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| Creep deformation related to gamma ' phase cutting at high temperature of a [111] oriented nickel-base single crystal superalloy | |
| Li, Yifei; Wang, Li; Zhang, Gong; Zheng, Wei; Qi, Dongqing; Du, Kui; Zhang, Jian; Lou, Langhong | |
| 2019-08-19 | |
| Source Publication | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
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| ISSN | 0921-5093 |
| Volume | 763 |
| Abstract | The configurations of superdislocations in a [111]-oriented nickel-base single crystal superalloy have been investigated after creep deformation at 1100 degrees C/150 MPa. The superdislocation arrays and hexagonal super dislocation networks are formed in irregular rafted gamma' phase, which are rarely observed in [001] crept specimens. It is believed that the superdislocation networks are formed by reactions of superdislocation arrays and another kind of superdislocations. Careful diffraction contrast analysis shows that the Burgers vector of the super-dislocation arrays is a [01 (1) over bar], which is not the favorable slip system when loaded along [111]. The formation of the arrays is supposed to be related to the matrix dislocations cross slipping in two {001} channels and the stress concentration caused by inhomogeneous rafted structures. The networks in gamma' phase may prevent dislocation movement and slash the increase of creep rate to some extent. |
| Keyword | Superalloy Creep Superdislocation Rafted structure [111] orientation |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000483456900036 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/80825 |
| Collection | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | Li, Yifei,Wang, Li,Zhang, Gong,et al. Creep deformation related to gamma ' phase cutting at high temperature of a [111] oriented nickel-base single crystal superalloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2019,763. |
| APA | Li, Yifei.,Wang, Li.,Zhang, Gong.,Zheng, Wei.,Qi, Dongqing.,...&Lou, Langhong.(2019).Creep deformation related to gamma ' phase cutting at high temperature of a [111] oriented nickel-base single crystal superalloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,763. |
| MLA | Li, Yifei,et al."Creep deformation related to gamma ' phase cutting at high temperature of a [111] oriented nickel-base single crystal superalloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 763(2019). |
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