Numerical study of the effective thermal conductivity of 2-phase magnesium alloys containing solid solution atoms using lattice Monte-Carlo

Abstract

The assessment of thermal conductivity in alloy plays a crucial role in ensuring their stability and performance in thermal applications. This paper specifically focuses on simulating the thermal conductivity of complex microstructures, which involve solid solution atoms and second phases. The lattice Monte Carlo (LMC) method is employed to examine the effective thermal conductivity of the Mg-(Ce, La) model alloy. The results obtained from numerical simulation are compared to experimental data, demonstrating a good agreement between them. Additionally, the study establishes a correlation between the content of solid solution atoms and thermal resistance through rj,α = A/(1-2x). Furthermore, the impact of various factors, such as volume fraction (fβ), size (Z), and morphology (F‾) of the second phase on the effective thermal conductivity, is thoroughly investigated and summarized. Overall, this research contributes to a better understanding the thermal conductivity behavior in complex alloy microstructures.