MOLYBDENUM FORGING PROCESS DEVELOPMENT
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 15, 1961
- Accession Number
- AD0259569
Entities
People
- J. Bonchak
Organizations
- Westinghouse Electric Corporation