Results 81 to 90 of about 31,262 (307)

Mechanical properties of copper processed by Equal Channel Angular Pressing – a review [PDF]

Fracture and Structural Integrity, 2012
The Equal Channel Angular Pressing is a hardening treatment with which ductile metals can be processed to refine their grain and sub-grain structure. This process enhances the mechanical strength of metals in terms of tensile strength, stress-controlled ...
Ludvík Kunz, Luca Collini
doaj  

Structure and microstructure evolution of Al-Mg-Si alloy processed by equal-channel angular pressing [PDF]

, 2017
An ultrafine grained Al–Mg–Si alloy was prepared by severe plastic deformation using the equal-channel angular pressing (ECAP) method. Samples were ECAPed through a die with an inner angle of F = 90° and outer arc of curvature of ¿ = 37° from 1 to 12 ...
A Bletry, A Griger, A Korchef, A Korchef, A Rebhi, AP Fuzayev, B Bay, C Reyes-Ruiz, F Dalla Torre, G Biroli, GA Edwards, HE Swanson, J Gubicza, J Gubicza, J Sort, J. M. Cabrera-Marrero, JI Langford, JI Langford, JY Huang, K Gupta, K Matsuda, LV Azàroff, M Kawasaki, M Mhadhbi, M Vedani, M. A. Rekik, M. Khitouni, MJ Zehetbauer, MS Senthil Saravanan, RS Yassar, RZ Valiev, RZ Valiev, RZ Valiev, S Fare, S Ferrasse, SK Panigrahi, T Ungar, T. Khelfa, WJ Kim, Y Iwahashi, Y Iwahashi, Y Iwahashi, Y Noda, YH Zhao, Z Horita   +44 more
core   +2 more sources

Photoswitching Conduction in Framework Materials

Advanced Functional Materials, EarlyView.
This mini‐review summarizes recent advances in state‐of‐the‐art proton and electron conduction in framework materials that can be remotely and reversibly switched on and off by light. It discusses the various photoswitching conduction mechanisms and the strategies employed to enhance photoswitched conductivity.
Helmy Pacheco Hernandez, Stefan Hecht, Wolfgang Wenzel, Lars Heinke, Mariana Kozlowska   +4 more
wiley   +1 more source

Analysing the combined effect of crystallographic orientation and grain refinement on mechanical properties and corrosion behaviour of ECAPed ZE41 Mg alloy

Journal of Magnesium and Alloys, 2020
Two step equal channel angular pressing carried out on as cast ZE41 Mg alloy resulted in a remarkable grain refinement. As compared to grain size of 46 µm in as cast sample, refinement upto 2.5 µm was achieved after 8th pass equal channel angular ...
S. Prithivirajan, S. Narendranath, Vijay Desai   +2 more
doaj   +1 more source

CYCLIC PLASTIC BEHAVIOUR OF UFG COPPER UNDER CONTROLLED STRESS AND STRAIN LOADING [PDF]

, 2011
The influence of stress- and strain-controlled loading on microstructure and cyclic plastic behaviour of ultrafine-grained copper prepared by equal channel angular pressing was examined.
Karel Obrtlík, Lucie Navrátilová, Ludvík Kunz   +2 more
core   +1 more source

Microembossing of ultrafine grained Al: microstructural analysis and finite element modelling

, 2010
Ultra fine grained (UFG) Al-1050 processed by equal channel angular pressing (ECAP) and UFG Al-Mg-Cu-Mn processed by high pressure torsion (HPT) were embossed at both room temperature and 300 °C, with the aim of producing micro-channels. The behaviour of
Bah, Mamadou T., Gao, Nong, Kraft, Michael, Moktadir, Zakaria, Qiao, Xiao Guang, Starink, Marco J., Zhang, Jiuwen   +6 more
core   +1 more source

Positron annihilation spectroscopy of vacancy-type defects hierarchy in submicrocrystalline nickel during annealing [PDF]

, 2014
Positron annihilation and X-ray diffraction analysis have been used to study submicrocrystalline nickel samples prepared by equal channel angular pressing.
Bordulev, Yuri Sergeevich, Korznikov, A. V., Kuznetsov, Pavel Viktorovich, Laptev, Roman Sergeevich, Lider, Andrey Markovich, Mikhailov, Andrey Anatolievich, Mironov, Yu. P., Rakhmatulina, T. V., Tolmachev, A. I.   +8 more
core   +1 more source

Microporous Microgel Assemblies Facilitating the Recruitment and Osteogenic Differentiation of Progenitor Cells for Bone Regeneration

Advanced Functional Materials, EarlyView.
There is a significant need for biomaterials with well‐defined stability and bioactivity to support tissue regeneration. In this study, we developed a tunable microgel platform that enables the decoupling of stiffness from porosity, thereby promoting bone regeneration.
Silvia Pravato, Haishuo Guan, Bianca M. Carrara, Mira Jacobs, Matteo Monticelli, Lukas Moser, Thomas Moragues, Andrew J. deMello, Tomaso Zambelli, Martin Ehrbar   +9 more
wiley   +1 more source

MOFs and COFs in Electronics: Bridging the Gap between Intrinsic Properties and Measured Performance

Advanced Functional Materials, EarlyView.
Metal‐organic frameworks (MOFs) and covalent organic frameworks (COFs) hold promise for advanced electronics. However, discrepancies in reported electrical conductivities highlight the importance of measurement methodologies. This review explores intrinsic charge transport mechanisms and extrinsic factors influencing performance, and critically ...
Jonas F. Pöhls, R. Thomas Weitz
wiley   +1 more source

Intensification of the process of equal channel angular pressing using ultrasonic vibrations

Frontier Materials & Technologies
The work presents a new method of equal channel angular pressing (ECAP) using powerful ultrasonic vibrations (UV). The authors have developed an original device of ultrasonic ECAP, in which the waveguide with the matrix are made as a single unit, and the
Vasily V. Rubanik, Marina S. Lomach, Vasily V. Rubanik Jr., Valery F. Lutsko, Sofya V. Gusakova   +4 more
doaj   +1 more source