Abstract In this study, a new CuZrAl ternary bulk metallic glass (BMG) with glass forming ability (GFA) of 10 mm in diameter was fabricated. The GFA of the BMG was discussed based on the suppression of the competing crystal phase and the efficient dense packing of the constituting atoms. Compression testing showed that the CuZrAl ternary BMG has good true plastic deformation of 11.7%, whereas its adjacent composition has a plastic deformation of 16.1%. Mapping by energy-dispersive X-ray spectroscopy in scanning transmission mode revealed that chemical heterogeneity exists in the CuZrAl BMGs. Chemical heterogeneity revealed to be a possible reason for the observed mechanical behavior of the CuZrAl ternary BMGs.

中文翻译：

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具有良好塑性和化学异质性的厘米级 CuZrAl 块状金属玻璃

摘要 在这项研究中，制备了一种直径为 10 mm 的具有玻璃形成能力 (GFA) 的新型 CuZrAl 三元块状金属玻璃 (BMG)。基于竞争晶相的抑制和构成原子的有效密集堆积讨论了 BMG 的 GFA。压缩测试表明，CuZrAl 三元 BMG 具有 11.7% 的良好真实塑性变形，而其相邻成分的塑性变形为 16.1%。通过扫描透射模式下的能量色散 X 射线光谱进行映射显示，CuZrAl BMG 中存在化学异质性。化学异质性是观察到的 CuZrAl 三元 BMG 机械行为的可能原因。