THE EXTRUSION, FORGING, ROLLING, AND EVALUATION OF REFRACTORY ALLOYS
Rept. for 1 Aug 1962-31 May 1963
WESTINGHOUSE ELECTRIC CORP BLAIRSVILLE PA
Pagination or Media Count:
Wrought bars of tungsten-base alloys were produced by extrusion of arc-cast billets under a variety of conditions. Billets of WO.6Cb alloy were successfully extruded using temperatures between 3200 and 4200 F and reduction ratios between 3.91 and 8.31. A comparison was drawn between WO.6Cb extrusions produced from material melted by four suppliers. Differences in material characteristics could be traced to electrode suppliers. The W-6Mo2Cb alloy was extruded between 3400 and 4200 F using ratios from 4.11 to 7.41. Surfaces were generally fair to poor and internal cracks were discovered in many extrusions. Machining billets from 4-inch ingots instead of 3 12-in. ingots produced only a slight improvement in extrusion quality.
- Metallurgy and Metallography