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Subcritical Crack Growth on Crystallographic Planes in a Ni-base Superalloy: Relevance to Orientations☆
| Content Provider | Semantic Scholar |
|---|---|
| Author | Okazaki, Masakazu Sakaguchi, Motoki Yamagishi, Satoshi |
| Copyright Year | 2013 |
| Abstract | Abstract Cast Ni-based superalloys, essential materials for gas turbines, possess large grains comparable to wall thickness of structural components: e.g., blades and vanes. Fatigue cracks propagating in these kinds of materials must be significantly influenced by crystallographic factors of materials: e.g. orientation of grains and grain boundaries. This paper covers such a basic problem. For the purpose, at first an effect of crystallographic orientation on the crack propagation rate is introduced, using a single crystal Ni-based superalloy CMSX-4 specimen with different primary and secondary orientations. Discussions are also made on what mechanics and mechanisms control the fatigue crack propagation behavior, on the basis of anisotropic fracture mechanics. |
| Starting Page | 677 |
| Ending Page | 684 |
| Page Count | 8 |
| File Format | PDF HTM / HTML |
| DOI | 10.1016/j.proeng.2013.03.314 |
| Volume Number | 55 |
| Alternate Webpage(s) | https://core.ac.uk/download/pdf/82829065.pdf |
| Alternate Webpage(s) | https://doi.org/10.1016/j.proeng.2013.03.314 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
