The role of the Mg17Al12-phase in the high-pressure die-cast magnesium-aluminum alloy system

Weiler, J.P.

doi:10.1016/j.jma.2023.08.011

Cited by 5 publications

(1 citation statement)

References 32 publications

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“…Due to its short processing cycle and assembly cost, cast magnesium alloys have significant economic advantages in the mass production of automotive parts [6][7][8][9][10][11]. The most widely used cast magnesium alloy in automobiles is die-cast magnesium alloy [12][13][14]. Currently, the large-scale application of die-cast magnesium alloy in automobiles mainly focuses on the steering wheel skeleton, car seat skeleton, and large display bracket of automobiles [15], which is not widely used.…”

Section: Introductionmentioning

confidence: 99%

Study on Plastic Constitutive Relation and Ductile Fracture Criterion of AM60B Magnesium Alloy

Yang,

Jiang,

Gao

et al. 2024

Materials

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It is currently a challenge to accurately predict the deformation and fracture behavior of metal parts in automobile crashes. Many studies have shown that the deformation and fracture behavior of materials are significantly affected by the stress state during automobile crashes with complex stress state characteristics. In order to further promote the application of die-cast magnesium alloys in automobiles, it is particularly important to study the material deformation and fracture behavior of die-cast magnesium alloys. In this paper, the mechanical properties of the AM60B die-cast magnesium alloy sheet under four stress states (shear, tension, R10 notch tension, and cupping) were designed and tested. Based on the von Mises isotropic constitutive model and Swift weighted Hockett–Sherby hardening model, the plastic constitutive model of die-cast magnesium alloy was established. Based on the plastic model and the fracture model (JC, MMC, and DIEM) considering the influence of three stress states, the deformation and fracture behavior of the AM60B die-cast magnesium alloy front-end members in three-point bending were predicted by experiments and finite element simulation. The experimental results show that the deformation mode and loading–displacement curve trend of the AM60B die-cast magnesium alloy front members are the same, the crack initiation point and crack initiation time are the same, and the crack shape is similar. The results show that the complex stress state constitutive model parameters and the DIEM fracture model obtained in this paper can accurately predict the deformation and fracture failure behavior of the AM60B die-cast magnesium alloy sheet.

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