|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Phase Transformations and Microstructural Evolution
||Study of Phase Precipitation in Binary Systems using Diffusion Multiples and Simulations
||Qiaofu Zhang, Ji-Cheng Zhao
|On-Site Speaker (Planned)
Based upon the Classical Nucleation and Growth Theory (CNGT) and the Kampmann-Wagner Numerical (KWN) model, a MatLab program was developed to simulate the second phase precipitation process in binary systems. Precipitation information from simulation - such as the particle radius and precipitate density - can be compared with experimental results. Dual-anneal diffusion multiples were utilized to generate second phase precipitates in different binary systems at various temperatures across different compositions. The diffusion multiples were characterized by TEM to obtain the precipitation information. By adjusting the interfacial energy to match the simulated and experimental results, the interfacial energy between matrix and particles can be determined. Systems investigated in this study include Ni-Al, Cu-Ti and Co-Ti.
||Planned: A print-only volume