Accession Number:

AD0259618

Title:

WELDING OF TECHNICAL MOLYBDENUM IN AN INERT ATMOSPHERE

Descriptive Note:

Corporate Author:

FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s):

Report Date:

1961-06-02

Pagination or Media Count:

1.0

Abstract:

CONCLUSIONS When welding sintered Mo in chambers with an Ar atmosphere, it was not possible to obtain good quality welded joints because of the formation of cracks. The introduction of Ti foil into the zone of the seam permitted a crackless welded joint, but its plasticity was low. When welding cast Mo in chambers with Ar atmosphere, the seams were free of cracks and had a good appearance. The strength of the welded joints at room temperature was 50 to 56 of the strength of the base metal. The strength at 250 C was 45 to 60 of the strength of the base metal at the same temperature. The plasticity of welded joints in cast Mo immediately after welding was low. By subsequent thermal processing in vacuo, it was possible to increase the plasticity of the base metal and welded joints at room temperature. Plasticity of the base metal and welded joints can be increased by removing the upper metal layers. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE