Relating activation of brittle-to-ductile transition to β relaxation in Cu46Zr44Al7Y3 metallic glass
Source abstract
Abstract
Abstract A series of compression tests were performed on the Cu46Zr44Al7Y3 metallic glass (MG) at different strain rates and a wide temperature range in which the β relaxation can be observed. A distinct boundary that can be used to describe the brittle-to-ductile transition (BDT) of the MG in compression was summarized. Furthermore, it was found that both the BDT and the β relaxation are in accordance with the Arrhenius relations, by which two energies with similar values reflecting the apparent activation energies of the BDT and the β relaxation are determined, respectively. Therefore, the BDT and the β relaxation are co-related. In addition, the origin of BDT was discussed in terms of the intrinsic correlation among the potential shear transition zones, the β relaxation, and the inhomogeneous atomic structure in MGs.
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Research context
OpenAlex topics: Metallic Glasses and Amorphous Alloys · Glass properties and applications · Material Dynamics and Properties
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