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

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE