Microstructure and Texture Evolution of Mg–Gd–Y–Zn–Zr Alloy by Compression–Torsion Deformation

Xu, Ping; Yu, Jianmin; Zhang, Zhimin

doi:10.3390/ma12172773

Cited by 10 publications

(2 citation statements)

References 29 publications

(46 reference statements)

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“…The sub-crystals in coarse grains can capture moving dislocations, increase the orientation difference, and evolve into high-angle grain boundaries (HAGBs). Then the high-angle grain boundary migrates to eliminate some LAGBs, and finally obtain fine recrystallized grains, a typical continuous DRX feature [35,36]. In addition, there are unique grains around the coarse grains of B1 and C1.…”

Section: Microstructurementioning

confidence: 99%

Microstructure Characteristics and Corrugation Interface Behavior of Al/Mg/Al Composite Plate Rolled Under Large Strain

HUO

Feng

Niu

et al. 2022

Acta Metall. Sin. (Engl. Lett.)

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Traditional rolled (TR) aluminum (Al)/magnesium (Mg)/aluminum (Al) composite plates have many bottlenecks such as multiple passes, low interlaminar strength, and weak mechanical properties. In this paper, the hard-plate rolling (HPR) method was used to prepare Al/Mg/Al composite plates under a single pass reduction of 60%. The results show that the ultimate tensile strength (UTS) of the composite plate obtained by hard-plate rolling is 262.3 MPa, and the percentage of total elongation at fracture (A t ) is 12.3%, which is 31.6% and 37.4% higher than that of the traditional rolling, respectively. It is attributed to the unique corrugated interlocking structure of the interface of the composite plate caused by hard-plate rolling. The shear texture produced by the Mg plate weakens the strong-basal texture. At the same time, the strong basal slip and the large amount of energy stored in the deformed grains provide favorable conditions for dynamic recrystallized (DRX) nucleation. The microstructure is deeply refined by DRX, and the strength and plasticity of the composite plate are improved synchronously. It provides scientific guidance for the development of high-performance lightweight composite plates and the research on hard-plate rolling technology and also has good industrial production and application potential.

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Section: Microstructurementioning

confidence: 99%

Microstructure Characteristics and Corrugation Interface Behavior of Al/Mg/Al Composite Plate Rolled Under Large Strain

HUO

Feng

Niu

et al. 2022

Acta Metall. Sin. (Engl. Lett.)

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“…The formation of the bimodal microstructure and the texture characteristic during the hot rolling can simultaneously influence the tensile properties of the sheets, which should be studied in detail. In addition, not only the intragranular LPSO within the α-Mg matrix, but also the interdendritic LPSO phases formed at grain boundaries due to the abundant addition of RE element [22][23][24]. However, the effect of the interdendritic LPSO phase distribution on the tensile properties of the resulted sheets was scarcely studied.…”

Section: Introductionmentioning

confidence: 99%

Influences of the Texture Characteristic and Interdendritic LPSO Phase Distribution on the Tensile Properties of Mg–Gd–Y–Zn–Zr Sheets Through Hot Rolling

Teng

2021

Acta Metall. Sin. (Engl. Lett.)

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The Mg-Gd-Y-Zn-Zr alloy sheets with different texture characteristics and distribution of the interdendritic long periodstacking ordered (LPSO) phases were fabricated through altering the final rolling reduction (FRR). The results showed that the texture characteristic was closely related to FRR and affected the tensile properties of the resulted sheets to some extent. The Schmid factor (SF) of the basal ⟨a⟩ slip improved with further FRR, which was ascribed to that the dynamic recrystallization (DRX) grains expand into the deformed grains with basal texture. However, the improvement of the tensile yield strength (TYS) with further FRR indicates that the strengthening effect from DRX grains surpasses the weakening effect from the elevated SF. The formation of the line-distributed interdendritic 14H-LPSO phases can also affect the tensile properties of the resulted sheets. The line-distributed interdendritic 14H-LPSO phases along rolling direction (RD) can act as reinforcing fiber and contribute to the higher TYS along RD and 45° to some extent, which resulted in the higher TYS along 45° compared with that along transverse direction (TD) for each resulted sheet under the circumstance of approximate basal ⟨a⟩ and pyramid ⟨c + a⟩ friction stress. Thus, the tensile yield strength is not only related to the texture, but also depends on the grain size and line-distributed interdendritic LPSO phases. The micro-cracks spread perpendicular to the tension direction, and thus, the larger cracks form within the line-distributed 14H-LPSO phases during tension along TD, which accounts for the lower fracture elongation along TD.

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A comparative study on the evolutions of thermal and mechanical parameters and microstructure of 30Si2MnCrMoVE steel during hot ACDR and upsetting deformation

Wang

Liu

Zhang

et al. 2021

Int J Adv Manuf Technol

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Microstructure and Texture Evolution of Mg–Gd–Y–Zn–Zr Alloy by Compression–Torsion Deformation

Cited by 10 publications

References 29 publications

Microstructure Characteristics and Corrugation Interface Behavior of Al/Mg/Al Composite Plate Rolled Under Large Strain

Microstructure Characteristics and Corrugation Interface Behavior of Al/Mg/Al Composite Plate Rolled Under Large Strain

Influences of the Texture Characteristic and Interdendritic LPSO Phase Distribution on the Tensile Properties of Mg–Gd–Y–Zn–Zr Sheets Through Hot Rolling

A comparative study on the evolutions of thermal and mechanical parameters and microstructure of 30Si2MnCrMoVE steel during hot ACDR and upsetting deformation

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