no shear deformation is allowed to occur excluding the case of torsional deformation. This theory involves some theory to be improved. We consider here a refined beam theory taking into account the effect of shear deformation. This theory may be applied to any cross section
KATORI, Hiroaki, NISHIMURA, To-ru
openaire   +2 more sources

Microstructure, Thermal Transport, and Dry‐Sliding Tribology of Powder‐Metallurgy Al7075 Composites Reinforced With Sol–Gel‐Derived ZnO–rGO Hybrid Nanoparticles

Advanced Engineering Materials, EarlyView.
Sol–gel‐derived ZnO–rGO hybrid nanoparticles enable Al7075 powder‐metallurgy composites to achieve concurrent gains in hardness and thermal conductivity while markedly lowering friction and wear. The hybrid architecture couples ZnO‐based load support with rGO‐assisted lamellar sliding and heat spreading, revealing a promising route toward lightweight ...
Bunyamin Aksakal, Cevher Kursat Macit, Merve Ayık, Hakan Tutumlu   +3 more
wiley   +1 more source

Experimental Study on Full-Scale Shear Deformation and Damage Detection of Casing

Shiyou jixie
To understand the deformation and damage behaviors of casing under shear load,a full-scale casing shear loading test system was built to conduct shear loading and deformation damage tests on the full-scale casing.The loading load and deformation amount ...
Sun Jing, Zhang Laibin, Fan Jianchun, Yang Ziwei, Zhang Zhitong   +4 more
doaj  

Advanced Electron Microscopy and Microcomputed Tomography Analysis of Single‐Crystal Ni‐Base Superalloys After Short‐Term Multiaxial Creep

Advanced Engineering Materials, EarlyView.
This work studies the anisotropic behavior of circular notched tensile specimens of Ni‐base superalloy single crystals during high‐temperature tensile creep along [001], [110], and [111]. Correlative scale‐bridging imaging of specimens reveals early rupture along [110] because 1) plastic deformation proceeds faster at notch center; 2) more (brittle ...
Leonardo Agudo Jácome, Lijie Cao, Christoph Somsen, Johannes Boes, René Hesse, Werner Theisen, Gunther Eggeler   +6 more
wiley   +1 more source

Deformation Behavior of Ti₄₈Zr₁₈V₁₂Cu₅Be₁₇ Semi-Solid Amorphous Composites

Crystals
In the light of increasing research into amorphous composites and their applications, as-cast specimens of multicomponent Ti48Zr18V12Cu5Be17 amorphous composites were prepared via water-cooled copper mold suction casting.
Xinhua Huang, Junnan Li, Guang Wang, Bin Chen, Chenhao Wei, Yuejun Ouyang   +5 more
doaj   +1 more source

Design and Analysis of Compression–Torsion Coupling Metamaterials Using the Golden Section Method

Advanced Engineering Materials, EarlyView.
A novel compression–torsion metamaterial is engineered using inclined rods and symmetry breaking. To optimize its torsional performance, the golden section method is employed. The mechanical response of the metamaterial is validated through both numerical analysis and experimental validation.
Amirhossein Hassani, Sara Bagherifard
wiley   +1 more source