WELDING EVALUATION OF EXPERIMENTAL COLUMBIUM ALLOYS

Journal Article · Sun Mar 01 04:00:00 EST 1964 · Welding J. (N.Y.)

OSTI ID:4084065

Lessmann, G G

Welding studies conducted concurrentiy with an alloy scale-up effort in which several promising Nb alloy systems were eva1uated are described. Emphasis on alloy evaluation was placed on weldability as well as strength. In particular, alloy ductility as determined by bend testing in both the base metal and weld metal was stressed. Nb is strengthened significantiy by alloying with the elements Mo, W, V, and/ or Zr. The alloying systems investigated included Nb- -V, Nb-- Mo-V, Nb-- Mo-- V-- Zr, and Nb--W-- V-- Zr. Both high and low interstitial alloys were investigated. Good aswelded ductility was obtained only in those having low total interstitial levels (<300 ppm total C, O, and N). The Nb--5Mo--5V-- 1Zr alloy proved to be most promising providing high tensile strength (38000 pse at 2200 deg F) with a minimum compromise of weldability and weld ductility. (P.C.H.)

• Research Organization: Westinghouse Electric Corp., Pittsburgh
• NSA Number: NSA-18-014448
• OSTI ID: 4084065
• Journal Information: Welding J. (N.Y.), Journal Name: Welding J. (N.Y.) Vol. Vol: 43
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

CARBON
DEFECTS
DUCTILITY
EFFICIENCY
HIGH TEMPERATURE
INTERSTITIALS
LATTICES
MATERIALS TESTING
METALS, CERAMICS, AND OTHER MATERIALS
MOLYBDENUM ALLOYS
NIOBIUM ALLOYS
NITROGEN
OXYGEN
PRESSURE
STRESSES
TENSILE PROPERTIES
TUNGSTEN ALLOYS
VANADIUM ALLOYS
WELDING
ZIRCONIUM ALLOYS