Journal of Advanced Materials and Technologies

Journal of Advanced Materials and Technologies

Modeling and molecular dynamics simulation of mechanical properties of Al-TiC nanocomposites

Document Type : Original Reaearch Article

Authors
1 M.Sc. in Materials Engineering, Department of Materials Science and Engineering, Shiraz University of Technology, Shiraz, Iran.
2 Assistant Professor, Department of Materials Science and Engineering, Shiraz University of Technology, Shiraz, Iran.
10.30501/jamt.2026.563480.1349
Abstract
Al-TiC nanocomposites have been the subject of extensive materials research due to their unique mechanical properties and low weight. The purpose of this research was to examine the impact of different weight fractions of TiC on the mechanical properties of aluminum, such as hardness and tensile properties. For modeling, molecular dynamics simulations were used as a precise approach to investigate pure aluminum and Al-TiC nanocomposites containing 0, 1, 2, 3, 4, and 5 wt% TiC. The simulated density values revealed a linear increase from 2.70 to 2.84 g/cm³ with increasing TiC content up to 5 wt%. Tensile property analysis showed that Young's modulus and ultimate tensile strength increased by 32% and 54%, respectively. Two predictive models were developed for tensile strength and Young's modulus. Nanoindentation simulations displayed a remarkable 257% improvement in hardness, from 35 to 125 HV. The developed hardness regression model exhibited high accuracy. Micro-mechanism analysis indicated that three main strengthening factors were effective load transfer, dislocation pinning, and residual stresses. Comparative validation with experimental data showed excellent correlation. This work provides valuable guidelines for designing optimized Al-TiC nanocomposites through highly accurate predictive models. The findings suggest that a TiC content of 3-4 wt% is the optimal composition for balancing mechanical properties and density.
Keywords
Subjects

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Volume 14, Issue 4
Winter 2026
Pages 72-89

  • Receive Date 02 December 2025
  • Revise Date 04 January 2026
  • Accept Date 06 June 2026