| タイトル | The influence of processing parameters on microstructural development of low-weight-percent primary, pro-eutectic, dendritic alloys during directional solidification |
| 著者（英） | Kim, Shinwoo; Grugel, R. N.; Woodward, Tracey; Wang, T. G. |
| 著者所属（英） | NASA Headquarters |
| 発行日 | 1992-01-01 |
| 言語 | eng |
| 内容記述 | Alloy compositions centering about Sn- 5 to 15 wt pct Al and Pb- 4 to 20 wt pct Cu have been directionally solidified as a function of growth rate and orientation with respect to earth's gravity vector. The effect of these processing variables on macrosegregation is presented, and the consequence of a structural transition from primary columnar to equiaxed dendritic growth is examined. Effects detrimental to microstructure and attributed to density variations are shown to be minimized by a novel processing technique. In view of the ground-based results, some considerations follow regarding what might be gained by solidifying these alloys in a microgravity environment. |
| NASA分類 | MATERIALS PROCESSING |
| レポートNO | 92A25793
AIAA PAPER 92-0349 |
| 権利 | Copyright |
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