| People | Locations | Statistics |
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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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Gurau, Carmela
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (8/8 displayed)
- 2021The Effect of the In-Situ Heat Treatment on the Martensitic Transformation and Specific Properties of the Fe-Mn-Si-Cr Shape Memory Alloys Processed by HSHPT Severe Plastic Deformationcitations
- 2021Using High Speed High Pressure Torsion for Cu–13Al–4Ni Shape Memory Alloy Processingcitations
- 2020Structural characteristics of multilayered ni-ti nanocomposite fabricated by high speed high pressure torsion (Hshpt)citations
- 2019Structural Change in Ni-Fe-Ga Magnetic Shape Memory Alloys after Severe Plastic Deformationcitations
- 2016INFLUENCE OF THERMOMECHANICAL TREATMENTS ON CHARACTERISTIC OF CuAlNi SHAPE MEMORY ALLOY
- 2014EFFECT OF SEVERE AUSFORMING ON THE SHAPE MEMORY MICROSTRUCTURE OF A COPPER BASED ALLOY
- 2014HIGH SPEED HIGH PRESSURE TORSION EFFECTS ON A DIFFICULT DEFORMABLE SHAPE MEMORY ALLOY
- 2011Structural study of extruded CuAl13Ni4 shape memory alloy
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document
HIGH SPEED HIGH PRESSURE TORSION EFFECTS ON A DIFFICULT DEFORMABLE SHAPE MEMORY ALLOY
Abstract
<p>High pressure torsion (HPT) is a severe plastic deformation process, able to reduce grain size, down to nanostructure or amorphous level, in bulk materials. In the experiments a modified high speed HPT (HS-HPT) technique was used. It was ideally suited for products about 50 mm in diameter, contributing to a meaningful increase of mechanical properties. This type of severe plastic deformation generates large plastic deformation in entire volume of sample under the effect of high pressure cumulated with high rotation. On the strength of friction and pressure the sample was heated, took place grain fragmentation up to (ultra) fine grains, nanocrystalline or amorphous areas, without recrystallization. The effect of severe plastic deformation via High Pressure Torsion (HPT) on microstructure of the Cu-Al-Ni shape memory alloys was investigated by optical (OM). The reversible martensitic transformation temperatures were investigated using differential scanning calorimetry (DSC) as effect of microstructure refinement appropriate to different deformation degrees. The hardness tests demonstrate that creating ultrafine grain with high strength can produce reliable lightweight metallic parts. The presence of monoclinic and orthorhombic martensite, together with nanocrystalline areas were confirmed by X-ray diffraction (XRD).</p>