| Role of microstructural stability and superdislocation shearing on creep behavior of two low-cost Ni-based single crystal superalloys at 1100 °C/ 130 MPa | |
| Lv, Peisen1; Liu, Lirong1; Yang, Yanhong2; Zhao, Yunsong3; Zhang, Jian3 | |
| Corresponding Author | Liu, Lirong(lrliu@sut.edu.cn) ; Yang, Yanhong(yhyang@imr.ac.cn) |
| 2023-11-17 | |
| Source Publication | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| ISSN | 0921-5093 |
| Volume | 888Pages:13 |
| Abstract | In order to satisfy the pursuit of advanced aeroengines with low cost and high temperature capacity, the novel Re-free and Re-low single crystal superalloys were designed based on the strategy of Re-reduction. The creep lives of the two experimental alloys at 1100 degrees C/130 MPa both exceed that of Ren & eacute; N5, and the Re-low alloy displays better creep performance and microstructural stability than the Re-free alloy. At the end of steady creep stage, due to the strong hindrance of interfacial dislocation networks, only a few superdislocations with Burgers vectors a<110> and a<001> enter into gamma ' phase in the Re-low alloy. In the Re-free alloy, non-uniform plastic deformation leads to the severe gamma/gamma ' topological inversion, resulting in high-density a<110> superdislocation arrays in gamma ' rafts, which can further react to form superdislocation networks. Moreover, the increasing mu phase precipitated with the prolonging creep time also promotes earlier failure of the Re-free alloy. In summary, the Re addition can improve creep resistance through reducing rafting rate of gamma ' particles, stabilizing interfacial dislocation networks and increasing the APB energy of ordered gamma ' phase. The above results provide favorable experimental basis for the development of low-cost single crystal superalloys. |
| Keyword | Single crystal superalloy Creep TCP phase Superdislocation network Superdislocation |
| Funding Organization | Natural Science Foundation of China |
| DOI | 10.1016/j.msea.2023.145796 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Natural Science Foundation of China[52001297] |
| WOS Research Area | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:001102993300001 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/177493 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Liu, Lirong; Yang, Yanhong |
| Affiliation | 1.Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110870, Liaoning, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shi changxu Innovat Ctr Adv Mat, Liaoning 110016, Peoples R China 3.Beijing Inst Aeronaut Mat, Sci & Technol Adv High Temp Struct Mat Lab, Beijing 100095, Peoples R China |
| Recommended Citation GB/T 7714 | Lv, Peisen,Liu, Lirong,Yang, Yanhong,et al. Role of microstructural stability and superdislocation shearing on creep behavior of two low-cost Ni-based single crystal superalloys at 1100 °C/ 130 MPa[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2023,888:13. |
| APA | Lv, Peisen,Liu, Lirong,Yang, Yanhong,Zhao, Yunsong,&Zhang, Jian.(2023).Role of microstructural stability and superdislocation shearing on creep behavior of two low-cost Ni-based single crystal superalloys at 1100 °C/ 130 MPa.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,888,13. |
| MLA | Lv, Peisen,et al."Role of microstructural stability and superdislocation shearing on creep behavior of two low-cost Ni-based single crystal superalloys at 1100 °C/ 130 MPa".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 888(2023):13. |
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