论文标题
非晶态Ni50ti50合金，具有纳米多孔结构，由超级同型冷却产生
Amorphous Ni50Ti50 Alloy with Nanoporous Structure Generated by Ultrafast Isobaric Cooling
论文作者
论文摘要
由于其机械和能量吸收特性的独特组合，因此非晶的金属泡沫是前瞻性材料。在目前的工作中，原子动力学模拟是在等速器条件下进行的，压力$ p = 1.0 $ atm，以研究如何以极高的速度（$ 5 \ times10^{13} $ - $ 5 \ $ 5 \ times10^{14} $ k/s）会影响不使用滴虫钛镍镍的毛孔的形成。对于平衡液相，确定了$ρ（t）$的蒸发温度$ t_ {b} $和状态方程。发现这种无定形固体的孔隙率不取决于以如此高的速度冷却，而孔形态取决于冷却速率的大小。在研究具有纳米多孔结构的无定形金属泡沫的机械性能时，获得的结果将需要。
Amorphous metallic foams are prospective materials due to unique combination of their mechanical and energy-absorption properties. In the present work, atomistic dynamics simulations are performed under isobaric conditions with the pressure $p = 1.0$ atm in order to study how cooling with extremely high rates ($5\times10^{13}$--$5\times10^{14}$ K/s) affects the formation of pores in amorphous titanium nickelide. For equilibrium liquid phase, vaporization temperature $T_{b}$ and the equation of states in the form of $ρ(T)$ are determined. It is found that the porosity of this amorphous solid does not depend on cooling at such high rates, whereas the pore morphology depends on the magnitude of the cooling rate. The obtained results will be in demand in study of mechanical properties of amorphous metallic foams with a nanoporous structure.
