Results 31 to 40 of about 1,064 (218)

Experimental evidence that shear bands in metallic glasses nucleate like cracks

Scientific Reports, 2022
Highly time-resolved mechanical measurements, modeling, and simulations show that large shear bands in bulk metallic glasses nucleate in a manner similar to cracks. When small slips reach a nucleation size, the dynamics changes and the shear band rapidly
Alan A. Long, Wendelin J. Wright, Xiaojun Gu, Anna Thackray, Mayisha Nakib, Jonathan T. Uhl, Karin A. Dahmen   +6 more
doaj   +1 more source

Crossing of shears bands in 196Pb

Zeitschrift für Physik A Hadrons and Nuclei, 1996
High-spin states in 196Pb have been populated using the reaction 170Er(30Si,4n). The previously observed shears bands in this nucleus have been extended and some of their transitions have been reordered. They now form regular bands with band crossings. One of the bands splits into two pathways at high spin.
G. Baldsiefen, H. Hübel, W. Korten, U. J. van Severen, J. A. Cizewski, N. H. Medina, D. R. Napoli, C. Rossi Alvarez, G. Lo Bianco, S. Signorelli   +9 more
openaire   +2 more sources

Deformation-driven catalysis of nanocrystallization in amorphous Al alloys

Beilstein Journal of Nanotechnology, 2016
Nanocrystals develop in amorphous alloys usually during annealing treatments with growth- or nucleation-controlled mechanisms. An alternative processing route is intense deformation and nanocrystals have been shown to develop in shear bands during the ...
Rainer J. Hebert, John H. Perepezko, Harald Rösner, Gerhard Wilde   +3 more
doaj   +1 more source

Structural mechanisms of formation of adiabatic shear bands [PDF]

Fracture and Structural Integrity, 2016
The paper focuses on the experimental and theoretical study of plastic deformation instability and localization in materials subjected to dynamic loading and high-velocity perforation.
Mikhail Sokovikov, Dmitry Bilalov, Vladimir Oborin, Vasiliy Chudinov, Sergey Uvarov, Yuriy Bayandin, Oleg Naimark   +6 more
doaj   +2 more sources

The genesis of adiabatic shear bands

Scientific Reports, 2016
AbstractAdiabatic shear banding (ASB) is a unique dynamic failure mechanism that results in an unpredicted catastrophic failure due to a concentrated shear deformation mode. It is universally considered as a material or structural instability and as such, ASB is hardly controllable or predictable to some extent.
P. Landau, S. Osovski, A. Venkert, V. Gärtnerová, D. Rittel   +4 more
openaire   +2 more sources

Shear band mediated microstructure in an accumulative roll bonded α-brass alloy during strain path changes and annealing

Journal of Materials Research and Technology
Strain path changes of the accumulative roll bonded 90Cu–10Zn brass and its influence on the shear band structure is the aim of the present study. The effect of post-annealing was also studied in terms of shear bands and texture development.
Mohammad Reza Toroghinejad, Mohammad Haghighifar, Vahid Yousefi Mehr   +2 more
doaj   +1 more source

Deformation Microstructure And Texture Transformations In FCC Metals Of Medium-To-High Stacking Fault Energy: Critical Role Of Micro- And Macro-Scale Shear Bands

Archives of Metallurgy and Materials, 2015
Microstructure and texture development in medium-to-high stacking fault energy face centred cubic metals were investigated in order to examine the role of lattice re-orientation on slip propagation across grain boundaries and to characterize the ...
Paul H., Miszczyk M. M.
doaj   +1 more source

The dynamics of a shear band [PDF]

Journal of the Mechanics and Physics of Solids, 2018
A shear band of finite length, formed inside a ductile material at a certain stage of a con- tinued homogeneous strain, provides a dynamic perturbation to an incident wave field, which strongly influences the dynamics of the material and affects its path to failure. The investigation of this perturbation is presented for a ductile metal, with reference
Diana Giarola, Domenico Capuani, Davide Bigoni   +2 more
openaire   +3 more sources

Degradation mechanism of the von Willebrand factor A2 domain by nattokinase

FEBS Letters, EarlyView.
Nattokinase, a natto‐derived protease, exhibits potent antithrombotic effects. This study demonstrates that nattokinase directly cleaves the von Willebrand factor (vWF) A2 domain in vitro. Unlike the native regulator ADAMTS13, nattokinase degrades folded vWF independently of shear stress.
Ryuichi Hyakumoto, Masatomo So, Ayako Furukawa, Kenji Sugase   +3 more
wiley   +1 more source

COMP–PMEPA1 axis promotes epithelial‐to‐mesenchymal transition in breast cancer cells

Molecular Oncology, EarlyView.
This study reveals that cartilage oligomeric matrix protein (COMP) promotes epithelial‐to‐mesenchymal transition (EMT) in breast cancer. We identify PMEPA1 (protein TMEPAI) as a novel COMP‐binding partner that mediates EMT via binding to the TSP domains of COMP, establishing the COMP–PMEPA1 axis as a key EMT driver in breast cancer.
Konstantinos S. Papadakos, Gilar Gorji‐bahri, Lejla Gradjan, Julia Zajac, Kacper Gil, Yvonne Thokozile Nduku, Anna M. Blom   +6 more
wiley   +1 more source