Thermally Activated Slip in Rare Earth Containing Mg–Mn–Ce Alloy, ME10, Compared with Traditional Mg–Al–Zn Alloy, AZ31
The thermally activated deformation of textured Mg alloys is evaluated using repeated stress relaxation tests analyzed with the assistance of elasto-viscoplastic self-consistent (EVPSC) polycrystal modeling. The data, presented in a Haasen plot, suggests that the superposition of at least two mechanisms controls the thermally activated glide of dislocations in both a rare-earth containing alloy, ME10, and the conventional alloy, AZ31: forest dislocation interactions and a mechanism with a lower activation volume (solute–dislocation interaction and/or cross-slip).
KeywordsStrain rate sensitivity Activation volume Haasen plot Stress relaxation Solute
The authors wish to thank the US National Science Foundation, Division of Materials Research, Metals and Metallic Nanostructures (NSF-DMR-MMN) program, Grant Number: 1810197, overseen by program manager Dr. Lynnette Madsen for their financial support.
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