INVESTIGATION OF THE PHYSICAL METALLURGY OF JOINING TUNGSTEN AND COLUMBIUM. Quarterly Progress Report No. 6, May 1, 1962-August 1, 1962
The metallographic analysis of 14 braze alloys for Nb was completed. Studies of the effect of brazing parameters and testing variables on joint re- melt temperature were continued. The braze alloys for W were evaluated for melting range and examined metallographically. Electronbeam-melted ingots of W- Hf and W-- Hf- C systems were successfully worked into sheet. No evidence of significant grain-boundary hardening in W alloys was observed in transverses made with symmetrical randomly oriented indenters. Annealing of unalloyed W in an ultra-high vacuum environment improved the low-temperature ductility. The tensile shear strength of lap joints diffusion bonded between Nb-- Zr and stainless steel, Nb-- Zr and Cu, and Cu and stainless steel was determined. (M.C.G.)
- Research Organization:
- General Electric Co. Flight Propulsion Lab. Dept., Cincinnati
- NSA Number:
- NSA-17-001897
- OSTI ID:
- 4770079
- Report Number(s):
- NP-12144; DM62-217; 62AS-12
- Country of Publication:
- United States
- Language:
- English
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DETERMINATION OF THE NIOBIUM-RICH REGION OF THE TERNARY PHASE DIAGRAMS, NIOBIUM-TUNGSTEN-HAFNIUM AND NIOBIUM-TUNGSTEN-ZIRCONIUM. Quarterly Report No. 2, December 1, 1962 to March 1, 1963
REACTOR TECHNOLOGY REPORT NO. 16-METALLURGY
Related Subjects
BRAZING
CARBIDES
COPPER
DIFFUSION
DISTRIBUTION
DUCTILITY
ELECTRON BEAMS
GRAIN BOUNDARIES
HAFNIUM ALLOYS
JOINTS
LOW TEMPERATURE
MELTING
METALLOGRAPHY
METALS, CERAMICS, AND OTHER MATERIALS
NIOBIUM ALLOYS
PHASE DIAGRAMS
SHEAR
SHEETS
STAINLESS STEELS
TEMPERING
TENSILE PROPERTIES
TESTING
TUNGSTEN
TUNGSTEN ALLOYS
VACUUM
ZIRCONIUM ALLOYS