THE EVOLUTION OF THE ELECTRICAL RESISTANCE OF COLD-WORKED "MELTED ZONE" ALUMINUM DURING ANNEALING AT-79 C

Journal Article · Mon Dec 16 04:00:00 EST 1957 · Compt. rend.

OSTI ID:4337252

Dimitrov, O; Albert, P

A study of the annealing of''zone-melted'' Al at --79 deg C was made on three samples cold-worked in different ways. One sample was cold-worked at 20 deg C and then placed in liquid nitrogen immediately after the cold-working. The resistance was measured and it did not vary even after annealing for 100 hours at -79 deg C. The second sample was cold-worked at -18 deg C and then placed in liquid nitrogen. Annealing at -79 deg C first causes a rapid increase in the resistance, but it soon reaches a constant value which further annealing does not affect. The third sample was coldworked at the temperature of liquid nitrogen. The resistance increases rapidly as a function of the annealing time at -79 deg C. Recrystallization appears after 100 hours of annealing. No crystallization was noticed in the other samples. (J.S.R.)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-12-005992
• OSTI ID: 4337252
• Journal Information: Compt. rend., Journal Name: Compt. rend. Vol. Vol: 245
• Country of Publication: Country unknown/Code not available
• Language: French

Related Subjects

ALUMINUM
ANNEALING
COLD WORKING
ELECTRIC CONDUCTIVITY
GASES
LIQUIDS
LOW TEMPERATURE
MELTING
MINERALOGY, METALLURGY, AND CERAMICS
NITROGEN
RECRYSTALLIZATION
TEMPERATURE
ZONE MELTING
ZONES