Results 81 to 90 of about 154,665 (296)

Elastic Turbulence in Shear Banding Wormlike Micelles [PDF]

Physical Review Letters, 2010
We study the dynamics of the Taylor-Couette flow of shear banding wormlike micelles. We focus on the high shear rate branch of the flow curve and show that for sufficiently high Weissenberg numbers, this branch becomes unstable. This instability is strongly sub-critical and is associated with a shear stress jump.
Fardin, Marc-Antoine, Lopez, Diego, Crozo, Julien, Grégoire, Guillaume, Cardoso, Olivier, Mckinley, Garett Huw, Lerouge, Sandra   +6 more
openaire   +5 more sources

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Shear‐Band Dynamics in Metallic Glasses

Advanced Functional Materials, 2015
The future of metallic glasses as an advanced structural and functional material will to a great extent depend on the understanding and control of their mesoscopic flow defects called shear bands. These defects are sweet‐and‐sour; sweet because they mediate macroscopic plasticity at room temperature, and sour because they quickly promote failure.
Maass Robert, Loeffler Joerg F.
openaire   +2 more sources

Effect of Laser Deoxidation on Adhesive‐Bonded Aluminum in an Oxygen‐Free Atmosphere

Advanced Engineering Materials, EarlyView.
This study investigates laser ablation of aluminum under oxygen‐free conditions. The goal is to produce oxide‐free substrates that enable improved adhesive bonding with epoxy. Optimized laser parameters (90% overlap, 300 µJ) combined with oxide‐free substrates result in the highest tensile strength of the adhesive bond.
Sandra Gerland, Finn‐Lennard Janthur, Sarah Seffer, Jörg Hermsdorf, Ludger Overmeyer, Annika Raatz   +5 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

Mechanical properties of Zr_(57)Nb_5Al_(10)Cu_(15.4)Ni_(12.6) metallic glass matrix particulate composites [PDF]

, 1999
To increase the toughness of a metallic glass with the nominal composition Zr_(57)Nb_5Al_(10)Cu_(15.4)Ni_(12.6), it was used as the matrix in particulate composites reinforced with W, WC, Ta, and SiC. The composites were tested in compression and tension
Choi-Yim, H., Conner, R. D., Johnson, W. L.   +2 more
core  

Transient shear banding in time-dependent fluids [PDF]

Physical Review E, 2013
We study the dynamics of shear-band formation and evolution using a simple rheological model. The description couples the local structure and viscosity to the applied shear stress. We consider in detail the Couette geometry, where the model is solved iteratively with the Navier-Stokes equation to obtain the time-evolution of the local velocity and ...
Illa, Xavier, Puisto, Antti, Lehtinen, Arttu, Mohtaschemi, Mikael, Alava, Mikko, J.   +5 more
openaire   +7 more sources

Four‐Point Bending Tests at High Temperatures on Commercial MgO‐C Refractory Bricks with and Without Recyclate Considering Different Carbon Contents

Advanced Engineering Materials, EarlyView.
Four‐point bending tests are conducted in an argon atmosphere on commercial MgO‐C brick grades with and without MgO‐C recyclate from room temperature up to 1300 °C. No detrimental effect of the MgO‐C recyclates on bending strength is found. Instead, a decisive influence of the total carbon content is observed, with lower total carbon contents ...
Alexander Schramm, Lukas Knöchel, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +5 more
wiley   +1 more source

Nanocrystalline Phase Formation inside Shear Bands of Pd-Cu-Si Metallic Glass

Advances in Materials Science and Engineering, 2014
Pd77.5Cu6Si16.5 metallic glass was prepared by fluxing treatment and water quenching method. To avoid possible artifacts, shear bands were created by indentation after TEM sample preparation.
Yang Shao, Guannan Yang, Kefu Yao
doaj   +1 more source

Melt-preferred orientation, anisotropic permeability, and melt-band formation in a deforming, partially molten aggregate

, 2015
Shear deformation of partially molten rock in laboratory experiments causes the emergence of melt-enriched sheets (bands in cross-section) that are aligned at about 15-20 degrees to the shear plane.
Katz, Richard F., Taylor-West, Jesse
core   +2 more sources