Author:
Chen Tzu-Chia,Nasution Mahyuddin KM,Jabbar Abdullah Hasan,Shoja Sarah Jawad,Siswanto Waluyo Adi,Pranoto Sigiet Haryo,Bokov Dmitry,Magizov Rustem,Mustafa Yasser Fakri,Surendar A.,Zalilov Rustem,Sviderskiy Alexandr,Vorobeva Alla,Vorobyev Dmitry,Alkhayyat Ahmed
Abstract
Understanding the relation between spatial heterogeneity and structural rejuvenation is one of the hottest topics in the field of metallic glasses (MGs). In this work, molecular dynamics (MD) simulation is implemented to discover the effects of initial spatial heterogeneity on the level of rejuvenation in the Ni80P20MGs. For this purpose, the samples are prepared with cooling rates of 1010 K/s–1012 K/s to make glassy alloys with different atomic configurations. Firstly, it is found that the increase in the cooling rate leads the Gaussian-type shear modulus distribution to widen, indicating the aggregations in both elastically soft and hard regions. After the primary evaluations, the elastostatic loading is also used to transform structural rejuvenation into the atomic configurations. The results indicate that the sample with intermediate structural heterogeneity prepared with 1011 K/s exhibits the maximum structural rejuvenation which is due to the fact that the atomic configuration in an intermediate structure contains more potential sites for generating the maximum atomic rearrangement and loosely packed regions under an external excitation. The features of atomic rearrangement and structural changes under the rejuvenation process are discussed in detail.
Subject
General Physics and Astronomy
Cited by
1 articles.
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1. An investigation on plastic deformation and nanomechanical properties of Cu60Zr40/ Ni80P20 amorphous nanolaminates;Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering;2023-01-24