INVESTIGATIONS ON THE PLASTICITY OF SINGLE CRYSTALS OF NICKEL-COBALT ALLOYS

Journal Article · Wed Apr 01 04:00:00 EST 1959 · Z. Metallk.

OSTI ID:4239063

Meissner, J

Single crystals of nickel and nickel-cobalt alloys with cobalt contents up to 40% were deformed at room temperature and at 90 deg K. The shear stress- shear strain curves show the three stages that are characteristic for facc centered cubic metals. The dependence of the work-hardening parameters on concentration is due only to the variation of the stacking-fault energy which decreases with increasing cobalt content. The critical shear stress, the extent of the easy glide stage, and the stress at the beginning of the third stage increase with decreasing temperature and increasing cobalt content, whereas the slope of the work-hardening curve in the second stage of linear hardening is independent of temperature and concentration. This is to be expected from extrapolating the tensile propenties of pure metals to materials of low stacking- fault energies. (auth)

• Research Organization: Max-Planck-Institut fur Metallforschung, Stuttgart
• NSA Number: NSA-13-015423
• OSTI ID: 4239063
• Journal Information: Z. Metallk., Journal Name: Z. Metallk. Vol. Vol: 50
• Country of Publication: Country unknown/Code not available
• Language: German

Related Subjects

COBALT
COBALT ALLOYS
DEFECTS
DEFORMATION
DIAGRAMS
DUCTILITY
LOW TEMPERATURE
METALLURGY AND CERAMICS
MONOCRYSTALS
NICKEL
NICKEL ALLOYS
QUANTITY RATIO
SHEAR
STACKING FAULTS
STRESSES
TEMPERATURE
TEMPERING
TENSILE PROPERTIES
VARIATIONS