Anisotropic Properties of Magnesium Sheet AZ31

Kaiser, F.; Letzig, Dietmar; Bohlen, Jan; Styczynski, A.; Hartig, Ch.; Kainer, Karl Ulrich

doi:10.4028/www.scientific.net/msf.419-422.315

Cited by 83 publications

(43 citation statements)

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“…Otherwise, high temperature in the flange results in the flange part drawing with lower drawing force. 4,5) This re-affirms that control of temperature distribution in the wall and the flange plays a Figure 7 shows the comparison of the numerical predicted and experimental results of AZ31 and AZ52 at forming temperature of 498 K for DR of 2.8, respectively. Both experimental and numerical strain distribution show the same basic feature.…”

Section: Temperature Distributionmentioning

confidence: 71%

“…However, deep drawing tests with magnesium alloy sheets show that the drawability of sheets can be improved by local heating based on the change of material property with respect to temperatures. [4][5][6] This means the process is ultimately non-isothermal. Moreover, during the forming process, heat is generated by plastic deformation and the heat loss by conduction and by radiation and convection to the punch as well as to the environment can result in several property changes of the workpiece.…”

Section: Introductionmentioning

confidence: 99%

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Experimentally and Numerical Study on Deep Drawing Process for Magnesium Alloy Sheet at Elevated Temperatures

et al. 2008

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Recently, magnesium alloys have been considered as a promising alternative for high-strength steel and aluminum in some applications because of its advantages such as low density, high specific strength etc. However, the application of formed magnesium wrought alloys components is restricted due to lack of knowledge for processing magnesium alloys at elevated temperatures. In this study, the deformation behavior of a cylindrical deep drawing of magnesium alloy sheets at elevated temperatures are simulated by using a non-isothermal finite element based on DEFORM 3D commercial software. In order to validate the finite element analysis, deep drawing test of cylindrical cup of AZ31 and AZ52 rolled sheets at given conditions was also performed. The experimental results show a good agreement with the finite element simulation predictions. The optimal forming temperature, thickness distribution of the cup and punch force were determined for the process.

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Section: Temperature Distributionmentioning

confidence: 71%

Section: Introductionmentioning

confidence: 99%

Experimentally and Numerical Study on Deep Drawing Process for Magnesium Alloy Sheet at Elevated Temperatures

et al. 2008

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“…High-temperature deformation mechanisms, such as creep in coarse-grained magnesium and its alloys, have been extensively studied over the years, and detailed reviews can be found in [2,4,18,24]. These studies reveal clearly that higher temperature creep loading leads to reduction in the load-bearing capacity of coarse-grained Mg-alloys.…”

Section: Introductionmentioning

confidence: 99%

“…Among structural materials, Magnesium (Mg) has the highest strength-to-weight ratio. Moreover, Mg-alloys have excellent recyclability and are ideal for transportation applications providing enormous potential for energy savings [1][2][3][4][5][6][7]. However, magnesium has certain limitations when compared with other metallic systems and polymers [6].…”

Section: Introductionmentioning

confidence: 99%

Atomic-scale investigation of creep behavior in nanocrystalline Mg and Mg–Y alloys

2015

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Magnesium (Mg) and its alloys offer great potential for reducing vehicular mass and energy consumption due to their inherently low densities. Historically, widespread applicability has been limited by low strength properties compared to other structural Al-, Ti-and Fe-based alloys. However, recent studies have demonstrated high-specific-strength in a number of nanocrystalline Mg-alloys. Even so, applications of these alloys would be restricted to low-temperature automotive components due to microstructural instability under high temperature creep loading. Hence, this work aims to gain a better understanding of creep and associated deformation behavior of columnar nanocrystalline Mg and Mg-yttrium (Y) (up to 3at.%Y(10wt.%Y)) with a grain size of 5 nm and 10 nm. Using molecular dynamics (MD) simulations, nanocrystalline magnesium with and without local concentrations of yttrium is subjected to constant-stress loading ranging from 0 to 500 MPa at different initial temperatures ranging from 473 to 723 K. In pure Mg, the analyses of the diffusion coefficient and energy barrier reveal that at lower temperatures (i.e., T < ~423K) the contribution of grain boundary diffusion to the overall creep deformation is stronger that the contribution of lattice diffusion. However, at higher temperatures (T > ~423K) lattice diffusion dominates the overall creep behavior. Interestingly, for the first time, we have shown that the(101 ̅ 1), (101 ̅ 2),(101 ̅ 3) and (101 ̅ 6) boundary sliding energy is reduced with the addition of yttrium. This softening effect in the presence of yttrium suggests that the experimentally observed high temperature beneficial effects of yttrium addition is likely to be attributed to some combination of other reported creep strengthening mechanisms or phenomena such as formation of stable yttrium oxides at grain boundaries or increased forest dislocation-based hardening.

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“…The anisotropic behaviour of the as-rolled AZ31 magnesium alloy sheets is mainly the result of texture. Kaiser et al [10] studied the relationship between anisotropic properties of AZ31 magnesium alloy sheets and indicated that the distribution of the {0002} basal plane has a significant influence on the anisotropy of the sheet.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Microstructure and texture evolution in multi-pass warm rolled AZ31 magnesium alloy

Liu

2015

MATEC Web of Conferences

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Abstract. Electron Backscatter Diffraction (EBSD) is employed to characterize the microstructure and texture established during the process of warm rolled AZ31 magnesium alloy sheets. The grain size was refined from 17.4 m to 3.8 m after 4 pass rolling. Texture of as-rolled sheets was expressed by (0002) basal texture, and the texture intensity was increased with the rolling pass increasing. The mechanical properties of as-rolled sheets were greatly improved by warm rolling.

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Anisotropic Properties of Magnesium Sheet AZ31

Cited by 83 publications

References 0 publications

Experimentally and Numerical Study on Deep Drawing Process for Magnesium Alloy Sheet at Elevated Temperatures

Experimentally and Numerical Study on Deep Drawing Process for Magnesium Alloy Sheet at Elevated Temperatures

Atomic-scale investigation of creep behavior in nanocrystalline Mg and Mg–Y alloys

Microstructure and texture evolution in multi-pass warm rolled AZ31 magnesium alloy

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