论文标题

基于ZR的金属眼镜的结构异质性,延展性和玻璃形成能力

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

论文作者

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

论文摘要

我们显示了纳米级结构异质性与基于ZR的金属眼镜(MGS)的机械性能与玻璃形成能力之间的相关性。构成结构异质性的中等范围排序(MRO)的详细参数,包括使用4维扫描透射电子显微镜确定的MRO结构域的类型,大小和体积分数,与ZR-CU-CO-CO-CO-AL MGS的延展性和玻璃形成能力直接相关。中尺度变形模拟纳入了实验确定的MRO,证实MRO的各种类型和大小可以显着影响MGS的机械行为。

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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