Abstract A series of Zr–Ti–Y–Al–Cu–Ni–Co–Fe complex multi-component bulk metallic glasses (CMBMGs) were designed using multi-substitution strategy in Zr55Cu35Al10, Zr60Cu30Al10 and Zr60Cu28Al12 BMGs, and their crystallization and corrosion behaviors were systematically investigated. It is found that, CMBMGs have higher complexity in crystallization compared to their ternary counterparts, and well-dispersed nano-crystals with diameters of 5–30 nm could be easily formed in CMBMGs in a wide range of annealing temperature, reflecting sluggish crystallization kinetics. Moreover, these CMBMGs exhibit considerable higher corrosion resistance than their ternary counterparts. Besides, both the glass transition temperature (Tg) and onset crystallization temperature (Tx) decrease compared to their ternary counterparts. In addition, it is interesting that the crystallization behavior and corrosion resistance of these Zr–Ti–Y–Al–Cu–Ni–Co–Fe CMBMGs are mainly influenced by the elements substituted in Zr–Cu–Al alloys, which provides a novel route for compositional optimization of CMBMGs. This work is beneficial to better understand the phase formation and properties of BMGs with complex compositions.

中文翻译：

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Zr-Ti-Y-Al-Cu-Ni-Co-Fe复合多组分块状金属玻璃的结晶和耐蚀性

摘要 采用多取代策略在 Zr55Cu35Al10、Zr60Cu30Al10 和 Zr60Cu28Al12 BMGs 中设计了一系列 Zr-Ti-Y-Al-Cu-Ni-Co-Fe 复合多组分块状金属玻璃 (CMBMGs) 及其结晶和腐蚀行为。进行了系统的调查。研究发现，CMBMGs 与三元对应物相比具有更高的结晶复杂性，并且在很宽的退火温度范围内，CMBMGs 中可以容易地形成直径为 5-30 nm 的分散良好的纳米晶体，反映了缓慢的结晶动力学。此外，这些 CMBMG 表现出比三元对应物更高的耐腐蚀性。此外，与其三元对应物相比，玻璃化转变温度 (Tg) 和起始结晶温度 (Tx) 均降低。此外，有趣的是，这些 Zr-Ti-Y-Al-Cu-Ni-Co-Fe CMBMGs 的结晶行为和耐腐蚀性主要受 Zr-Cu-Al 合金中取代元素的影响，这为组成成分提供了一种新途径。 CMBMG 的优化。这项工作有利于更好地了解具有复杂成分的 BMGs 的相形成和性质。