|
|||||
|
|
Pinning of grain boundary migration by a coherent particle |
|
| Authors: | Nan Wang Youhai Wen Long-Qing Chen |
| Affiliation: | 1. Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA 16802, USAnxw13@psu.edu;3. National Energy Technology Laboratory, Albany, OR 97321, USA;4. Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA 16802, USA |
| Abstract: | We studied single-particle pinning of grain boundary (GB) migration during grain growth. A phase-field model was formulated to simulate the pinning by a coherent particle and validated quantitatively by comparison with analytical prediction. A study of GB migration velocity using this model revealed that second-phase coherent particles have a previously unknown restraining effect over the whole of the GB-particle interaction range, which is qualitatively different from the interaction between GB and incoherent particles. |
| Keywords: | grain boundary pinning coherent precipitate phase-field grain growth |