ALLOYS OF THE Ti-Al-Mn SYSTEM (in Russian)
The mechanical and engineering properties of the Ti- Al-Mn system up to a Mn and Al concentration of 9% for each of these additives were investigated for the purpose of developing compositions suitable for the fabrication of sheets. The specimens prepared were soaked at 800 deg C for 1 hour in vacuum, then cooled at a rate of 2 to 3 deg C/min. Several melts presented a good combination of plasticity and tensile strength at room temperature: the yield strength of the high-alloy material reached a value of 115 kg/mm/sup 2/, its elongation was 12% and its toughness 3.3 kgm/cm/sup 2/; the yield strength increase and the two other properties decreased with respect to technical Ti. Tensile tests at room temperature showed that addition of Al and Mn exerts a beneficial effect. Increase of the Al concentration reduced the forgeability of the alloy; Mn affected the weldability unfavorably. Commercial alloys of this system were also tested and were found to have properties similar to technical Ti. The technical alloys could be easily welded under argon arc. The annealing temperature had a noticeable influence on the mechanical properties of the alloys; with increasing Al concentration the annealing temperature must be raised. (TTT)
- Research Organization:
- Originating Research Org. not identified
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-15-028066
- OSTI ID:
- 4843461
- Journal Information:
- Metalloved. i Termicheskaya Obrabotka Metal., Journal Name: Metalloved. i Termicheskaya Obrabotka Metal. Vol. Vol: No. 7
- Country of Publication:
- Country unknown/Code not available
- Language:
- Russian
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Related Subjects
ANNEALING
ARGON
COOLING
DUCTILITY
EFFICIENCY
ELECTRIC ARCS
FABRICATION
FORGING
HIGH TEMPERATURE
INERT GASES
MANGANESE ALLOYS
MECHANICAL PROPERTIES
METALS, CERAMICS, AND OTHER MATERIALS
PHASE DIAGRAMS
SHEETS
TEMPERATURE
TENSILE PROPERTIES
TESTING
TITANIUM
TITANIUM ALLOYS
VACUUM
WELDING