Structural Features and Related Properties of Amorphous Alloys with High Defect Densities/ Interfaces Densities

我们建议研究具有高缺陷密度的非晶态合金的结构特征、力学性能和一些物理性能。由惰性气体冷凝(IGC)和溅射产生的纳米玻璃的非凡特性已经被揭示出来。然而，IGC和溅射制备的样品尺寸相对较小，这阻碍了它们的工业应用。另一方面，最近的研究表明，严重的塑性变形(SPD)处理可能导致非晶态材料的原子结构发生显着变化，这与出现缺陷的短程有序和过剩的自由体积有关。这些变化似乎取决于SPD工艺参数(温度、应变度和应变率、施加的压力)。然而，非晶态合金在SPD作用下的结构转变和相关性质的特性还没有得到深入的研究。在非晶态合金中，SPD过程中形成的缺陷结构的特征可能类似于也可能不同于由IGC和溅射产生的纳米玻璃。对IGC和溅射以及SPD产生的具有高密度微结构缺陷的非晶材料的平行研究开辟了新的机会来影响非晶材料的微结构参数，从而影响其物理、机械和化学性质。在这个项目中，基本参数(弹性模数、自由体积等)将首次使用最先进的分析技术，对IGC和溅射以及SPD生产的一些非晶态合金进行全面研究。在此基础上，改变机械(强度和延性)和物理、化学(磁、电、腐蚀性等)的可能性。我们将展示非晶态合金的性质。由于先进非晶合金在工程和医学中的实际应用范围扩大，这些任务具有明显的创新潜力。德国和俄罗斯团队在这个项目中合作研究的必要性和效率得到了将互补的实验能力相结合的协同效应的证明，最重要的是，两个团队的互补能力。

We propose to study the structural features as well as mechanical properties and some of the physical properties of amorphous alloys with high density of defects. Extraordinary properties of nanoglasses, produced by inert gas condensation (IGC) and sputtering, have been already revealed. However, the dimensions of specimens produced by IGC and sputtering, are relatively small, which prevents their industrial application. On the other hand recent studies have shown that severe plastic deformation (SPD) processing may lead to significant changes in the atomic structure of amorphous materials related to the appearance of a defective short-range order and an excess free volume. These changes seem to depend on the SPD processing parameters (temperature, strain degree and strain rate, imposed pressure). However, peculiarities of structural transformations and related properties of amorphous alloys, subjected to SPD have not been thoroughly studied. Features of the defect structure formed during SPD in amorphous alloys may be either similar to or different from nanoglasses, produced by IGC and sputtering. Parallel studies of amorphous materials with a high density of microstructural defects produced by IGC and sputtering and by SPD open up new opportunities to influence the microstructural parameters of amorphous materials and, therefore, their physical, mechanical and chemical properties. In this project, the fundamental parameters (elastic modulus, free volume, etc.) of a number of amorphous alloys, produced by IGC and sputtering on the one hand and by SPD on the other hand will be studied comprehensively for the first time using state-of-the-art analytic techniques. On this basis, the possibility for varying the mechanical (strength and ductility) and physical, chemical (magnetic, electrical, corrosive, etc.) properties of amorphous alloys will be demonstrated. These tasks have an obvious innovation potential, due to an expansion of the practical application of advanced amorphous alloys in engineering and medicine. The necessity for and the efficiency of the collaborative research in this project of the German and Russian teams are justified by the synergic effects of combining complementary experimental capabilities and, most importantly, the complementary competencies of the two teams.