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

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Materials science Ductility (Earth science) Amorphous metal Volume fraction Deformation (meteorology) Nanoscopic scale Composite material Transmission electron microscopy Nanotechnology Alloy Creep

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 ·

YOU? · · 2020 · Open Access · · DOI: https://doi.org/10.48550/arxiv.2002.09347 · OA: W3008368508

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.