| タイトル | The effect of porosity and gamma-gamma-prime eutectic content on the fatigue behavior of hydrogen charged PWA 1480 |
| 著者（英） | Gabb, T. P.; Gayda, J.; Dreshfield, R. L. |
| 著者所属（英） | NASA Lewis Research Center |
| 発行日 | 1991-11-01 |
| 言語 | eng |
| 内容記述 | The study addresses the effect of systematically varying gamma-gamma-prime eutectic content and porosity level on the fatigue life of a hydrogen-charged single crystal PWA 1480 superalloy. Four microstructural variants are produced, and differences in gamma-gamma-prime eutectic morphology among the four processing variants are analyzed. Single valued tensile test data indicate that the tensile and yield strength of the PWA 1480 are degraded by hydrogen charging, with the exception of the material given a eutectic solution treatment. It is shown that the reduction of the fatigue life can be minimized by a duplex thermomechanical treatment consisting of a eutectic solution followed by hot isostatic pressing. |
| NASA分類 | METALLIC MATERIALS |
| レポートNO | 92A12046 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/331487 |
