Accession Number:
AD0259569
Title:
MOLYBDENUM FORGING PROCESS DEVELOPMENT
Descriptive Note:
Interim technical progress rept. no. 4, 15 Apr-15 Jun 61,
Corporate Author:
WESTINGHOUSE ELECTRIC CORP BLAIRSVILLE PA
Personal Author(s):
Report Date:
1961-06-15
Pagination or Media Count:
1.0
Abstract:
A technique for the direct hot-work forging of arc-cast TZM alloy ingots was developed. Forging above 1950 C provides a working temperature range in which the plasticity of the material results in satisfactory workability. However, heating to temperatures above 1950 C tends to coarsen the grain structure and permits the formation of an undesirable carbide phase which adversely affects the strength properties. By resolution treating hot-worked material at 1900 to 1950 C and reworking in one heat, a change in size, and distribution of the carbide phase together with some grain refinement, results in outstanding high temperature strengths. After a controlled amount of cold work, room temperature strengths are greatly improved with little effect on the high temperature strengths. Author
Descriptors:
- *FORGING
- *MOLYBDENUM ALLOYS
- CARBIDES
- CASTING
- CREEP
- CRYSTAL STRUCTURE
- DEFORMATION
- ELECTRIC ARCS
- GRAIN STRUCTURES(METALLURGY)
- HARDNESS
- HEAT TREATMENT
- MANUFACTURING
- MECHANICAL PROPERTIES
- MELTING
- MICROSTRUCTURE
- MOLYBDENUM
- NONDESTRUCTIVE TESTING
- PROCESSING
- QUALITY CONTROL
- TITANIUM ALLOYS
- ULTRASONIC RADIATION
- ZIRCONIUM ALLOYS