67 Haryadi, Rudianto, Yamin. Molecular Dynamics… https://doi.org/10.35760/tr.2020.v25i1.2490 MOLECULAR DYNAMICS STUDIES ON THE STRENGTH PREDICTION OF INTERFACE BETWEEN AL-AL 4 C 3 IN METAL MATRIX NANOCOMPOSITES 1 Deni Haryadi, 2 Haris Rudianto 3 Mohamad Yamin 1,2,3 Advanced Materials Laboratory, Department of Mechanical Engineering, Gunadarma Univertity Jl. Margonda Raya Number. 100, Depok 16424, West Java 1 deniharyadi97@gmail.com, 2 harisrudianto@staff.gunadarma.ac.id Abstrak In this study, molecular dynamics simulations (MD) will be applied to modelling the Al4C3-aluminum interface in aluminum nanocomposite, Al4C3 is an interface that results from the shaker mill process which becomes a bridge that plays an important role in Carbon particles with Aluminium Matrix and Based on observations from the TEM characterization, it is found that the relationship between Al orientation to Al 4C3 is (111) (002) (220). The characteristics of the interface between Aluminum matrix and Al 4C3 will be analyzed using uniaxial tension and shear test simulation. The atomic potential used in this simulation is the embedded atomic method (EAM) for Al, empirical-order intermolecular potential (AIREBO) for C and lennard jones for the reaction of Al-C atom. The result shows that, the interface orientation is Al matrix (002) || Al4C3 (003) has the highest interface strength compared to Al matrix (111) || Al4C3 (003) and Al matrix (200) Interface orientation || Al 4C3 (003). Results from the molecular dynamics simulations are also discussed with analytical results obtained experimental Keywords: Molecular dynamics, Interface, Aluminum Nanocomposite INTRODUCTION Aluminum matrix nanocomposite is a composite material that combines strength, stiffness and low weight properties with the potential to increase damage tolerance while maintaining certain thermal and electrical properties [1-2]. on Auminum matrix composite Carbon reinforcement form Interphase Al4C3. Al4C3 is an interface produced by the shaker mill process which becomes a bridge that plays an important role in Carbon particles with an aluminum matrix [3]. Based on observations of TEM characterization, it was found that the relationship between the orientation of Al to Al4C3 was (111) (002) (220) and Plane (002) was coherent [4]. There are major challenges in the experimental development and characterization of the Al 4 C3-aluminum inter- face in aluminium nanocomposite due to the difficult and expensive processes involved [5-6]. Therefore, discussing with the computation method which has the advantages of time and low cost will play an important role in analyzing and understand- ing the characteristics of aluminum-Al4C3 in aluminum nano composite materials. [7] Molecular Dynamics (MD) simulation method is widely used by researchers around the world who are mostly researchers in the field of chemistry and nano metal composites, because the MD method can be used to determine movements, directions and brought to you by CORE View metadata, citation and similar papers at core.ac.uk provided by Gunadarma University: Ejournal UG