Microstructural evolution in ZrCu metallic glass under neutron irradiation
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Date
2020-12
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier
Abstract
A detailed numerical investigation has been conducted on the microstructural evolution of a Zr2Cu metallic glass (MG) model under neutron irradiation by extensive molecular dynamics simulations. It was discovered that at the melted zone of the irradiated MG model, an irradiation-induced cascades region was prominent, where there exists a significant atomic-to-cluster structural changes in terms of the coordination numbers, atomic packing efficiency, cluster distribution and regularity. These features effectively were responsible for the transformation of disordered local structures from a densely-packed to a loosely-packed arrangement and largely, the underlying chaos within the structure. Eventually, it was highly remarkable to discover that when the model was fully relaxed at 20 ns, the irradiation-induced structural changes completely vanished and the entire structure was effectively and fully self-recovered. The results of this study will potentially facilitate the development of advanced materials with high irradiation resistance.
Description
Volume 188, 15 February 2021, 110183
Keywords
STEM, Obafemi Awolowo University, Liang Yang, neutron irradiation, metallic glass, microstructural evolution, irradiation-induced
Citation
Dong, Y. F., Li, M. F., Malomo, B., & Yang, L. (2021). Microstructural evolution in ZrCu metallic glass under neutron irradiation. Computational Materials Science, 188, 110183.