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Influence of the Type of Deformation and Texture on the Damageability and Mechanical Properties of ZE10 Magnesium Alloy

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We study the effects of extrusion treatment with subsequent rolling in combination with annealing, changes in the direction of rolling after each pass (original sheet), and alternating bending (AB) for 0.5; 1; 3, and 5 cycles, as well as the effect of texture on the parameter of damage D and the elastic and mechanical properties of the material in uniaxial tensile tests (ultimate strength σu, yield point σ0.2, and relative elongation Δl/l) for the ZE10 magnesium alloy with zinc, zirconium, and rare-earth metals. We determined the values of damage parameters according to the changes in the modulus of elasticity after the corresponding number of AB cycles relative to its values in different directions for the original analyzed sheet. Note that the damage parameters were computed by using the models of equivalent strains and equivalent elastic energy. It is established that the elasticity moduli, ultimate strengths, conventional yield points, and relative elongations averaged over all directions in the sheets of the alloy, decrease and, on the contrary, the corresponding values of damage parameters increase with the number of AB cycles and obey parabolic laws, as follows from the correlation and regression analyses. The anisotropy of indicated characteristics also weakens under the conditions of alternating bending. It was also shown that there exist strong correlation relations between the Kearns texture parameters, on the one hand, and the moduli of elasticity, damage parameters, ultimate strengths, yield points, and relative elongation, on the other hand. We deduce the corresponding quadratic regression equations with high values of the reliability index of approximation. It was also shown that the indicated changes in the analyzed properties are mainly caused by the variations of crystallographic textures.

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Correspondence to V. V. Usov.

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Translated from Fizyko-Khimichna Mekhanika Materialiv, Vol. 56, No. 6, pp. 65–75, November–December, 2020.

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Usov, V.V., Shkatulyak, N.М., Savchuk, O.S. et al. Influence of the Type of Deformation and Texture on the Damageability and Mechanical Properties of ZE10 Magnesium Alloy. Mater Sci 56, 795–806 (2021). https://doi.org/10.1007/s11003-021-00497-3

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  • DOI: https://doi.org/10.1007/s11003-021-00497-3

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