Mechanism of Imprinting Process in the Ni-P Metallic Glass Films: A Molecular Dynamics Study

In this study, the molecular dynamics (MD) simulation was used to evaluate the role of imprinting temperature and the mold-cavity geometry on the imprinted Ni-P metallic glass (MG) films. Considering the outcomes of simulation, it was found that the tip-like and groove patterns showed different fill...

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Bibliographic Details
Published in:Advances in materials science and engineering 2023, Vol.2023, p.1-8
Main Authors: Besar Riyadi, Tri Widodo, Sivaraman, Ramaswamy, Hussein Wais, Alaa Mohammed, Altalbawy, Farag M. A., Khudanov, Ulugbek Oybutaevich, Chaudhary, Dinesh Kumar
Format: Article
Language:English
Subjects:
Alloys
Amorphous materials
Deformation
Elastic recovery
Grooves
High temperature
Mechanical properties
Metallic glasses
Molds
Molecular dynamics
Plastic deformation
Room temperature
Shear strain
Simulation
Strain concentration
Temperature
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Summary:In this study, the molecular dynamics (MD) simulation was used to evaluate the role of imprinting temperature and the mold-cavity geometry on the imprinted Ni-P metallic glass (MG) films. Considering the outcomes of simulation, it was found that the tip-like and groove patterns showed different filling time for the imprinting process. At room temperature (300 K), the plastic deformation in the tip-like pattern was in a ring shape enclosing the mold, while the plastic deformation in the groove-pattern geometry was mainly localized at the wall of mold. Moreover, it was determined that the imprinting at high temperature (700 K) led to the shortening of pattern filling time and the decrease of loading force in both geometries. The strain concentration and localized plastic deformation were also removed in the high-temperature imprinting process. On the other hand, the unloading process at room temperature (300 K) improved the imprinting quality due to the lower elastic recovery.
ISSN:1687-8434
1687-8442
DOI:10.1155/2023/6232579