Texture dependencies on flow stress behavior of magnesium alloy under dynamic compressive loading

Nazeer, Faisal; Naqvi, Syed Zohaib Hassan; Kalam, Abul; Al‐Sehemi, Abdullah G.; Alrobei, Hussein

doi:10.1016/j.vacuum.2021.110323

Cited by 15 publications

(6 citation statements)

References 23 publications

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“…high specific stiffness, low density and so on [1][2][3][4][5]. The growing interest in energy conservation and emission reduction improves the utilisation of these lightweight alloys and then continues raising the requirements in understanding their mechanical properties [6][7][8][9]. Many reports studied the compression [8], tension [7,10,11], pre-deformation [1,12,13] and impact mechanical responses [8,14] of such materials.…”

mentioning

confidence: 99%

“…The growing interest in energy conservation and emission reduction improves the utilisation of these lightweight alloys and then continues raising the requirements in understanding their mechanical properties [6][7][8][9]. Many reports studied the compression [8], tension [7,10,11], pre-deformation [1,12,13] and impact mechanical responses [8,14] of such materials. These contributions help a lot on constructing the constitutive model of Mg alloy which helpful to provide accurate predictions on stress-strain and forcedisplacement responses [7,15,16].…”

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confidence: 99%

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Deformation responses of AZ31B magnesium alloy under combined shear-compression loading

Lin

Shao

et al. 2023

Materials Science and Technology

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Combined shear-compression tests were conducted to AZ31B magnesium alloy through shear-compression specimen (SCS) and the deformation response process is captured by digital image correlation technology. The mechanical behaviours and deformation characteristics of SCS with different loading angles are analysed in detailed. Results show that the strain path of SCS is sensitive to the loading angle. The deformation behaviour at initial stage exhibits proportional loading and related to the tangent loading angle which reveals the designability of SCS for mechanical testing with specific requirements.

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confidence: 99%

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confidence: 99%

Deformation responses of AZ31B magnesium alloy under combined shear-compression loading

Lin

Shao

et al. 2023

Materials Science and Technology

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“…When closely observed, the curve of the 5 μm sample shows a convex, whereas the 1.5 μm sample shows a typical sigmoidal (concaved upward). The previous studies have reported that the sigmoidal curves were an indication of the massive activation of {10–12} tension twinning, while the convex curves showed the predominant dislocation slip [26-31]. In Figure 4(d), the difference between the two true stress–strain curves reflected by their strain hardening curves is shown.…”

Section: Resultsmentioning

confidence: 83%

Dynamic compression behaviour and constitutive description of fine-grain Mg–4Zn–1Y alloy

Liu

Mao

et al. 2022

Materials Science and Technology

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In this research, the dynamic compression behaviour of 5 and 1.5 µm grain size samples of Mg–4Zn–1Y alloy was investigated by the split Hopkinson pressure bar at the strain rate of 1000–1700 s−1. The microstructure, texture evolution, and the deformation mechanisms of samples were characterised by electron backscattering diffraction. The result showed that the grain refinement caused tension twining, which resulted in the distinct true stress–strain curves with specific grain sizes. It was found that the pyramidal < c + a > and pyramidal <a > slips were the main deformation mechanisms of 5 and 1.5 µm samples under dynamic compression, respectively. The constitutive modelling of Mg–4Zn–1Y with different grain sizes was also developed by introducing the grain size adjustment parameters.

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“…It has been found that the main deformation mechanism of magnesium alloys is twinning and slip bonding under compression at room temperature and high strain rate. 15, 20, 30, 31 A wide range of grain reorientation leads to the nucleation of tensile twins and the change of texture with the increase of strain rate. Due to the activation of multiple twins, the twin lamella leads to grain refinement and significantly improves the yield strength.…”

Section: Resultsmentioning

confidence: 99%

“…However, the adiabatic effect and strong shock wave under high-speed impact load will lead to the obvious difference between high strain rate deformation mechanism and static compression deformation mechanism. [12][13][14][15][16][17] Studies on the dynamic response of AZ31, AZ61 and ZK60 magnesium alloys to high strain rate deformation at room temperature show that the tensile strength of the alloys increases with increasing strain rate. The yield strength and strain hardening rate have a strong dependence on the strain rate.…”

Section: Introductionmentioning

confidence: 99%

Effect of low temperature and high strain rate compression on the microstructure evolution and mechanical behavior of Mg-2Y-0.6Nd-0.6Zr alloy

Luo

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part L:

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Mg-2Y-0.6Nd-0.6Zr alloy was implemented for compression test via split Hopkinson pressure bar under the conditions of low temperature and a high strain rate. The microstructure evolution and deformation mechanism of the processed material were characterized by optical microscopy (OM), electron backscatter diffraction (EBSD) and scanning electron microscopy (SEM) during the testing of low-temperature dynamic compression. As a result, Mg-2Y-0.6Nd-0.6Zr alloy exhibited a positive strain rate strengthening processed by low-temperature dynamic compression along the RD. In addition, the dynamic compressive strength and yield strength are significantly enhanced with the increasing strain rate, following the emerging of tension twins and a small amount of compression twins. The primary deformation mechanisms are the prismatic <a > slip system and {10[Formula: see text]2} tension twins. The Mg-2Y-0.6Nd-0.6Zr was fractured in a brittle manner at low temperature.

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Texture dependencies on flow stress behavior of magnesium alloy under dynamic compressive loading

Cited by 15 publications

References 23 publications

Deformation responses of AZ31B magnesium alloy under combined shear-compression loading

Deformation responses of AZ31B magnesium alloy under combined shear-compression loading

Dynamic compression behaviour and constitutive description of fine-grain Mg–4Zn–1Y alloy

Effect of low temperature and high strain rate compression on the microstructure evolution and mechanical behavior of Mg-2Y-0.6Nd-0.6Zr alloy

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