Abstract
Deformation map provides a comprehensive understanding on various deformation mechanisms governed at different conditions. In this work, for the first time we observed a significant mean stress effect on the deformation map of a typical metallic glass (MG), i.e., the tensile mean stress could largely promote the deformation mode transition from shear localization to homogeneous deformation while the compressive one may suppress that. The present results emphasize the important role of stress state in the high-temperature deformation of MGs, implying that the thermoplastic forming of MGs could be better controlled via adjusting the local stress state.
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