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
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.