| タイトル | The effect of axial crucible rotation on microstructural uniformity during horizontal directional solidification |
| 著者（英） | Woodward, Tracey; Kim, Shinwoo; Wang, T. G.; Grugel, R. N. |
| 著者所属（英） | NASA Headquarters |
| 発行日 | 1992-08-01 |
| 言語 | eng |
| 内容記述 | The effects on microstructure of crucible orientation with respect to the earth's gravitational vector, g, during directional solidification of low-volume fraction copper and aluminum, Pb-Cu, and Sn-Al alloys are examined. It is demonstrated that horizontal alignment (i.e. perpendicular to g) in combination with axial rotation of the crucible during growth is sufficient to negate factors which initiate macrosegregation, e.g. density gradients attributed to temperature and/or compositional differences, and promotes a uniform microstructure. |
| NASA分類 | MATERIALS PROCESSING |
| レポートNO | 92A54719 |
| 権利 | Copyright |
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