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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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Maziarz, Wojciech
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (18/18 displayed)
- 2024Influence of Chemical Composition on Structure and Mechanical Properties of Vacuum-Carburized Low-Alloy Steelscitations
- 2024Adaptive Phase or Variant Formation at the Austenite/Twinned Martensite Interface in Modulated Ni–Mn–Ga Martensitecitations
- 2024Microstructure and magnetic properties of Nanomet compacted by spark plasma sintering
- 2024Effect of twist-channel angular pressing on precipitation in Al–Mg–Zn–Ga alloys
- 2022Comparison of Physicochemical, Mechanical, and (Micro-)Biological Properties of Sintered Scaffolds Based on Natural- and Synthetic Hydroxyapatite Supplemented with Selected Dopants.citations
- 2022Comparison of Physicochemical, Mechanical, and (Micro-)Biological Properties of Sintered Scaffolds Based on Natural- and Synthetic Hydroxyapatite Supplemented with Selected Dopantscitations
- 2021Microstructure and magnetic properties of selected laser melted Ni-Mn-Ga and Ni-Mn-Ga-Fe powders derived from as melt-spun ribbons precursorscitations
- 2021Suppression and Recovery of Martensitic Transformation and Magnetism in Mechanically and Thermally Treated Magnetic Shape‐Memory Ni−Mn−Ga Melt‐Spun Ribbonscitations
- 2021Structure and magnetic properties of thermodynamically predicted rapidly quenched Fe85-xCuxB15 alloyscitations
- 2019Composite Nanofibers Containing Multiwall Carbon Nanotubes as Biodegradable Membranes in Reconstructive Medicinecitations
- 2019Microstructural anisotropy, phase composition and magnetic properties of as-cast and annealed Ni-Mn-Ga-Co-Cu melt-spun ribbonscitations
- 2019Microstructural origins of martensite stabilization in Ni49Co1Mn37.5Sn6.5In6 metamagnetic shape memory alloycitations
- 2019On the magnetic contribution to the inverse magnetocaloric effect in Ni-Co-Cu-Mn-Sn metamagnetic shape memory alloyscitations
- 2019The evolution of microstructure and magneto-structural properties of heat treated ni-mn-sn-in heusler alloys sintered by vacuum hot pressing
- 2018Structure and inverse magnetocaloric effect in Ni-Co-Mn-Sn(Si) Heusler alloyscitations
- 2018Study of the microstructure, tensile properties and hardness of AZ61 magnesium alloy subjected to severe plastic deformationcitations
- 2017Structure and properties of AZ31 magnesium alloy after combination of hot extrusion and ECAPcitations
- 2005Microstructure and mechanical properties of nanocrystalline titanium and Ti-Ta-Nb alloy manufactured using various deformation methodscitations
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article
Microstructure and mechanical properties of nanocrystalline titanium and Ti-Ta-Nb alloy manufactured using various deformation methods
Abstract
<p>Mechanical properties and TEM microstructure studies have been carried out of nanocrystalline titanium, Ti10Nb10Ta and Ti10Nb obtained by various technological routes, including: powder metallurgy (ball milling and hot pressing), Equal Channel Angular Pressing (ECAP), hydroextrusion (HE) and high pressure torsion (HPT). The HE processed material in the form of 20 mm rods was extruded at a strain rate of 2.5 × 10 <sup>2</sup> s <sup>-1</sup> to a diameter of 3 mm, which corresponds to the true strain of 3.8. Resulting Yield Strength (YS) at the crystal size below 80 nm exceeded 1000 MPa, i.e. attained a value of 3 times more than the initial material. Equal-Channel Angular Pressing (ECAP) at 723 K was applied to produce nanostructured titanium. Grain refinement was observed already after one pass (considerable number of grains with d < 100 nm was noted). It was accompanied by a growth of strength and slight decrease in the elongation. ECAP processing up to 4 passes resulted in further slight growth of strength and further slight loss of elongation. The titanium powder prepared by ball milling in a high energy mill decreased its crystal size down to 10 nm and reached microhardness HV <sub>20</sub> = 1000. The additions of Nb and Ta resulted in a similar grain refinement but lower hardness. Uniaxial hot pressing at 650°C, followed by vacuum annealing resulted in similar microhardness as for powders. TEM studies performed using quantitative metallography allowed to estimate mean grain size at 150 nm. HPT technique at the pressure of 5 GPa resulted in finest grain size as compared to other preparation techniques leading to nanoscale grain refinement in Ti samples. The mean crystal size was estimated at about 30 nm. © 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.</p>