Abstract The changes in the atomic structure of Zr–Cu amorphous alloys caused by different cooling rates were studied by X-ray diffraction synchrotron radiation and molecular dynamic calculation. Results show that the content of high-strength Zr–Cu bonds increases, whereas those of Zr–Zr and Cu–Cu bonds decrease as the cooling rate decreases. The increase of high-strength atomic bonds leads to the increase of Young's modulus of Zr-Cu amorphous alloys. The lower cooling rate facilitates the formation of a more efficient atomic packing model, suggesting that more atomic bonds form in the system without increasing the number of atoms. The effect of cooling rate on the atomic structure and Young's modulus of Zr–Cu amorphous alloys with different components is proportional to the content of Zr–Cu bonds in the system as a whole.

中文翻译：

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基于原子键比例的冷却速率引起的Zr-Cu非晶合金组织演化定量分析

摘要 通过X射线衍射同步辐射和分子动力学计算，研究了不同冷却速率对Zr-Cu非晶合金原子结构的影响。结果表明，随着冷却速度的降低，高强度 Zr-Cu 键的含量增加，而 Zr-Zr 和 Cu-Cu 键的含量减少。高强度原子键的增加导致Zr-Cu非晶合金的杨氏模量增加。较低的冷却速率有利于形成更有效的原子堆积模型，这表明在不增加原子数量的情况下，系统中形成了更多的原子键。冷却速度对不同组分Zr-Cu非晶合金原子结构和杨氏模量的影响与整个体系中Zr-Cu键的含量成正比。