Study on the Creep Behavior of a Ni3Al-Based Single Crystal Alloy at 850°C/450 MPa
The creep behaviors of Ni3Al-based single crystal alloy IC6SX with [001] and [111] orientations under the condition of 850°C/450 MPa were investigated. The effect of crystal orientation on the creep lives, fracture morphology, fracture mechanism, and dislocation evolution of the alloys with differen...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/2020/8818136 |
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| _version_ | 1832554537519415296 |
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| author | Liwu Jiang Yu Yang Meiling Wu Min Cai |
| author_facet | Liwu Jiang Yu Yang Meiling Wu Min Cai |
| author_sort | Liwu Jiang |
| collection | DOAJ |
| description | The creep behaviors of Ni3Al-based single crystal alloy IC6SX with [001] and [111] orientations under the condition of 850°C/450 MPa were investigated. The effect of crystal orientation on the creep lives, fracture morphology, fracture mechanism, and dislocation evolution of the alloys with different orientations was analyzed systematically. The results showed that the creep lives of the alloy were closely related to the crystal orientation under the condition of 850°C/450 MPa. The creep lives of the single crystal alloys with [001] and [111] orientations were 56.3 h and 126.9 h, respectively. Moreover, the fracture morphologies of the two alloys with [001] and [111] orientations were different. The results showed that some holes formed at the fracture surface of the alloy with [111] rather than [001] orientation. Furthermore, the surface near the fracture of the two alloys with [001] and [111] orientations was serrated. Therefore, the fracture mechanism of the single crystal alloys with [001] and [111] orientations was ductile fracture. In addition, a large number of dislocations cut into the γ′ phase. Therefore, the cutting mechanism of dislocations in the alloys with [001] and [111] orientations was the creep deformation mechanism. |
| format | Article |
| id | doaj-art-f42f0b89b0fe44be811ef131d5f6fc88 |
| institution | Kabale University |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-f42f0b89b0fe44be811ef131d5f6fc882025-02-03T05:51:16ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2020-01-01202010.1155/2020/88181368818136Study on the Creep Behavior of a Ni3Al-Based Single Crystal Alloy at 850°C/450 MPaLiwu Jiang0Yu Yang1Meiling Wu2Min Cai3National Center for Materials Service Safety, University of Science and Technology Beijing, Beijing 100083, ChinaNational Center for Materials Service Safety, University of Science and Technology Beijing, Beijing 100083, ChinaBeijing Institute of Aeronautical Materials, Beijing 100095, ChinaAvic Manufacturing Technology Institute, Beijing 100024, ChinaThe creep behaviors of Ni3Al-based single crystal alloy IC6SX with [001] and [111] orientations under the condition of 850°C/450 MPa were investigated. The effect of crystal orientation on the creep lives, fracture morphology, fracture mechanism, and dislocation evolution of the alloys with different orientations was analyzed systematically. The results showed that the creep lives of the alloy were closely related to the crystal orientation under the condition of 850°C/450 MPa. The creep lives of the single crystal alloys with [001] and [111] orientations were 56.3 h and 126.9 h, respectively. Moreover, the fracture morphologies of the two alloys with [001] and [111] orientations were different. The results showed that some holes formed at the fracture surface of the alloy with [111] rather than [001] orientation. Furthermore, the surface near the fracture of the two alloys with [001] and [111] orientations was serrated. Therefore, the fracture mechanism of the single crystal alloys with [001] and [111] orientations was ductile fracture. In addition, a large number of dislocations cut into the γ′ phase. Therefore, the cutting mechanism of dislocations in the alloys with [001] and [111] orientations was the creep deformation mechanism.http://dx.doi.org/10.1155/2020/8818136 |
| spellingShingle | Liwu Jiang Yu Yang Meiling Wu Min Cai Study on the Creep Behavior of a Ni3Al-Based Single Crystal Alloy at 850°C/450 MPa International Journal of Photoenergy |
| title | Study on the Creep Behavior of a Ni3Al-Based Single Crystal Alloy at 850°C/450 MPa |
| title_full | Study on the Creep Behavior of a Ni3Al-Based Single Crystal Alloy at 850°C/450 MPa |
| title_fullStr | Study on the Creep Behavior of a Ni3Al-Based Single Crystal Alloy at 850°C/450 MPa |
| title_full_unstemmed | Study on the Creep Behavior of a Ni3Al-Based Single Crystal Alloy at 850°C/450 MPa |
| title_short | Study on the Creep Behavior of a Ni3Al-Based Single Crystal Alloy at 850°C/450 MPa |
| title_sort | study on the creep behavior of a ni3al based single crystal alloy at 850°c 450 mpa |
| url | http://dx.doi.org/10.1155/2020/8818136 |
| work_keys_str_mv | AT liwujiang studyonthecreepbehaviorofani3albasedsinglecrystalalloyat850c450mpa AT yuyang studyonthecreepbehaviorofani3albasedsinglecrystalalloyat850c450mpa AT meilingwu studyonthecreepbehaviorofani3albasedsinglecrystalalloyat850c450mpa AT mincai studyonthecreepbehaviorofani3albasedsinglecrystalalloyat850c450mpa |