Results 81 to 90 of about 21,684 (253)

Spontaneous Interlayer Charge Transfer near the Magnetic Quantum Limit

, 1997
Experiments reveal that a confined electron system with two equally-populated layers at zero magnetic field can spontaneously break this symmetry through an interlayer charge transfer near the magnetic quantum limit. New fractional quantum Hall states at
A. H. MacDonald, B. I. Halperin, B. I. Halperin, H. C. Manoharan, H. C. Manoharan, H. C. Manoharan, J. Hu, L. Zheng, M. B. Santos, M. Shayegan, P. P. Ruden, R. Price, S. J. Papadakis, S. Narasimhan, T. S. Lay, T. Sajoto, Y. W. Suen, Y. W. Suen, Y. W. Suen   +18 more
core   +1 more source

The Structural Refinement of Commercial‐Purity Copper Processed by Equal Channel Angular Pressing with Low Strain Amplitude

Advanced Engineering Materials, Volume 27, Issue 21, November 2025.
Equal channel angular pressing of commercial pure copper under low strain amplitude (≈0.48) induces concurrent continuous and localized discontinuous dynamic recrystallization, forming a duplex structure influenced by strain heterogeneity and recovery. Moderate hardening after 4–12 passes results from progressive high‐angle grain boundary formation via
Paula Cibely Alves Flausino, Nayara A. N. da Silva, Bárbara C. de Almeida, Taise M. Manhabosco, Elaine C. S. Corrêa, Maria T. P. Aguilar, Paulo R. Cetlin   +6 more
wiley   +1 more source

Linking Heat Treatment to Plastic Deformation in Pearlitic Steels Through Mesoscale Modeling

Advanced Engineering Materials, Volume 27, Issue 21, November 2025.
Surface wear on rail and wheel steels results from surface deformation during use. This research uses mathematical models to forecast the plastic behavior of pearlitic steels, connected to the microstructure formed during heat treatment. While the cooling rate impacts the steels’ strength, the size of prior austenite grains and blocks does not ...
Saham Sadat Sharifi, Hamed Davoodi Jooneghani, Maria Domankova, Klaus Six, Gerald Trummer, Maria Cecilia Poletti   +5 more
wiley   +1 more source

The precipitation behavior of MgZn2 and Mg4Zn7 phase in Mg-6Zn (wt.%) alloy during equal-channel angular pressing

Journal of Magnesium and Alloys, 2017
As-extruded Mg-6Zn (wt.%) Alloy was subjected to severe plastic deformation (SPD) by the equal-channel angular pressing(ECAP) at 160 oC. The results of tensile tests at room temperature showed that two passes ECAP resulted in a remarkable improvement of ...
Kai Yan, Jing Bai, Huan Liu, Zhao-Yang Jin   +3 more
doaj   +1 more source

Optimizing the ECAP processing parameters of pure Cu through experimental, finite element, and response surface approaches

Reviews on Advanced Materials Science, 2023
The main aim of the current work is to investigate the effect of equal channel angular pressing (ECAP) processing parameters, namely, number of passes, ECAP die angle, route type, and processing temperature on the mechanical and electrical properties of ...
Alateyah Abdulrahman I., El-Shenawy Mahmoud, Nassef Ahmed, El-Hadek Medhat, Ahmed Mohamed M. Z., Kouta Hanan, El Sanabary Samar, El-Garaihy Waleed H.   +7 more
doaj   +1 more source

Microstructure and strength of metals processed by severe plastic deformation [PDF]

, 2006
The microstructure of f.c.c. metals (Al, Cu, Ni) and alloys (Al-Mg) processed by severe plastic deformation (SPD) methods is studied by X-ray diffraction line profile analysis.
Chinh, Nguyen Quang, Gubicza, Jenő, Langdon, T. G., Ungár, Tamás   +3 more
core  

Determining the probability of cyanobacterial blooms: the application of Bayesian networks in multiple lake systems [PDF]

, 2015
A Bayesian network model was developed to assess the combined influence of nutrient conditions and climate on the occurrence of cyanobacterial blooms within lakes of diverse hydrology and nutrient supply.
Bois, Julie, Brookes, Justin D., Chorus, Ingrid, Hamilton, David P., Hanson, Paul C., Hipsey, Matthew R., Kim, Bomchul, Qin, Boqiang, Rigosi, Anna, Rusak, James A., Sparber, Karin, Watkinson, Andrew J.   +11 more
core   +2 more sources

Characterization of Diffusion‐Creep Olivine Fabric and Its Identification in Natural Peridotite: Repeated Pure Shear and Equal‐Channeling Angular Pressing Tests

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 11, November 2025.
Abstract We performed repeated pure shear and equal‐channel angular pressing tests on Fe‐free olivine +10 or 20 vol% diopside aggregates to investigate the characteristics of crystallographic preferential orientation (CPO) development in olivine during diffusion creep.
N. Kim, S. Jiang, T. Hiraga
wiley   +1 more source

Deformation Behavior of La2O3‐Doped Copper during Equal Channel Angular Pressing

Advanced Engineering Materials, Volume 27, Issue 20, October 2025.
By additions of strengthening elements and/or structure optimization, the mechanical properties of copper can be increased while keeping favorable electric conductivity. By combining addition of La2O3 and processing by equal channel angular pressing, substructure development is achieved, leading to increase in microhardness to more than double the ...
Lenka Kunčická, Josef Walek, Radim Kocich   +2 more
wiley   +1 more source

Quasi-Stationary Strength of ECAP-Processed Cu-Zr at 0.5 T_m

Metals, 2019
The influence of the grain structure on the tensile deformation strength is studied for precipitation-strengthened Cu-0.2%Zr at 673K. Subgrains and grains are formed by equal channel angular pressing (ECAP) and annealing.
Wolfgang Blum, Jiři Dvořák, Petr Král, Philip Eisenlohr, Vaclav Sklenička   +4 more
doaj   +1 more source