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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Jones, Ian
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (58/58 displayed)
- 2024Simulation and Experimental Analysis of Aerogel Attenuation for High Energy Alpha Particles in Fission Fusion Fragment Rocket Applications
- 2021A study on the phase transformation of γ2-Al8Mn5 to LT-Al11Mn4 during solutionizing in AZ91 alloycitations
- 2021The defect evolution in 1-D shocked tantalum single crystalscitations
- 2021Role of La addition for enhancing the corrosion resistance of Mg–Dy alloycitations
- 2020Mechanical property evaluation of second phase particles in a Mg–8Al-0.5Zn alloy using micropillar compressioncitations
- 2020Effect of misorientation angle and chromium concentration on grain boundary sensitisation in an austenitic stainless steelcitations
- 2020Effect of La addition on precipitation hardening in Mg–10Dy alloycitations
- 2019Mesoscopic quantitative chemical analyses using STEM-EDX in current and next generation polycrystalline Ni-based superalloyscitations
- 2018Contrasting the Effects of Cold Rolling on the Shock Response of Typical Face Centred Cubic and Body Centred Cubic Metalscitations
- 2018Contrasting the effects of cold rolling on the shock response of typical face centred cubic and body centred cubic metalscitations
- 2018The defect evolution in shock loaded tantalum single crystalscitations
- 2014Micro-tensile strength of a welded turbine disc superalloycitations
- 2014Microstructural characterisation and microanalysis of creep resistant steelscitations
- 2014Microstructure characterisation of an X70 grade pipeline steel and its dislocation development during Bauschinger testing
- 2013Genome-wide association analysis accounting for environmental factors through propensity-score matchingcitations
- 2012Line defects, planar defects and voids in SrTiO3 films grown on MgO by pulsed laser and pulsed laser interval depositioncitations
- 2011New insight on acoustoplasticity - Ultrasonic irradiation enhances subgrain formation during deformationcitations
- 2011TEM characterization of chemically synthesized copper-gold nanoparticlescitations
- 2010Microstructural investigation of strontium titanate films grown by interval pulsed laser depositioncitations
- 2010The role of aging on the mechanical and microstructural response of aluminum 6061 to one-dimensional shock loadingcitations
- 2010Characterisation of structural and surface speciation of representative commercially available cerium oxide nanoparticlescitations
- 2009Two-dimensional growth of SrTiO3 thin films on (001) MgO substrates using pulsed laser deposition and reflection high energy electron diffractioncitations
- 2009Burn-off of filamentous carbon and subsequent re-deposition on a 20Cr25Ni austenitic steelcitations
- 2009Comparison of structural, microstructural, and electrical analyses of barium strontium titanate thin filmscitations
- 2009Nanoscale defects and microwave properties of (BaSr)TiO3 ferroelectric thin filmscitations
- 2008Growth and Microstructural Studies of Strontium Titanate Films Grown by Standard and Interval Pulsed Laser Depositioncitations
- 2008Microstructures and mechanical properties of Nb-Ti-C alloyscitations
- 2008Effect of growth defects on microwave properties in epitaxial Ba0.5Sr0.5TiO3 thin films grown on (001) MgO by pulsed laser depositioncitations
- 2008Microstructure and composition of biosynthetically synthesised hydroxyapatitecitations
- 2007Microstructural study of a YBCO multilayer coated conductor cylindercitations
- 2007The mechanical properties and the deformation microstructures of the C15 Laves phase Cr2Nb at high temperaturescitations
- 2007Crystal structure and electrical characterisation of Bi2NbO5F: an Aurivillius oxide fluoridecitations
- 2006Microstructure of Homeoepitaxial SrTiO₃ Thin Films Grown by Laser Ablationcitations
- 2006The effects of iron on the creep properties of NiAlcitations
- 2006Microwave and Microstructural Properties of Ba₀.₅Sr₀.₅TiO₃ of Thin Film Coplanar Phase Shifterscitations
- 2005The microstructural evolution of NbAlV and ternary alloyscitations
- 2005Materials aspects of laser-ablation-deposited cuprate/manganate bilayers for spin-polarised injection devicescitations
- 2004Observation of tension/compression asymmetry in an Nb-Al-V alloycitations
- 2004Holes in YBa₂Cu₃0₇₋x Thin Films on Vicinal Strontium Titanate Substratescitations
- 2004Suzuki segregation in a binary Cu-Si alloycitations
- 2004Growth, Microwave Properties and Microstructure of Ba₀₊₀₅Sr₀₊₉₅TiO₃ Thin Filmscitations
- 2003Effects of Zn coating on the microstructure and magnetic properties of Nd-Fe-B magnetscitations
- 2003The oxidation of NdFeB magnetscitations
- 2003The Influence of Carbonyl Sulphide on the Inhibition of Filamentary Carbon Deposition on Stainless Steelcitations
- 2003On the Strength of γ-titanium aluminides during shock loadingcitations
- 2003Direct evidence for Suzuki segregation and Cottrell pinning in MP159 superalloy obtained by FEG(S)TEM/EDXcitations
- 2003Intermediate temperature creep mechanisms in Ni 3 Alcitations
- 2002The response of TiAl based alloys to one-dimensional shock loadingcitations
- 2002Microstructure of superconducting Hg0.5Cr0.5Sr2CuO4+delta thin films on SrTiO3citations
- 2002Oxygen-stabilised partial amorphization in a Zr₅₀Cu₅₀ alloycitations
- 2001Shock induced mechanical response of a gamma-TiAl alloycitations
- 2001Modelling of site occupancies in ternary B2 compounds in Nb-Ti-Al
- 2001Effects of boron, carbon and silicon additions on microstructure and properties of a Ti15Mo based beta titanium alloy
- 2001Electron-beam induced growth of bare silver nanowires from zeolite crystallites
- 2001Shear strength measurements in the TiAl-based alloy Ti-48Al-2Nb-2Cr-1B during shock loadingcitations
- 2001Crystallisation of oxygen-stabilised amorphous phase in a Zr50Cu50 alloycitations
- 2001The interaction between extended dislocations and antiphase domain boundaries - I: Superpartial separation and the yield stresscitations
- 2001Assessment and modelling of isothermal forging of intermetallic compounds - Part 4: NiAl
Places of action
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article
New insight on acoustoplasticity - Ultrasonic irradiation enhances subgrain formation during deformation
Abstract
Many industrial applications make use of ultrasonic vibration to soften metals. The existing understanding of such an acoustoplastic effect is one in which the ultrasonic irradiation either imposes additional stress waves to augment the quasi-static applied load, or causes heating of the metal, whereas the metal's intrinsic deformation resistance or mechanism is assumed to be unaltered by the ultrasound. In this study, indentation experiments performed on aluminum samples simultaneously excited by ultrasound reveal that the latter intrinsically alters the deformation characteristics of the metal. The deformation microstructures underneath the indents were investigated by a combination of cross-sectional microscopic techniques involving focused-ion-beam milling, transmission electron microscopy and crystal orientation mapping by electron backscattered diffraction. The softening effect of the ultrasound is found to constitute recovery associated with extensive enhancement of subgrain formation during deformation. By comparing the microstructures of samples deformed with and without simultaneous application of ultrasound, and those subsequently excited by ultrasound after deformation, the enhanced subgrain formation is proved to be one due to the combined application of the quasi-static loading and the ultrasound, but not a simple addition of the two. Similarly, by comparing with samples deformed while being simultaneously or subsequently heated up, the enhanced subgrain formation by the ultrasound is proved to be a lot greater than that due to the heat that it generates within the metal. Such effects of the ultrasound are interpreted by its ability to enhance dipole annihilation. The superimposed ultrasound causes dislocations to travel longer distances in a jerky manner, so that they can continuously explore until dipole annihilation. (C) 2010 Elsevier Ltd. All rights reserved.