Rejuvenation of a naturally aged bulk metallic glass by elastostatic loading

Rejuvenation of a naturally aged bulk metallic glass by elastostatic loading

Rejuvenation of a naturally aged Zr64.13Cu15.75Ni10.12Al10 bulk metallic glass (BMG) can be achieved by laterally elastostatic pre-loading. The serration flow of the rejuvenated BMG shows a bimodal fashion, in which smaller serrations and larger serrations emerge alternately. Both coarse and a large...

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Veröffentlicht in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2021-03, Vol.806, p.140843, Article 140843
Hauptverfasser: Zhang, Sailong, Shi, Bo, Wang, Jinhui, Xu, Yuanli, Jin, Peipeng
Format: Artikel
Sprache:eng
Schlagworte:
Ageing
Amorphous materials
Banded structure
Bulk metallic glasses
Edge dislocations
Elastostatic loading
Elastostatics
Heterogeneous structure
Metallic glasses
Rejuvenation
Shear bands
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Zusammenfassung:Rejuvenation of a naturally aged Zr64.13Cu15.75Ni10.12Al10 bulk metallic glass (BMG) can be achieved by laterally elastostatic pre-loading. The serration flow of the rejuvenated BMG shows a bimodal fashion, in which smaller serrations and larger serrations emerge alternately. Both coarse and a large number of fine shear bands, with strong interactions among themselves, coexist in the rejuvenated BMG. More pronounced β relaxation of the rejuvenated BMG indicates that the bimodal patterns of serration flows and shear bands can be attributed to elastostatically induced a more heterogeneous structure.
ISSN:0921-5093
1873-4936
DOI:10.1016/j.msea.2021.140843