Phase-Field Simulation of Spinodal Decomposition in Mn-Cu Alloys

The spinodal decomposition was studied in the aged Mn-40 at. %Cu, Mn-30 Mn-20 %Cu alloys using a phase-field model based on Cahn–Hillard equation, considering subregular solution and energy contribution of magnetic behavior. simulations were performed at aging temperatures 300, 400, 500 °C for times from 1 to 240 min. growth kinetics Mn concentration profiles with time indicated clearly that phase supersaturated solid ? into mixture Mn-rich ?? Cu-rich phases occurred by mechanism. Moreover, early stages exhibited characteristic morphology decomposition, an interconnected percolated microstructure decomposed phases. most rapid 30 because higher driving force. presence is responsible increase hardness, as well improvement damping capacity Mn-Cu alloys.