Unveiling the deformation mechanism of highly deformable magnesium alloy with heterogeneous grains

Zhang, Zhi; Zhang, Jinghuai; Wang, Wenke; Liu, Shujuan; Sun, Baode; Xie, Jinshu; xiao, Tingxu

doi:10.1016/j.scriptamat.2022.114963

Cited by 55 publications

(2 citation statements)

References 33 publications

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“…Similarly, Zhao et al and Mayama et al found that the profuse prismatic <a> dislocation activations would suppress twinning formation by rotating grains to preferred orientations for further deformation, resulting in improved ductility [36,37]. In our recent work, a considerable proportion of prismatic <a> dislocations was activated during the tension deformation of AZ31 magnesium alloys, which was closely related to their higher tensile elongation [38]. The resulting sheet possessed a finer grain size less than 10 µm, which was conducive the activation of nonbasal slips.…”

Section: Mechanical Propertiessupporting

confidence: 66%

Evolution of the Microstructure and Mechanical Properties of AZ31 Magnesium Alloy Sheets during Multi-Pass Lowered-Temperature Rolling

Miao

Zhu

Wang

et al. 2022

Metals

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AZ31 magnesium alloy sheets with 2 mm thickness were successfully fabricated by multi-pass lowered-temperature rolling. The evolution of the microstructure, texture, and mechanical properties during the rolling process was investigated. Based on the effect of multiple dynamic recrystallization, multi-pass lowered-temperature rolling not only refined the grain size obviously but also markedly improved the microstructure homogeneity. The resulting sheets had the optimal microstructure morphology with an average grain size of 4.38 μm. For the texture evolution, the stress state of the rolling process made the (0002) basal plane gradually rotate toward the rolling plane. However, the activation of non-basal slips due to the higher rolling temperature slightly rotated the (0002) basal plane point to the rolling direction (RD). As a result, the grain refinement strengthening and the texture strengthening together increased the yield stress to 202 MPa in the transverse direction (TD) and 189.8 MPa in the RD. Importantly, the resulting sheet concurrently exhibited excellent fracture elongation, about 38% in the TD and 39.2% in the RD. This was mainly ascribed to the finer grain size, giving rise to a significant effect of grain boundary sliding and the activation amount of non-basal slips.

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Section: Mechanical Propertiessupporting

confidence: 66%

Evolution of the Microstructure and Mechanical Properties of AZ31 Magnesium Alloy Sheets during Multi-Pass Lowered-Temperature Rolling

Miao

Zhu

Wang

et al. 2022

Metals

Self Cite

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“…Magnesium alloy has been widely used in 5G electronic communication, aerospace and transportation due to its advantages of low density, high specific strength and good damping and shock absorption. 1 Although magnesium alloys have many advantages, they are not corrosion resistant and have poor plastic workability at room temperature, 2,3 which limits the application of magnesium alloys. Compared with spraying on the surface of magnesium alloy for protective treatment, covering its surface with a thin layer of aluminium alloy with good corrosion resistance to form Mg/Al composite plate, a new material with the advantages of magnesium alloy and aluminium alloy can be obtained, which can prolong the service life of the material, and does not produce any pollution in the production and later recovery process, which is in line with the current green and low-carbon development concept.…”

Section: Introductionmentioning

confidence: 99%

Effect of annealing on microstructure and mechanical properties of Mg/Al clad plate

Li,

Zhu,

Liu

2024

Materials Science and Technology

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Mg/Al clad plate was prepared by a combined process of corrugated roll rolling, flat roll rolling and annealing. The results show that the grain refinement is obvious in the first corrugated roll rolling, the grain grows before the second pass annealing, and the grain refines again after the second pass flat roll. By increasing the annealing temperature, the grain growth is promoted, the hardness of Mg17Al12 compound layer is 1.378–2.812 GPa, and that of Al3Mg2 compound layer is 1.161–1.281 GPa, which is higher than that of base metal. The mechanical properties of clad plate in transverse direction (TD) are better than those in rolling direction (RD). The residual stress can be eliminated by annealing, and the mechanical properties of clad plate can be improved.

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The influence of SiC–Al2O3 reinforcements on the deformation and fracture mechanism of thixomolded Mg-based composite

Gu,

Shang,

Wang

et al. 2024

J Mater Sci

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Unveiling the deformation mechanism of highly deformable magnesium alloy with heterogeneous grains

Cited by 55 publications

References 33 publications

Evolution of the Microstructure and Mechanical Properties of AZ31 Magnesium Alloy Sheets during Multi-Pass Lowered-Temperature Rolling

Evolution of the Microstructure and Mechanical Properties of AZ31 Magnesium Alloy Sheets during Multi-Pass Lowered-Temperature Rolling

Effect of annealing on microstructure and mechanical properties of Mg/Al clad plate

The influence of SiC–Al2O3 reinforcements on the deformation and fracture mechanism of thixomolded Mg-based composite

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