Abstract To explore the application potential of bulk metallic glasses (BMGs) as energetic structural materials (ESMs) and address the limitations in the preparation of large-sized monolithic BMGs, the effect of the in-situ crystalline phases on the mechanical properties and energy release behaviors of Zr55Ni5Al10Cu30 BMGs are evaluated. The results indicate that while the content of in-situ crystalline phases in Zr55Ni5Al10Cu30 alloy are effectively tailored by controlling the cooling rate of molten alloys, the mechanical properties and energy release behaviors of Zr55Ni5Al10Cu30 are determined by the content of in-situ crystalline phases. The alloy prepared using the highest cooling rate possesses the lowest crystalline phase content as well as the highest strength and deformability. By contrast, the complete crystalline alloy prepared by annealing exhibits the highest energy release characteristics under high-speed impact owing to the highest degree of brittleness and most oxidation reaction. The Zr55Ni5Al10Cu30 alloy with different crystalline phase content shows potential as an ESM. Its mechanical properties and energetic characteristics can be effectively tailored by controlling the content of in-situ crystalline phases via cooling rate modulation.

中文翻译：

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原位晶相对Zr55Ni5Al10Cu30块状金属玻璃力学性能和能量释放行为的影响

摘要 探索大块金属玻璃 (BMGs) 作为含能结构材料 (ESMs) 的应用潜力，并解决制备大尺寸整体 BMGs 的局限性，原位晶相对机械性能和能量释放的影响。评估了 Zr55Ni5Al10Cu30 BMG 的行为。结果表明，虽然Zr55Ni5Al10Cu30合金中原位晶相的含量可以通过控制熔融合金的冷却速度来有效调整，但Zr55Ni5Al10Cu30合金的力学性能和能量释放行为是由原位晶相的含量决定的。使用最高冷却速率制备的合金具有最低的晶相含量以及最高的强度和变形能力。相比之下，退火制备的全晶合金由于脆性最高，氧化反应最多，因此在高速冲击下表现出最高的能量释放特性。具有不同晶相含量的 Zr55Ni5Al10Cu30 合金显示出作为 ESM 的潜力。通过调节冷却速率来控制原位晶相的含量，可以有效地调整其机械性能和能量特性。