期刊論文
| 學年 | 100 |
|---|---|
| 學期 | 1 |
| 出版（發表）日期 | 2011-12-01 |
| 作品名稱 | Nanometer Scale Mechanical Behavior of Grain Boundaries |
| 作品名稱（其他語言） | |
| 著者 | Wang, C. K., Chew, H. B., Kim, K. S. |
| 單位 | |
| 出版者 | |
| 著錄名稱、卷期、頁數 | MRS Online Proceedings Library Archive 1297, pp.1-9 |
| 摘要 | A nonlinear field projection method has been developed to study nanometer scale mechanical properties of grain boundaries in nanocrystalline FCC metals. The nonlinear field projection is based on the principle of virtual work, for virtual variations of atomic positions in equilibrium through nonlocal interatomic interactions such as EAM potential interaction, to get field-projected subatomic-resolution traction distributions on various grain boundaries. The analyses show that the field projected traction produces periodic concentrated compression sites on the grain boundary, which act as crack trapping or dislocation nucleation sites. The field projection was also used to assess the nanometer scale failure processes of Cu Σ5 grain boundaries doped with Pb. It was revealed that the Pb dopants prevented the emission of dislocations by grain boundary slip and embrittles the grain boundary. |
| 關鍵字 | fracture;grain boundaries;embrittlement |
| 語言 | en_US |
| ISSN | |
| 期刊性質 | 國外 |
| 收錄於 | EI |
| 產學合作 | |
| 通訊作者 | Kim, K.-S. |
| 審稿制度 | 否 |
| 國別 | USA |
| 公開徵稿 | |
| 出版型式 | ,電子版 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/104660 ) |