Effect of alloying additions on the superplastic properties of Ti-6 pct Al-4 pct V

Journal Article · Wed Jan 01 04:00:00 EST 1986 · Metall. Trans., A; (United States)

DOI:https://doi.org/10.1007/BF02644445· OSTI ID:7225606

Leader, J R; Neal, D F; Hammond, C

The superplastic deformation properties of Ti-6 pct Al-4 pct V and modified alloys containing 1/4 pct, 1/2 pct, 1 pct, and 2 pct of either cobalt or nickel have been investigated in the temperature range 950 to 750 C. The results show that both cobalt and nickel modified alloys have reduced flow stresses, in comparison with Ti-6 pct Al-4 pct V, the reductions being particularly marked at the lower temperatures and lower strain rates. The results are shown to be consistent with and isostress model for the deformation of (alpha + beta) two-phase alloys in which the varying beta volume fractions and differing diffusivities of titanium, cobalt, or nickel in the beta phase are taken into account. 17 references.

• Research Organization: Lucas Aerospace, Ltd., Burnley, England; IMI Titanium, Ltd., Birmingham, England; Leeds Univ., England
• OSTI ID: 7225606
• Journal Information: Metall. Trans., A; (United States), Journal Name: Metall. Trans., A; (United States) Vol. 17A; ISSN MTTAB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
ADDITIVES
ALLOYS
ALUMINIUM ALLOYS
COBALT
CRYSTAL STRUCTURE
ELEMENTS
GRAIN SIZE
MECHANICAL PROPERTIES
METALLURGICAL EFFECTS
METALS
MICROSTRUCTURE
NICKEL
PLASTICITY
SIZE
STRAIN RATE
TITANIUM ALLOYS
TITANIUM BASE ALLOYS
TRANSITION ELEMENTS
VANADIUM ALLOYS