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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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Koralnik, Milena
Warsaw University of Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (18/18 displayed)
- 2024Microstructural, corrosion and mechanical properties of a WE43 alloycitations
- 2024Microstructural, corrosion and mechanical properties of a WE43 alloy: conventional extrusion versus SPDcitations
- 2023Microstructure and properties of an AZ61 alloy after extrusion with a forward-backward oscillating die without preheating of the initial billetcitations
- 2022The Effect of Extrusion Ratio on the Corrosion Resistance of Ultrafine-Grained Mg-4Li-3Al-Zn Alloy Deformed Using Extrusion with a Forward-Backward Oscillating Diecitations
- 2022Evolution of microstructure dependent corrosion properties of ultrafine AZ31 under conditions of extrusion with a forward backward oscillating diecitations
- 2022A comparison of the microstructure-dependent corrosion of dual-structured Mg-Li alloys fabricated by powder consolidation methods: Laser powder bed fusion vs pulse plasma sinteringcitations
- 2022Corrosion behavior of fine-grained Mg-7.5Li-3Al-1Zn fabricated by extrusion with a forward-backward rotating die (KoBo)citations
- 2022The Impact of Retained Austenite on the Mechanical Properties of Bainitic and Dual Phase Steelscitations
- 2021Studies of Bainitic Steel for Rail Applications Based on Carbide-Free, Low-Alloy Steelcitations
- 2020The analysis of microstructure and texture evolution in polycrystal and single crystals of nickel after hydrostatic extrusion processcitations
- 2019Low-cycle fatigue behaviour and microstructural evolution of pearlitic and bainitic steelscitations
- 2019Mechanical properties and microstructure of Inconel 625 cylinders used in aerospace industry subjected to flow forming with laser and standard heat treatmentcitations
- 2019The influence of combined hydrostatic extrusion and rolling on the microstructure, texture and mechanical properties of Al-Li alloyscitations
- 2019Effects of Heat Treatment Parameters on the Microstructure and Properties of Bainitic Steelcitations
- 2018Fatigue behavior of 6xxx aluminum alloy processed by severe plastic deformation
- 2017Comparison of corrosion resistance of glass fiber reinforced composites and steels applicable for extraction pipes
- 2017The effect of deformation degree on the microstructure of the 6060 aluminium alloy
- 2016The influence of the complex deformation on the microstructure and mechanical properties of the model Al-Li alloys / Wpływ złożonego sposobu odkształcenia na mikrostrukturę i właściwości mechaniczne modelowych stopów Al-Licitations
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document
Fatigue behavior of 6xxx aluminum alloy processed by severe plastic deformation
Abstract
The 6xxx series aluminum alloys are widely used in the industry because of the combination of good mechanical properties and low density, exhibited of good corrosion resistance in many service environments and possess relatively good formability. In this study low-cycle fatigue tests were performed in ultrafine-grained (UFG) Al-Mg-Si alloy processed by hydrostatic extrusion (HE). This process can be classified as a severe plastic deformation (SPD) method and their advantage is possibility to obtain large amount of the material with a finely divided microstructure. The HE process was carried out on samples after solution treatment at 530°C during 1 hour with water quenching. As a result of the deformation, two degrees of total deformation (with value 1.8 and 4.6) were obtained, then samples were subjected to aging treatments. The fatigue tests were undertaken in the strain control with constant strain rate of 2B10-3 s-1, using standard round specimens. The cyclic stress–strain curves were determined using one specimen for each imposed strain level. The low-cycle fatigue results are used for the characterization of the cyclic plastic response and the fatigue live of the alloy. A comparison was made between the UFG state subjected to the HE process after two types of aging treatment, and the coarse-grained (CG) state of the material. The microstructure studies were performed using transmission electron microscope (TEM). It was shown that HE process leads to formation of the strong defected UFG microstructure with an average grain size of about 300 nm. The primary precipitates (AlFeSi and Mg2Si) and β'' phase creating after aging treatment were observed. The fatigue fracture surfaces were observed using a scanning electron microscope (SEM). The area of fatigue crack initiation in the material was located on the surface of specimens. The presence of typical area of stable crack growth and unstable crack growth with ductile fracture surface have been demonstrated. The results obtained in the fatigue tests of CG material demonstrated cyclic hardening at each strain amplitudes. The UFG samples after natural ageing showed cyclic softening at the beginning and then cyclic hardening up to break off, whereas for deformed samples after aging treatment the slight long term cyclic softening were observed.