THE DEVELOPMENT AND EVALUATION OF TUNGSTEN-BASE ALLOYS.
Quarterly rept. no. 1, 15 Mar-15 Jun 62,
CLIMAX MOLYBDENUM CO OF MICHIGAN DETROIT
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Binary W-base alloys containing small additions of Nb, Hf, or Zr, and ternary W-base alloys containing additions of Mo with Hf or Zr were consolidated by the vacuum-arc-casting process. Metallographic studies and hot-hardness determinations are reported. Machined blanks from each heat were extruded to round billet form at temperatures from 3000 to 4260 F. Preliminary indications are that extrusion recoveries will be low. In general, bars extruded at high temperatures contained relatively deep surface ruptures, while those extruded at low temperatures contained internal cracks. Author