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Gradient substructure and enhanced strength-ductility synergy obtained in a Mg alloy through cyclic torsion
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DOI：10.1016/j.ijplas.2026.104793.png)
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Abstract
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• Gradient substructure in Mg alloy achieved via cyclic torsion. • Yield strength increased by 100 MPa without obvious ductility loss. • Gradient structure arises from heterogeneity coupling of defects and orientations. • Defect heterogeneity activates strong hetero-deformation-induced strengthening. • Strain accommodation enhanced by dislocation-twin coupled mechanisms.
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