Extrusion and Mechanical Properties of Some Molybdenum- and Tungsten-Base Alloys.
CLIMAX MOLYBDENUM CO OF MICHIGAN DETROIT
Pagination or Media Count:
Extrusion techniques were developed for several Mo base alloys, W-Mo binary alloys, and for unalloyed W. Extrusions were performed from 2000 to 3200 F, and at reduction ratios from 41 to 81. Al2O3-faced extrusion dies reduced the resistance to extrusion and improved the recovery of sound stock. The problems of die wash and poor bar surfaces associated with hightemperature extrusions through steel dies were circumvented by the ceramic facing. Extruded bars were converted to bar stock by rolling at 2400 F. The degree of success achieved in preparing bar stock from the extruded bars decreased as the amount of W in the alloy increased. Good high-temperature tensile and creep-rupture strengths were displayed by 3 alloys. Author