About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Mesoscale Phenomena in Functional Polycrystals and Nanostructures
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| Presentation Title |
A Phase Field Analysis of Temperature-Dependent Grain Growth in Polycrystalline Alloys Embedded with Secondary Particles |
| Author(s) |
M Nabil Bhuiyan, Lesley D. Frame, Serge M. Nakhmanson |
| On-Site Speaker (Planned) |
M Nabil Bhuiyan |
| Abstract Scope |
The control of grain size distribution during heat treatment has implications on alloy strength, toughness, and fatigue performance. Using simulation tools for microstructure prediction and heat treatment recipe development can save time and costs associated with experiment and process development. Prior research has established grain growth models for FCC copper with inert secondary particles under isothermal conditions. In this study, phase-field simulations are employed to determine grain growth behavior in pure metals with a Body-Centered Cubic (BCC) and Face-Centered Cubic (FCC) structure. Simplified isothermal models with anisotropic grain boundary mobility have been modified to incorporate grain growth under a time-dependent temperature profile (e.g., heating and cooling) to simulate realistic thermal processing conditions. Target metal systems are considered both with and without secondary particles’ grain boundary pinning. Isothermal simulation results are validated against published experimental data, and initial simulation results provide guidance for future experimental validation of the time-dependent temperature model. |