APPEARANCE OF SUPERPLASTICITY IN MOLTEN EUTECTOIDS

Journal Article · Thu Jan 01 04:00:00 EST 1959 · Izvest. Akad. Nauk S.S.S.R., Otdel. Tekh. Nauk, Met. i Toplivo

OSTI ID:4257527

Presnyakov, A A; Starikova, G V

Experiments werc conducted with Al--Cu (33% Cu), Al--Si (11.7% Si), Al -- Ni (5.7% Ni), and Al--Fc (1.9% Fe) in order to determine the conditions of eutectic superplasticity. In addition to tests on the elongation of specimens, microstructure and x-ray analyses were made of the fast-cooled recrystallization and hot-deformation microsection (at on the density 50% cold hardening and tempering at 250 C for 5 hours). For Al--Si and Al--Cu the highest plasticity points were found at 500 C and near the eutectic temperature, with constriction of 0.90 and elongation of 117%, while in Al--Ni and Al-- Fe effects of superplasticity were not observed. The elongation in Al-Ni eutectics is about 60% and in Al--Fe it is about 48% though the plasticity reaches 1.00 at 500 C. However, the plasticity of these specimens begins to grow at an earlier point ( sintering time 300 ) than in Al--Si or Al--Cu. The x-ray and microstructure pictures of specimens after hot deformation and tempering and after annealing from a liquid state are included. (R.V.J.)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-13-014553
• OSTI ID: 4257527
• Journal Information: Izvest. Akad. Nauk S.S.S.R., Otdel. Tekh. Nauk, Met. i Toplivo, Journal Name: Izvest. Akad. Nauk S.S.S.R., Otdel. Tekh. Nauk, Met. i Toplivo Vol. Vol: No. 1
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ALUMINUM ALLOYS
COPPER ALLOYS
DEFORMATION
DUCTILITY
EUTECTICS
IRON ALLOYS
LATTICES
MEASURED VALUES
METALLURGY AND CERAMICS
NICKEL ALLOYS
RECRYSTALLIZATION
SILICIDES
TENSILE PROPERTIES
X RADIATION