An investigation into the mechanical behavior and microstructural evolution of the accumulative roll bonded AZ31 Mg alloy upon annealing

Roostaei, Ali A.; Zarei-Hanzaki, A.; Abedi, H.R.; Rokni, Masoud

doi:10.1016/j.matdes.2011.01.038

Cited by 58 publications

(20 citation statements)

References 29 publications

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“…For this reason, there have been extensive efforts to obtain grain-refined Mg alloys by applying severe plastic deformation (SPD) techniques, among them the equal channel angular pressing (ECAP) [2][3][4], accumulative roll bonding (ARB) [5] and multi-directional forging (MDF) [6,7] are the representative ones. In ECAP, the accumulation of redundant shear strain and dynamic recrystallization (DRX) refine the microstructure while increasing the material's yield strength but reducing the ductility [4].…”

Section: Introductionmentioning

confidence: 99%

Enhanced stretch formability and mechanical properties of a magnesium alloy processed by cold forging and subsequent annealing

Yang

et al. 2013

Materials & Design

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Section: Introductionmentioning

confidence: 99%

Enhanced stretch formability and mechanical properties of a magnesium alloy processed by cold forging and subsequent annealing

Yang

et al. 2013

Materials & Design

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“…Compared with other ARB processed commercial Mg alloys, such as AZ31, the present Mg-Gd alloy has much better mechanical properties. For example, optimized yield strength and total elongation are 160 MPa and 20% in an AZ31 alloy after 2 cycle ARB processing at 450℃ and annealing at 350℃ [1]. …”

Section: Arb Processing Effect On Mechanical Propertiesmentioning

confidence: 99%

“…As is well known, severe plastic deformation (SPD) techniques, such as equal channel angular extrusion, differential speed rolling, large strain hot rolling and accumulative roll-bonding (ARB), have been proved to be effective to weaken the basal texture or to obtain a modified microstructure in Mg alloys. However, ARB is the most prospective SPD method, which could be adopted by industries as a continuous process to produce large sheets with ultrafine grains [1]. The microstructures and texture of the AZ-series Mg alloys processed by ARB method have been well studied in the past decade [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and mechanical properties of ARB processed Mg-3% Gd alloy

Song

Wang

et al. 2015

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. Mg alloys have various advantages. However, the low formability due to the poor ductility of Mg alloys limits their engineering applications. In this study, an Mg-3%Gd alloys was chosen to explore processing approaches for improving its strength and ductility combination. The alloy was processed by accumulative roll-bonding (ARB) at 400℃ to 4 cycles followed by annealing at various temperatures. The microstructures after annealing were characterized by the electron backscatter diffraction technique and the mechanical properties were measured by a tensile test. It was found that the alloy has a good combination of strength and ductility after 2 cycle ARB processing followed by annealing at 290℃ for 1h. The strength is 2.3 times higher than that of the fully annealed coarse grained alloy, and the elongation is comparable with that of fully annealed coarse grained counterpart. The good mechanical properties were related to the fine-sized heterogeneous microstructures and weakened texture.

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“…However, the application of wrought Mg alloys has been limited by poor room temperature ductility 6,7 . It was ascribed to the large difference in critical resolved shear stresses (CRSS) between basal and prismatic slip in hexagonal close-packed (hcp) crystal structure in Mg alloys [8][9][10][11][12] . This results in a lack of the active slips systems and can hardly offer an arbitrary shape change at the grain level.…”

Section: Introductionmentioning

confidence: 99%

Effect of Multi-Pass Bending Deformation on Microstructure Evolution and Mechanical Properties of AZ31 Alloy Sheet

Yang

Dai

et al. 2016

Mat. Res.

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The rolled AZ31 Mg alloy sheets were processed by multi-pass bending (MPB) process at room temperature and followed by annealing treatment. Mechanical properties of the as-received and MPB sheets in annealed conditions were examined based on the concurrent microstructure and texture evolution. The results show that the room temperature ductility of the Mg sheets was improved by multi-pass bending process. Moreover, the (0002) basal texture was drastically weakened. Enhanced the ambient mechanical properties, such as lower yield strength and larger uniform elongation, were fabricated by MPB path due to the weak basal texture. The microstructure and mechanical responses were characterized and discussed.

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An investigation into the mechanical behavior and microstructural evolution of the accumulative roll bonded AZ31 Mg alloy upon annealing

Cited by 58 publications

References 29 publications

Enhanced stretch formability and mechanical properties of a magnesium alloy processed by cold forging and subsequent annealing

Enhanced stretch formability and mechanical properties of a magnesium alloy processed by cold forging and subsequent annealing

Microstructure and mechanical properties of ARB processed Mg-3% Gd alloy

Effect of Multi-Pass Bending Deformation on Microstructure Evolution and Mechanical Properties of AZ31 Alloy Sheet

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