THE TENSILE AND IMPACT STRENGTH OF ANNEALED AND WELDED 5086 ALUMINUM DOWN TO 20 K

Technical Report · Tue Oct 31 04:00:00 EST 1961

OSTI ID:4840601

Mikesell, R P; Reed, R P

Tests were made of the tensile and impact strength of annealed and welded 5086 Aluminum alloy down to 20 deg KThe behavior in mechanical properties of both the tensile and impact specimens as a function of temperature was approximately the same for the annealed and weld metals. The tensile strength of the annealed specimens increased by about 80% between 300 and 20 deg K. The yield strength increased by about 15%. The tensile strength of the weld specimens increased by about 40% between 300 and 20 deg K and the yield strength increased by about 35%. Despite the drop ib elongation between 76 and 20 deg K, the annealed tensile specimens still exhibited some plastic deformation at 20 deg K. The impact strength of the annealed specimens decreased by about 25% between 300 and 24 deg K. The impact strength of the weld specimens decreased by about 35% between the same temperatures. A relation between initial strain for discontinuous yielding and strain rate was established. (M.C.G.)

• Research Organization: National Bureau of Standards. Cryogenic Engineering Lab., Boulder, Colo.
• NSA Number: NSA-15-031196
• OSTI ID: 4840601
• Report Number(s): NP-10793
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ALUMINUM
ALUMINUM ALLOYS
ANNEALING
DEFORMATION
DUCTILITY
IMPACT SHOCK
LOW TEMPERATURE
MATERIALS TESTING
MECHANICAL PROPERTIES
METALS, CERAMICS, AND OTHER MATERIALS
TEMPERATURE
TENSILE PROPERTIES
WELDING