Modeling of Isothermal Dissolution of Precipitates in a 6061 Aluminum Alloy Sheet during Solution Heat Treatment

During the solution heat treatment (SHT) process of aluminum alloys, precipitates dissolve into matrix. To predict dissolution time, modeling isothermal in 6061 alloy during SHT was conducted. A precipitate model established, and flowchart designed as well. Then explicit finite-difference method employed to solve model, mobile nodes used deal with moving interface. The simulation based on real 6061, experiments were conducted validate numerical model. results showed that time 6061-T6 at 560 °C is 11.6856 s. close experimental results, an error 16.7%, indicating this study fairly reasonable accurate. caused by many factors, should be improved.