High-Temperature Creep Behavior of a Nickel-Based Single-Crystal Superalloy with Small-Angle Deviation from [111] Orientation
By means of tensile creep tests and microstructure analysis, the creep behavior and deformation mechanism of a nickel-based single-crystal alloy with small-angle deviations from the [111] orientation at 1040°C/137 MPa were investigated. The results suggested that in the early stage of creep, prolife...
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| Format: | Article |
| Language: | English |
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Wiley
2022-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2022/9880484 |
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| author | Guangyan Wang Song Zhang Guoqi Zhao Ning Tian Huajin Yan Sugui Tian Fangwei Jin |
| author_facet | Guangyan Wang Song Zhang Guoqi Zhao Ning Tian Huajin Yan Sugui Tian Fangwei Jin |
| author_sort | Guangyan Wang |
| collection | DOAJ |
| description | By means of tensile creep tests and microstructure analysis, the creep behavior and deformation mechanism of a nickel-based single-crystal alloy with small-angle deviations from the [111] orientation at 1040°C/137 MPa were investigated. The results suggested that in the early stage of creep, proliferating dislocations generated by different slip systems get accumulated in the γ phase. Dislocations mainly slipped in the γ phase and climbed over the γ′ phase, and they began to form a dislocation network at the interface. γ′ phases were connected to each other, and the coherence relationship was destroyed. In the steady-state stage of creep, the solid interfacial dislocation network was formed, and the γ′ phase transformed into a lamellar raft structure, which hinders the slip and climb of dislocations in the matrix channel. In the accelerated creep stage, the dislocation network was destroyed, and dislocations sheared into the γ′ phase in the way of dislocation pairs, which could react to form a superdislocation node and decompose to form APBs on the <111> plane or cross slip from the <111> plane to the <100> plane to form K-W locks. |
| format | Article |
| id | doaj-art-0ebfa22b06044efb9145c4ef0dd7d273 |
| institution | Kabale University |
| issn | 1687-8442 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-0ebfa22b06044efb9145c4ef0dd7d2732025-02-03T05:57:56ZengWileyAdvances in Materials Science and Engineering1687-84422022-01-01202210.1155/2022/9880484High-Temperature Creep Behavior of a Nickel-Based Single-Crystal Superalloy with Small-Angle Deviation from [111] OrientationGuangyan Wang0Song Zhang1Guoqi Zhao2Ning Tian3Huajin Yan4Sugui Tian5Fangwei Jin6School of Materials Science and EngineeringSchool of Materials Science and EngineeringGuizhou Laboratory of Reliability Evaluation of Metal Material Under Specific EnvironmentGuizhou Laboratory of Reliability Evaluation of Metal Material Under Specific EnvironmentGuizhou Laboratory of Reliability Evaluation of Metal Material Under Specific EnvironmentSchool of Materials Science and EngineeringGuizhou Laboratory of Reliability Evaluation of Metal Material Under Specific EnvironmentBy means of tensile creep tests and microstructure analysis, the creep behavior and deformation mechanism of a nickel-based single-crystal alloy with small-angle deviations from the [111] orientation at 1040°C/137 MPa were investigated. The results suggested that in the early stage of creep, proliferating dislocations generated by different slip systems get accumulated in the γ phase. Dislocations mainly slipped in the γ phase and climbed over the γ′ phase, and they began to form a dislocation network at the interface. γ′ phases were connected to each other, and the coherence relationship was destroyed. In the steady-state stage of creep, the solid interfacial dislocation network was formed, and the γ′ phase transformed into a lamellar raft structure, which hinders the slip and climb of dislocations in the matrix channel. In the accelerated creep stage, the dislocation network was destroyed, and dislocations sheared into the γ′ phase in the way of dislocation pairs, which could react to form a superdislocation node and decompose to form APBs on the <111> plane or cross slip from the <111> plane to the <100> plane to form K-W locks.http://dx.doi.org/10.1155/2022/9880484 |
| spellingShingle | Guangyan Wang Song Zhang Guoqi Zhao Ning Tian Huajin Yan Sugui Tian Fangwei Jin High-Temperature Creep Behavior of a Nickel-Based Single-Crystal Superalloy with Small-Angle Deviation from [111] Orientation Advances in Materials Science and Engineering |
| title | High-Temperature Creep Behavior of a Nickel-Based Single-Crystal Superalloy with Small-Angle Deviation from [111] Orientation |
| title_full | High-Temperature Creep Behavior of a Nickel-Based Single-Crystal Superalloy with Small-Angle Deviation from [111] Orientation |
| title_fullStr | High-Temperature Creep Behavior of a Nickel-Based Single-Crystal Superalloy with Small-Angle Deviation from [111] Orientation |
| title_full_unstemmed | High-Temperature Creep Behavior of a Nickel-Based Single-Crystal Superalloy with Small-Angle Deviation from [111] Orientation |
| title_short | High-Temperature Creep Behavior of a Nickel-Based Single-Crystal Superalloy with Small-Angle Deviation from [111] Orientation |
| title_sort | high temperature creep behavior of a nickel based single crystal superalloy with small angle deviation from 111 orientation |
| url | http://dx.doi.org/10.1155/2022/9880484 |
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