Constitutive response of a rare-earth magnesium alloy sheet in monotonic and cyclic loadings
Abstract eng: Experimental tests under different proportional loading conditions were performed to investigate the constitutive behaviour of a rareearth magnesium alloy (ZEK100) rolled sheet at room temperature, under quasi-static conditions. An anisotropic yield function for HCP materials with yield asymmetry, CPB06, was calibrated from monotonic experimental data. To evaluate the performance of the yield criterion, nonproportional experiments were performed with an emphasis on the cyclic shear test. It was observed that although slip and twinning mechanisms govern the response of the magnesium alloy under proportional loadings, reversed loadings can activate the de-twinning mechanism as well leading to a substantial Bauschinger effect.
Publisher:
International Union of Theoretical and Applied Mechanics, 2016
Conference Title:
Conference Title:
24th International Congress of Theoretical and Applied Mechanics
Conference Venue:
Montreal (CA)
Conference Dates:
2016-08-21 / 2016-08-26
Rights:
Text je chráněný podle autorského zákona č. 121/2000 Sb.
Record appears in:
Record created 2016-11-15, last modified 2016-11-15
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