資料載入中.....
|
請使用永久網址來引用或連結此文件:
https://ir.lib.ncu.edu.tw/handle/987654321/105138
|
| 題名: | Kinetic origin of grain boundary migration, grain coalescence, and defect reduction in the crystallization of quenched two-dimensional Yukawa liquids |
| 作者: | 伊林;Chen, Meng-Chun;Yang, Chi;I, Lin |
| 貢獻者: | 理學院物理學系 |
| 日期: | 2014-11-05 |
| 上傳時間: | 2026-04-23 12:08:06 (UTC+8) |
| 出版者: | American Physical Society;United States |
| 摘要: | 摘要： The kinetic origin of grain boundary migration, grain coalescence, and defect reduction in the crystallization of quenched two-dimensional Yukawa liquids are numerically investigated. It is found that, in grain coalescence, stick-slip cracking the region in front of the grain boundary into smaller subgrains corotating with small angle, followed by healing, is the key for aligning lattice misorientation and inducing grain boundary stick-slip advance. Cracking is initiated from the weakly interlocked dislocation along its Burgers vector, which in turn causes dislocation motion along the crack. The cascaded scattering and recombination of two dislocations with 60^{∘} and 120^{∘} Burgers vector angle difference into two and one dislocations are the major processes for dislocation motion and reduction, respectively, in grain boundary migration. A rough grain boundary with large curvature easily supports the above process and induces high grain boundary mobility. Along a straight smooth grain boundary, the parallel Burgers vectors of the string of dislocations hinder defect reduction and induce coalescence stagnation.
其他題名： Phys Rev E Stat Nonlin Soft Matter Phys
出版者： United States
出版日期： 2014-11
出處： Physical review. E, Statistical, nonlinear, and soft matter physics, 2014-11, Vol.90 (5), p.050401, Article 050401
識別號： ISSN: 1539-3755
識別號： ISSN: 1550-2376
識別號： EISSN: 1550-2376
識別號： DOI: 10.1103/PhysRevE.90.050401
識別號： PMID: 25493723 |
| 顯示於類別: | [物理學系] 期刊論文
|
文件中的檔案:
| 檔案 |
描述 |
大小 | 格式 | 瀏覽次數 |
|---|
| index.html | | 0Kb | HTML | 11 | 檢視/開啟 |
|
在NCUIR中所有的資料項目都受到原著作權保護.
|
