The strain rate sensitive and anisotropic behavior of rare-earth magnesium alloy ZEK100 sheet

Wang, H.; Sun, Xiaochuan; Kurukuri, S.; Worswick, Michael J.; Li, D.Y.; Peng, Yinghong; Wu, Peidong

doi:10.1016/j.jma.2021.06.010

Cited by 19 publications

(4 citation statements)

References 47 publications

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“…The mechanical properties of the AM60B die-cast magnesium alloy at strain rates of 1 s −1 , 10 s −1 , 200 s −1 , 500 s −1 , and 1000 s −1 were tested by high-speed tensile testing machine, and the results are shown in Figure 1b. It can be seen from the figure that the yield stress of the AM60B die-cast magnesium alloy increases with the increase of strain rate, indicating that its mechanical properties are sensitive to strain rate [45][46][47][48][49].…”

Section: Basic Mechanical Properties Testmentioning

confidence: 96%

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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Section: Basic Mechanical Properties Testmentioning

confidence: 96%

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

Yang,

Jiang,

Gao

et al. 2024

Materials

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“…Recently, Shi et al [ 137 ] reviewed the physics-based mesoscale modelling for the anisotropy of magnesium alloys. The mechanical responses of magnesium alloy sheets under different loading conditions, e.g., strain path changes [ 209 , 210 , 211 , 212 ], various strain rates [ 213 , 214 , 215 ] and elevated temperatures [ 216 , 217 ], were investigated by using CP models.…”

Section: Constitutive Modelling Of Lightweight Alloysmentioning

confidence: 99%

A Review of Characterization and Modelling Approaches for Sheet Metal Forming of Lightweight Metallic Materials

Hou

Myung

Park³

et al. 2023

Materials

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Lightweight sheet metals are attractive for aerospace and automotive applications due to their exceptional properties, such as low density and high strength. Sheet metal forming (SMF) is a key technology to manufacturing lightweight thin-walled complex-shaped components. With the development of SMF, numerical simulation and theoretical modelling are promoted to enhance the performance of new SMF technologies. Thus, it is extraordinarily valuable to present a comprehensive review of historical development in SMF followed by state-of-the-art advanced characterization and modelling approaches for lightweight metallic materials. First, the importance of lightweight materials and their relationship with SMF followed by the historical development of SMF are reviewed. Then, the progress of advanced finite element technologies for simulating metal forming with lightweight alloys is covered. The constitutive modelling of lightweight alloys with an explanation of state-of-the-art advanced characterization to identify the constitutive parameters are presented. Then, the formability of sheet metals with major influencing factors, the techniques for measuring surface strains in SMF and the experimental and modelling approaches for determining the formability limits are clarified. Finally, the review is concluded by affording discussion of the present and future trends which may be used in SMF for lightweight metallic materials.

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“…The REM-doped Mg-based alloys exhibit distinct behaviors compared to conventional alloys, particularly in terms of anisotropy and strain rate sensitivity [9]. Unlike traditional rolled AZ31 Mg alloys, which possess a strong texture [10], ZEK100 Mg alloy sheets display a weak texture [10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Coexistence of Intermetallic Complexions and Bulk Particles in Grain Boundaries in the ZEK100 Alloy

Straumal

Tsoy

Дружинин

et al. 2023

Metals

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Magnesium-based alloys are highly sought after in the industry due to their lightweight and reliable strength. However, the hexagonal crystal structure of magnesium results in the mechanical properties’ anisotropy. This anisotropy is effectively addressed by alloying magnesium with elements like zirconium, zinc, and rare earth metals (REM). The addition of these elements promotes rapid seed formation, yielding small grains with a uniform orientation distribution, thereby reducing anisotropy. Despite these benefits, the formation of intermetallic phases (IP) containing Zn, Zr, and REM within the microstructure can be a concern. Some of these IP phases can be exceedingly hard and brittle, thus weakening the material by providing easy pathways for crack propagation along grain boundaries (GBs). This issue becomes particularly significant if intermetallic phases form continuous layers along the entire GB between two neighboring GB triple junctions, a phenomenon known as complete GB wetting. To mitigate the risks associated with complete GB wetting and prevent the weakening of the alloy’s structure, understanding the potential occurrence of a GB wetting phase transition and how to control continuous GB layers of IP phases becomes crucial. In the investigation of a commercial magnesium alloy, ZEK100, the GB wetting phase transition (i.e., between complete and partial GB wetting) was successfully studied and confirmed. Notably, complete GB wetting was observed at temperatures near the liquidus point of the alloy. However, at lower temperatures, a coexistence of a nano-scaled precipitate film and bulk particles with nonzero contact angles within the same GB was observed. This insight into the wetting transition characteristics holds potential to expand the range of applications for the present alloy in the industry. By understanding and controlling GB wetting phenomena, the alloy’s mechanical properties and structural integrity can be enhanced, paving the way for its wider utilization in various industrial applications.

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The strain rate sensitive and anisotropic behavior of rare-earth magnesium alloy ZEK100 sheet

Cited by 19 publications

References 47 publications

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

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

A Review of Characterization and Modelling Approaches for Sheet Metal Forming of Lightweight Metallic Materials

Coexistence of Intermetallic Complexions and Bulk Particles in Grain Boundaries in the ZEK100 Alloy

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