Investigation of the phase equilibrium of alloys of the ternary system Ti-Al-Nb
This investigation of the constitution diagram of the ternary system titanium-aluminum-niobium is limited to the specific system Ti-Ti3A1-Nb in order to establish the regions of the alpha and beta solid solutions of titanium, the solid solutions based on aluminide Ti3A1, and the phases conjugated with them. The constitution diagram of the systems Ti-A1 and Ti-Nb obtained from the data were used as the basis for constructing the constitution diagram of the ternary system. The methods of microstructural, thermal and X ray phase analysis were used in the study. The X ray pictures were taken in copper emission from powders that had been preliminarily annealed in a vacuum at 600 for 30 min. Iodic titanium, aluminum brand AV-000 and fillet niobium were used as the source materials. The alloys were remelted five times in an electric-arc furnace with a nonconsumable tungsten electrode in an argon atmosphere, and then by crucibleless melting in the suspended state. The constancy of the chemical composition of the alloys was monitored by their weight after smelting in an electric arc furnace.
- Research Organization:
- Air Force Systems Command, Wright-Patterson AFB, OH (USA). Foreign Technology Div.
- OSTI ID:
- 5684696
- Report Number(s):
- AD-A-186367/9/XAB; FTD-ID(RS)T-0744-87
- Resource Relation:
- Other Information: Edited trans. of mono. Novyy Konstruktsionny Material Titan, Moscow, 19-23(1972), by Carol S. Nack
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ALUMINIUM ALLOYS
PHASE STUDIES
NIOBIUM ALLOYS
TITANIUM ALLOYS
ARGON
CHEMICAL COMPOSITION
COPPER
ELECTRIC ARCS
ELECTRIC FURNACES
EMISSION
MICROSTRUCTURE
POWDER METALLURGY
POWDERS
SMELTING
SOLID SOLUTIONS
THERMAL ANALYSIS
ALLOYS
CRYSTAL STRUCTURE
CURRENTS
DISPERSIONS
ELECTRIC CURRENTS
ELECTRIC DISCHARGES
ELEMENTS
FLUIDS
FURNACES
GASES
METALLURGY
METALS
MIXTURES
NONMETALS
RARE GASES
SOLUTIONS
TRANSITION ELEMENTS
360102* - Metals & Alloys- Structure & Phase Studies