Abstract Alloy melts can solidify into metallic glasses if cooled fast enough to avoid crystallization. Glass-forming ability (GFA), a measure of the ease of vitrification, is vital for the fundamental understanding of glass formation, and is also crucial for the application of metallic glasses. Previous studies of GFA mainly focused on the undercooled liquid phase, while the influence of the evolution of the stable melts on GFA is rarely addressed. Here we show that the Pd42.5Ni42.5P15 glass-forming liquid, in which a first-order liquid-liquid transition (LLT) takes place at TLL = 1063 K high above its liquidus temperature, shows significantly different GFA when quenched from the temperature above or below TLL. Moreover, the pathway and kinetics of crystallization of the melt are strongly related to the kinetics of the LLT. Our work provides new insights into the vitrification process and the kinetics of crystallization, and contributes to designing more stable metallic glasses.

中文翻译：

---

Pd42.5Ni42.5P15合金中与液-液转变相关的玻璃形成能力

摘要 如果冷却得足够快以避免结晶，合金熔体可以凝固成金属玻璃。玻璃形成能力 (GFA) 是衡量玻璃化难易程度的一个指标，对于玻璃形成的基本理解至关重要，对于金属玻璃的应用也至关重要。先前对 GFA 的研究主要集中在过冷液相，而很少涉及稳定熔体的演变对 GFA 的影响。在这里，我们展示了 Pd42.5Ni42.5P15 玻璃形成液体，其中一级液 - 液转变 (LLT) 在高于其液相线温度的 TLL = 1063 K 处发生，当从该温度淬火时显示出显着不同的 GFA高于或低于 TLL。此外，熔体结晶的途径和动力学与 LLT 的动力学密切相关。