Accession Number:

AD0483287

Title:

INTERMEDIATE-TEMPERATURE DUCTILITY AND STRENGTH OF TUNGSTEN AND MOLYBDENUM TZM

Descriptive Note:

Final rept. 1 Jul 1964-30 Aug 1965

Corporate Author:

BATTELLE MEMORIAL INST COLUMBUS OH

Personal Author(s):

• Wilcox, B. A.
• Gilbert, A.
• Allen, B. C.

Report Date:

1966-04-01

Pagination or Media Count:

115.0

Abstract:

The ductility and strength of tungsten and molybdenum TZM have been studied as a function of temperature with emphasis on investigating the effects of strain rate, structural condition, and carbon content on mechanical properties. Both wrought-stress-relieved and recrystallized tungsten and Mo-TZM have been tested at strain rates of 0.01, 2, and 600 per min. over the temperature range -200 to 1850 C. In recrystallized Mo-TZM alloys, an intermediate-temperature region about 1100-1500 C of reduced ductility at the two lower strain rates was found to be caused by pronounced grain-boundary cracking. This phenomenon is associated with dynamic strengthening of the matrix as a result of precipitation during deformation.

Descriptors:

• *MOLYBDENUM ALLOYS
• *TUNGSTEN
• ANNEALING
• BRITTLENESS
• CARBON ALLOYS
• DUCTILITY
• EXPERIMENTAL DATA
• FRACTURE(MECHANICS)
• GRAIN BOUNDARIES
• HARDNESS
• HEAT TREATMENT
• LOADS(FORCES)
• MICROSTRUCTURE
• STRAIN(MECHANICS)
• STRUCTURAL PROPERTIES
• TEMPERATURE
• TENSILE PROPERTIES
• TITANIUM ALLOYS
• ZIRCONIUM ALLOYS

Subject Categories:

• Properties of Metals and Alloys

Distribution Statement:

APPROVED FOR PUBLIC RELEASE