DEVELOPMENT OF NIOBIUM-BASE ALLOYS. Period covered: June 1, 1958 to June 1, 1959
Vacuum tensile data were obtained for pure niobium at 68 to 2500 deg F. The data for niobium followed the general pattern exbibited by other pure refractory metals. The ductile-brittle transition (in impact) for commercial purity, arc melted niobium was close to room temperature. The effect of binary additions ofTi, Zr, Hf, V, Mo, W, Re, Al, sed Y on the hardness and workability of niobium was determined. Nb-Ti and Nb-Y alloys exhibited excellent cold workbility. Mechanical property data were obtained at room temperature and 2000 deg F on niobium containing additions of Ti, Zr, Hf, V, Mo, and W. Of the element studied, vanadium additions were the most effective strengtheners. Nb-Sr Qd Nb-W alloys having his oxygen contents exhibited very good high temperature properties. It appeared that the interaction of oxygen with the alloy addition may be responsible for the high strength. Tensile data were obtained on alloys having ternary and quaternary additions of Ti, Zr, Hf, and Mo. Nb-Ti-Sr-Hf alloys exhdbited yield studies on a number of niobium alloys containig additions of Ti, Zr, Hf, V, and W were carried out. Satisfactory welds were obtained in all the alloys studied. Bend test data were obtained on the weld specimens. (auth)
- Research Organization:
- Westinghouse Electric Corp. Aviation Gas Turbine Div., Kansas City, Mo.; Westinghouse Electric Corp. Research Labs., Pittsburgh
- DOE Contract Number:
- AF33(616)-5754
- NSA Number:
- NSA-14-012843
- OSTI ID:
- 4169601
- Report Number(s):
- WADC-TR-57-344(Pt.IV)
- Resource Relation:
- Other Information: Project title: METALLIC MATERIALS. Task title: REFRACTORY METALS. Orig. Receipt Date: 31-DEC-60
- Country of Publication:
- United States
- Language:
- English
Similar Records
PROGRESS RELATING TO CIVILIAN APPLICATIONS DURING AUGUST 1959
DEVELOPMENT OF NIOBIUM-BASE ALLOYS. Quarterly Progress Report No. 3 for November 1, 1958 to February 1, 1959
Related Subjects
ADDITIVES- ALUMINUM ALLOYS- COLD WORKING- DUCTILITY- EFFICIENCY- HAFNIUM ALLOYS- HARDNESS- HIGH TEMPERATURE- IMPURITIES- MECHANICAL PROPERTIES- MOLYBDENUM ALLOYS- NIOBIUM ALLOYS- OXYGEN- RHENIUM ALLOYS- TENSILE PROPERTIES- TITANIUM ALLOYS- TUNGSTEN ALLOYS- VANADIUM ALLOYS- YTTRIUM ALLOYS- ZIRCONIUM ALLOYS
ADDITIVES- HAFNIUM ALLOYS- INTERACTIONS- MOLYBDENUM ALLOYS- NIOBIUM ALLOYS- OXYGEN- TENSILE PROPERTIES- TITANIUM ALLOYS- ZIRCONIUM ALLOYS
BRITTLENESS- DUCTILITY- ELECTRIC ARCS- IMPURITIES- MELTING- NIOBIUM- TENSILE PROPERTIES- VACUUM
HAFNIUM ALLOYS- MATERIALS TESTING- NIOBIUM ALLOYS- TENSILE PROPERTIES