| タイトル | Superalloy microstructural variations induced by gravity level during directional solidification |
| 著者（英） | Curreri, P. A.; Johnston, M. H.; Alter, W. S.; Parr, R. A. |
| 著者所属（英） | NASA Marshall Space Flight Center |
| 発行日 | 1985-09-01 |
| 言語 | eng |
| 内容記述 | The Ni-base superalloy MAR-M246 (Hf) was directionally solidified during low gravity maneuvers aboard a NASA KC-135 aircraft. Gravity force variations during this process yielded a concomitant variation in microstructure and microsegregation. Secondary dendrite arm spacings are noted to be larger in the low-g portion; this, in turn, decreases the extent of interdendritic segregation. The amount of Hf in both the carbides and interdendritic eutectic increases as the gravity force diminishes. Fewer carbides are present in the low-g regions. |
| NASA分類 | METALLIC MATERIALS |
| レポートNO | 85A48274 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/389681 |
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