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Creep-rupture behavior of a nickel-based single crystal superalloy
| Content Provider | Scilit |
|---|---|
| Author | Liu, Weiwei Guo, Yuanyuan Zhang, Mai Xiong, Jichun Zhang, Jian |
| Copyright Year | 2019 |
| Description | Journal: Iop Conference Series: Materials Science and Engineering A first generation single crystal superalloy was employed to research the high temperature creep behavior. Scanning electron microscope (SEM), transmission electron microscope (TEM) are used. The main results are summarized below: There are two mechanisms for the steady creep. The first one is superlattice dislocation cutting γ' precipitates, which is the main mechanism for 1000°C creep behavior. In this case, the creep rate increases when the γ/γ' microstructure undergoes topological inversion, which leads to a rapid increase in the density of γ' cutting dislocation. The second mechanism is transverse climb of a/2 interfacial dislocation, which is the main mechanism for 1100°C creep behavior. In this case, climb of interfacial dislocations produced most of the steady creep strain. A by-product is the vacancies diffusing along the interfaces and low angle boundary to pores. |
| Related Links | https://iopscience.iop.org/article/10.1088/1757-899X/605/1/012021/pdf |
| ISSN | 17578981 |
| e-ISSN | 1757899X |
| DOI | 10.1088/1757-899x/605/1/012021 |
| Journal | Iop Conference Series: Materials Science and Engineering |
| Issue Number | 1 |
| Volume Number | 605 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 2019-08-01 |
| Access Restriction | Open |
| Subject Keyword | Journal: Iop Conference Series: Materials Science and Engineering Metallurgy and Metallurgical Engineering |
| Content Type | Text |
| Resource Type | Article |
