A rationale for the influence of grain size on failure of magnesium alloy AZ31: An in situ X-ray microtomography study

Azghandi, S.H. Mohamadi; Weiß, Matthias; Arhatari, Benedicta D.; Adrien, Jérôme; Maire, Éric; Barnett, Matthew

doi:10.1016/j.actamat.2020.09.016

Cited by 36 publications

(1 citation statement)

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“…Zhang et al [11] observed that the activation of twinning was suppressed when the fine-grain magnesium alloy undergoes plastic deformation. Azghandi et al [12] reported the effect of grain size on the tensile properties of AZ31 magnesium alloy. Their results showed that the tensile failure strain of the fine-grain samples increased as compared to the large grain samples.…”

Section: Introductionmentioning

confidence: 99%

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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Section: Introductionmentioning

confidence: 99%