| Atomistic simulation of fracture in Ni3Al | |
| Xie, Hong-Xian ; Wang, Chong-Yu ; Yu, Tao | |
| 2010-05-06 ; 2010-05-06 | |
| 关键词 | DISLOCATION NUCLEATION SINGLE-CRYSTALS FAULT ENERGIES GAMMA'-PHASE ALPHA-IRON CRACK DYNAMICS BEHAVIOR ALLOYS SUPERDISLOCATIONS Materials Science, Multidisciplinary |
| 中文摘要 | The molecular dynamics method has been used to simulate mode I cracking in Ni3Al. Close attention has been paid to the process of atomic configuration evolution of the cracks. The simulation results show that at low temperature, the Shockley partial dislocations are emitted before the initiation of the crack propagation, subsequently forming the pseudo-twins on (11 (1) over bar) planes in crack-tip zone, and then the crack cleavage occurs. The emitting of the Shockley partial dislocations accompanies the crack cleavage during the simulation process. At the higher temperature, the blunting at the crack tip is caused by the [110] superdislocations emitted on (100) plane. The present work also shows that the dipole dislocations on (11 (1) over bar) planes in the 1/2[110] dislocation core can be formed. |
| 语种 | 英语 ; 英语 |
| 出版者 | MATERIALS RESEARCH SOC ; WARRENDALE ; 506 KEYSTONE DR, WARRENDALE, PA 15086 USA |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/14340]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | Xie, Hong-Xian,Wang, Chong-Yu,Yu, Tao. Atomistic simulation of fracture in Ni3Al[J],2010, 2010. |
| APA | Xie, Hong-Xian,Wang, Chong-Yu,&Yu, Tao.(2010).Atomistic simulation of fracture in Ni3Al.. |
| MLA | Xie, Hong-Xian,et al."Atomistic simulation of fracture in Ni3Al".(2010). |
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