| Mean-field statistical simulation of grain coarsening in the presence of stable and unstable pinning particles | |
| G. Wang; D. S. Xu; E. J. Payton; N. Ma; R. Yang; M. J. Mills; Y. Wang | |
| 2011 | |
| 发表期刊 | Acta Materialia
 |
| ISSN | 1359-6454 |
| 卷号 | 59期号:11页码:4587-4594 |
| 摘要 | Grain coarsening in the presence of second-phase particles is investigated using a mean-field statistical model. With any given initial grain size distribution and average size and volume fraction of pinning particles as input, the model predicts grain growth kinetics and temporal evolution of the grain size distribution. Simulations are performed for both stable and unstable particle populations with several different initial grain size distributions. It is shown that the kinetics of grain coarsening is sensitive to the initial grain size distribution and pinning force variation as a function of time. Under a constant pinning force (stable particles), the final mean grain size does not vary significantly with different initial grain size distributions, though the kinetics of grain growth differs. On the other hand, a pinning force that decreases with time (associated with, for example, particle dissolution) could induce temporarily abnormal grain coarsening and a wider initial grain size distribution results in an earlier onset of the abnormal grain coarsening and a smaller final grain size. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
| 部门归属 | [wang, g.; xu, d. s.; yang, r.] chinese acad sci, inst met res, shenyang 110016, peoples r china. [wang, g.; payton, e. j.; ma, n.; mills, m. j.; wang, y.] ohio state univ, dept mat sci & engn, columbus, oh 43210 usa.;xu, ds (reprint author), chinese acad sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china;dsxu@imr.ac.cn wang.363@osu.edu |
| 关键词 | Grain Growth Zener Pinning Time-dependent Drag Force Abnormal Grain Coarsening Computer Modeling Dispersed 2nd-phase Particles Growth Model Size Recrystallization Microstructures Secondary |
| URL | 查看原文 |
| WOS记录号 | WOS:000291567900033 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.imr.ac.cn/handle/321006/30718 |
| 专题 | 中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | G. Wang,D. S. Xu,E. J. Payton,et al. Mean-field statistical simulation of grain coarsening in the presence of stable and unstable pinning particles[J]. Acta Materialia,2011,59(11):4587-4594. |
| APA | G. Wang.,D. S. Xu.,E. J. Payton.,N. Ma.,R. Yang.,...&Y. Wang.(2011).Mean-field statistical simulation of grain coarsening in the presence of stable and unstable pinning particles.Acta Materialia,59(11),4587-4594. |
| MLA | G. Wang,et al."Mean-field statistical simulation of grain coarsening in the presence of stable and unstable pinning particles".Acta Materialia 59.11(2011):4587-4594. |
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