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arXiv · 2002.09347

Structural Heterogeneity, Ductility, and Glass Forming Ability of Zr-Based Metallic Glasses

Soohyun Im·Pengyang Zhao·Geun Hee Yoo·Zhen Chen·Gabriel Calderon·Mehrdad Abbasi Gharacheh·Olivia Licata·Baishakhi Mazumder·David A. Muller·Eun Soo Park·Yunzhi Wang·Jinwoo Hwang
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Abstract

We show the correlation between nanoscale structural heterogeneity and mechanical property and glass forming ability of Zr-based metallic glasses (MGs). Detailed parameters of medium range ordering (MRO) that constitutes the structural heterogeneity, including the type, size, and volume fraction of MRO domains determined using 4-dimensional scanning transmission electron microscopy, directly correlate with the ductility and glass forming ability of Zr-Cu-Co-Al MGs. Mesoscale deformation simulation incorporating the experimentally determined MRO confirms that the diverse types and sizes of MRO can significantly influence the MGs' mechanical behavior.

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Soohyun Im, Pengyang Zhao, Geun Hee Yoo, Zhen Chen, Gabriel Calderon, Mehrdad Abbasi Gharacheh, Olivia Licata, Baishakhi Mazumder, David A. Muller, Eun Soo Park, Yunzhi Wang, Jinwoo Hwang. 2020-02-21. Structural Heterogeneity, Ductility, and Glass Forming Ability of Zr-Based Metallic Glasses. https://arxiv.org/abs/2002.09347

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