Investigation of microstructure and texture evolution of a Mg/Al laminated composite elaborated by accumulative roll bonding

Habila, Walid; Azzeddine, Hiba; Mehdi, Brahim; Tirsatine, Kamel; Baudin, Thierry; Helbert, Anne‐Laure; Brisset, François; Gautrot, Sébastien; Mathon, Marie‐Hélène; Bradai, Djamel

doi:10.1016/j.matchar.2018.11.010

Cited by 73 publications

(22 citation statements)

References 52 publications

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“…The scanned areas were 80 × 80 μm 2 with a 0.2 μm step size. The grainsize data were obtained using the usual clean up procedure with grain tolerance angle of 5° and a minimum grain size set at 5 pixels [21,[49][50][51][52]. All datum points with a confidence index lower than 0.05 were excluded from the analysis; the confidence index quantifies the reliability of the indexed pattern [53].…”

Section: Microstructural and Textural Observationsmentioning

confidence: 99%

On the evolution of microstructure, texture and corrosion behavior of a hot-rolled and annealed AZ31 alloy

Tighiouaret

Hanna

Azzeddine

et al. 2021

Materials Chemistry and Physics

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The microstructure and texture evolution of an AZ31 alloy were investigated after hot rolling and subsequent annealing using electron backscatter diffraction (EBSD). First, the alloy was hot-rolled at 350 °C up to low, medium and high strain (20, 50 and 85% of thickness reduction, respectively). The alloy samples where then annealed at 350 °C for 2, 10 and 60 minutes. The effect of strain level and annealing on corrosion behavior in seawater was also evaluated using electrochemical tests. At low strain, the microstructure was characterised by the absence of twinning, mainly due to the prior thermo-mechanical history of the as-received alloy. However, various modes of twinning were observed at medium strain. At high strain, the dynamic recrystallization process resulted in a microstructure with a typical basal texture. The results demonstrate that twins are responsible for the deviation of {0002} basal poles from normal towards the transversal direction. Annealing at 350°C for up to 60 min led to normal grain growth in all the samples. In medium and highly strained samples, the deformation texture was retained, while the low strain sample underwent noticeable changes due to the absence of dynamic recrystallization. A synergetic effect of grain refinement and texture weakening was responsible for the alloy's enhanced corrosion resistance.

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Section: Microstructural and Textural Observationsmentioning

confidence: 99%

On the evolution of microstructure, texture and corrosion behavior of a hot-rolled and annealed AZ31 alloy

Tighiouaret

Hanna

Azzeddine

et al. 2021

Materials Chemistry and Physics

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“…ARB is yet another SPD method that has been given less attention in near- α Ti alloys development, despite its successful application to Al alloys (Habila et al , 2019; Morovvati and Dariani, 2017; Wang et al , 2018), steel (Etemad et al , 2019; Lin et al , 2019; Nunes and Machado, 2018), CP titanium (Fattah-alhosseini et al , 2017; Karimi et al , 2018; Karimi et al , 2016) and other alloys and composites. The process involves rolling two precursor sheets at 50 per cent reduction thickness to obtain a stack of multilayered sheets with high plastic strain and ultrafine grains.…”

Section: Development Of High Strength Near-α Titanium Alloysmentioning

confidence: 99%

Mechanical properties of near alpha titanium alloys for high-temperature applications - a review

Tabie

Wang

et al. 2020

AEAT

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Purpose This paper aims to present a broad review of near-a titanium alloys for high-temperature applications. Design/methodology/approach Following a brief introduction of titanium (Ti) alloys, this paper considers the near-α group of Ti alloys, which are the most popular high-temperature Ti alloys developed for a high-temperature application, particularly in compressor disc and blades in aero-engines. The paper is relied on literature within the past decade to discuss phase stability and microstructural effect of alloying elements, plastic deformation and reinforcements used in the development of these alloys. Findings The near-a Ti alloys show high potential for high-temperature applications, and many researchers have explored the incorporation of TiC, TiB SiC, Y2O3, La2O3 and Al2O3 reinforcements for improved mechanical properties. Rolling, extrusion, forging and some severe plastic deformation (SPD) techniques, as well as heat treatment methods, have also been explored extensively. There is, however, a paucity of information on SiC, Y2O3 and carbon nanotube reinforcements and their combinations for improved mechanical properties. Information on some SPD techniques such as cyclic extrusion compression, multiaxial compression/forging and repeated corrugation and straightening for this class of alloys is also limited. Originality/value This paper provides a topical, technical insight into developments in near-a Ti alloys using literature from within the past decade. It also outlines the future developments of this class of Ti alloys.

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“…During the ARB process, the strain gradient arises through the thickness and leads to microstructure and heterogeneous texture evolution [17]. Therefore, the anisotropy of ARBed sheets and their improved mechanical properties have their own origins in the modified textures, microstructural evolutions, and heterogeneities [17][18][19]. Since the texture of ARBed sample is distinctly different from other rolling process results, it is essential to study texture, the orientation of precipitates, and the mechanical and microstructural properties of the sheets after ARB [20].…”

Section: Introductionmentioning

confidence: 99%

“…Their results showed that the texture of the ARBed samples was almost the same in each ARB cycle, and the difference was only in the texture intensity [16]. Using the tensile test, electron backscatter diffraction (EBSD), and neutron diffraction, Walid Haliba et al [18] studied the texture and microstructure of Mg/Al ARBed composite. They found that refined microstructure and equiaxed grains resulted due to the ARB process.…”

Section: Introductionmentioning

confidence: 99%

Anisotropic Behavior of Al1050 through Accumulative Roll Bonding

et al. 2021

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In this study, Al1050 sheets were fabricated in five passes using the accumulative roll bonding (ARB) technique. For a more accurate and complete investigation, different tests were used, including a uniaxial tensile test. The results show that elongation increases about 50% for the annealed sample, which is 2.5 times that of the fifth pass (20%). A five-fold increase can be seen in tensile strength, which was 50 MPa in the annealed sample and reached 250 MPa at the end of the fifth pass. The annealed sample’s yield stress was 40 MPa, 4.5 times less than 180 MPa after five passes of ARB. Then, to evaluate sample hardness, the Vickers microhardness test was conducted in the samples’ depth direction, which recorded 39 HV for the annealed piece and 68 HV after the last ARB pass. These results show that the hardness increases by 1.8 times after five passes of ARB. In the next step, by conducting fractography tests after the sample fractures during the tensile test, the fracture’s mechanism and type were identified and explained. Finally, X-ray diffraction (XRD) was employed to produce pole figures of sample texture, and the anisotropy phenomena of the annealed sample and ARBed samples were wholly examined. In this study, with the help of pole figures, the anisotropic behavior after ARB was investigated and analyzed. In each step of the process, observing the samples’ texture states and the anisotropy magnificent was possible. According to the results, normal anisotropy of 0.6 in the annealed sample and 1.8 achieved after the fifth pass of ARB indicates that ARB leads to an increase in anisotropy.

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Investigation of microstructure and texture evolution of a Mg/Al laminated composite elaborated by accumulative roll bonding

Cited by 73 publications

References 52 publications

On the evolution of microstructure, texture and corrosion behavior of a hot-rolled and annealed AZ31 alloy

On the evolution of microstructure, texture and corrosion behavior of a hot-rolled and annealed AZ31 alloy

Mechanical properties of near alpha titanium alloys for high-temperature applications - a review

Anisotropic Behavior of Al1050 through Accumulative Roll Bonding

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