This study employs a phase field (PF) simulation to examine the precipitation of Ag and CuNi phases in an AgCuNi ternary alloy and its relationship with immiscibility. AgCuNi alloys exhibit a unique combination of electrical and thermal conductivity, mechanical strength, and corrosion resistance, making them suitable for various applications. However, immiscibility between Ag and CuNi phases can cause phase separation and distinct precipitation, affecting the material's properties.
Our PF model integrates thermodynamic and kinetic data from ab initio calculations and the CALPHAD database, accounting for factors such as concentration gradients, phase interfaces, and elastic strain energy. The simulation provides spatiotemporal evolution of PFs under different processing conditions, revealing separate Ag and CuNi precipitates.
This work enhances our understanding of phase separation and precipitation processes in AgCuNi ternary alloys, offering insights for developing advanced materials with tailored properties for various applications.