Abstract
The microstructure of rapidly solidified powders of compositions corresponding to X7090 and X7091 have been characterized by the use of optical, scanning, and transmission microscopy. The powders were then cold compacted, heated, and extruded by a conventional route. It is shown that extrudates exhibiting excellent surface characteristics can be produced and that the pressure may be predicted from data obtained from torsion testing. The extrusion process can be performed utilizing greater ram speeds than are possible when processing IM (ingot metallurgy) material. The extrudate properties were investigated in the heat treated condition for both press quenched and aged and solution soaked and aged treatments. For both treatments the properties were similar and compared well with published data concerning these alloys. PM/0329
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