Accession Number:

ADA067991

Title:

Load Relaxation Studies of a Metallic Glass.

Descriptive Note:

Technical progress rept.,

Corporate Author:

CORNELL UNIV ITHACA N Y DEPT OF MATERIALS SCIENCE AND ENGINEERING

Personal Author(s):

• Hadnagy,T. D.
• Krenitsky,D. J.
• Ast,D. G.
• Li,Che-Yu

Report Date:

1977-09-01

Pagination or Media Count:

17.0

Abstract:

This note reports experimental results of load relaxation studies of a commercial metallic glass METGLAS 2826 as a function of temperature. The data suggests that metallic glasses exhibit deformation behavior with flow laws similar to those governing plastic deformation in crystalline solids. The lack of appreciable work hardening on annealed material and the identification of an elastic component are also indicated by the experimental observation. The deformation properties of metallic glasses were reviewed recently by Davis. He discussed the possiblity that metallic glasses exhibit deformation properties governed by dislocation mechanisms and show little capacity for work hardening. Recently Murata and co-workers showed that non-elastic deformation in metallic glasses contains two separate components a time dependent and recoverable anelastic component and a time dependent and non-recoverable plastic component. They argued, however, based on their observations that metallic glasses can be hardened by straining.

Descriptors:

• *GLASS
• *METALLIC TEXTILES
• *STRESS RELAXATION
• PLASTIC DEFORMATION
• TEMPERATURE
• ANNEALING
• LOADS(FORCES)
• CRYSTALS
• IRON
• NICKEL
• BORON
• QUATERNARY COMPOUNDS
• PHOSPHORUS
• HARDENING
• EQUATIONS OF STATE

Subject Categories:

• Ceramics, Refractories and Glass
• Metallurgy and Metallography
• Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE