| タイトル | Grain boundary oxidation and fatigue crack growth at elevated temperatures |
| 本文（外部サイト） | http://hdl.handle.net/2060/19870002440 |
| 著者（英） | Oshida, Y.; Liu, H. W. |
| 著者所属（英） | Syracuse Univ. |
| 発行日 | 1986-10-01 |
| 言語 | eng |
| 内容記述 | Fatigue crack growth rate at elevated temperatures can be accelerated by grain boundary oxidation. Grain boundary oxidation kinetics and the statistical distribution of grain boundary oxide penetration depth were studied. At a constant delta K-level and at a constant test temperature, fatigue crack growth rate, da/dN, is a function of cyclic frequency, nu. A fatigue crack growth model of intermittent micro-ruptures of grain boundary oxide is constructed. The model is consistent with the experimental observations that, in the low frequency region, da/dN is inversely proportional to nu, and fatigue crack growth is intergranular. |
| NASA分類 | METALLIC MATERIALS |
| レポートNO | 87N11873
NAS 1.26:179529
NASA-CR-179529 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/152919 |
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