EXTRUSION AND MECHANICAL PROPERTIES OF SOME MOLYBDENUM- AND TUNGSTEN-BASE ALLOYS

Technical Report · Wed Mar 15 04:00:00 EST 1961

OSTI ID:4831802

Semchyshen, M; Barr, R Q

Successful extrusion techniques have been developed for several Mo-base alloys, W-Mo binary alloys, and for unalloyed W. Successful extrusions were performed at temperature from 2000 to 3200 deg F, and at reduction ratios from 4: 1 to 8: 1. The use of ceramic (Al/sub 2/O/sub 3/)-faced extrusion dies was found to reduce the resistance to extrusion and to improve the recovery of sound stock. Many of the extruded bars were successfully converted to bar stock by rolling at 2400 deg F. Excellent high-temperature tensile and creeprupture strengths were displayed by several of the alloys. Strengths of binary alloys of W with 10, 30, or 50% Mo were below those of the better Mo-base alloys at test temperature of 2400 deg F and below. A relationship is proposed to describe the effect of exposure time on the recrystallization behavior of unalloyed Mo, Mo + 0.50% Ti, Mo + 0.059% Zr, and Mo + 0.49% Ti + 0.057% Zr. The effect of externally applied stresses on the recrystallization behavior of these materials is also treated. (auth)

• Research Organization: Climax Molybdenum Co. of Michigan, Detroit
• NSA Number: NSA-16-003445
• OSTI ID: 4831802
• Report Number(s): ASD-TR-61-193
• Country of Publication: United States
• Language: English

Related Subjects

ALUMINUM OXIDES
CERAMICS
COATING
CREEP
DIES
EXTRUSION
HIGH TEMPERATURE
MECHANICAL PROPERTIES
METALS, CERAMICS, AND OTHER MATERIALS
MOLYBDENUM ALLOYS
QUANTITY RATIO
RECOVERY
RECRYSTALLIZATION
RODS
ROLLING
STRESSES
TENSILE PROPERTIES
TITANIUM ALLOYS
TUNGSTEN
TUNGSTEN ALLOYS
ZIRCONIUM ALLOYS