Quantitative Evaluation of Bauschinger Effect in Magnesium Alloys with Asymmetry Effect
Abstract
Features of quantitative evaluation of the Bauschinger effect in magnesium alloys with an asymmetry of deformation behavior regarding tension and compression are considered. It is found that the Bauschinger effect is associated with different contribution of detwinning in total strain in different loading directions. A quantitative evaluation of this effect using stress- and work of deformation approaches renders very close results. The asymmetry of deformation upon tension and compression in magnesium alloys similarly affects both the yield stress and deformation contribution of detwinning in total plastic strain. Parameters of the Bauschinger effect are close to zero when the first loading excursion is in compression, which means this effect is very weak and inelasticity is mostly connected with the twinning process upon tension. The comparison of the Bauschinger effect for commercial ZK60 and promising Mg-based ZE10 (alloyed with rare earths) engineering alloys univocally points to better properties ofthe latter.
About the Authors
D. L. Merson
Тольяттинский государственный университет
Russian Federation
Russian Federation
E. V. Vasil’Ev
Тольяттинский государственный университет
Russian Federation
Russian Federation
A. Yu. Vinogradov
Тольяттинский государственный университет; Норвежский университет естественных и технических наук
Russian Federation
Russian Federation
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Review
For citations:
Merson D.L., Vasil’Ev E.V., Vinogradov A.Yu. Quantitative Evaluation of Bauschinger Effect in Magnesium Alloys with Asymmetry Effect. Industrial laboratory. Diagnostics of materials. 2017;83(3):55-58. (In Russ.)
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