Topics on microstructure researches in TiAl intermetallics using atomic scale observation and computational simulation
文献类型：期刊论文
| 作者 | L. L. He ; L. G. Zhou ; R. Yu ; L. Dong ; H. Q. Ye |
| 刊名 | International Journal of Materials & Product Technology
 |
| 出版日期 | 2001 |
| 页码 | 13-22 |
| 关键词 | TiAl intermetallics asymmetry large angle tilting GB Ti2Al phase HREM MS calculation ab initio pseudopotential calculation ti2al phase alloys al |
| ISSN号 | 0268-1900 |
| 中文摘要 | TiAl-based alloys have received much attention in recent years since they are primary candidates for high-temperature structure material. In this paper, characterization of atomic structures of TiAl grain boundaries (GBs) and identification of a Ti2Al phase were performed on the atomic scale in combination of experimental observation and computational simulation. Using high-resolution electron microscope (HREM) observation and MS calculation, the atomic structure of an asymmetry large angle tilting GB has been characterized, which was named as a pseudo Sigma 3 (1 (5) over bar(1) over bar) [101] / / (1 (1) over bar1) [110] GB. Based on HREM observation, nano-beam EELS and EDS analysis and ab initio pseudopotential calculation for the cohesive energy of compound, the Ti2Al phase was identified. Its unit cell has the stacking sequences (Al,3Ti)-(Al,3Ti)-(Al,3Ti)-(Al,Ti)-(Al,3Ti)-(Al,Ti) with ABCBB'CB' order, which is different from the reported model. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/36667]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | L. L. He,L. G. Zhou,R. Yu,et al. Topics on microstructure researches in TiAl intermetallics using atomic scale observation and computational simulation[J]. International Journal of Materials & Product Technology,2001:13-22. |
| APA | L. L. He,L. G. Zhou,R. Yu,L. Dong,&H. Q. Ye.(2001).Topics on microstructure researches in TiAl intermetallics using atomic scale observation and computational simulation.International Journal of Materials & Product Technology,13-22. |
| MLA | L. L. He,et al."Topics on microstructure researches in TiAl intermetallics using atomic scale observation and computational simulation".International Journal of Materials & Product Technology (2001):13-22. |
入库方式： OAI收割
来源：金属研究所
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