Interface cavitation damage in polycrystalline copper

Journal Article · Mon Jun 01 00:00:00 EDT 1992 · Acta Metallurgica; (United States)

DOI:https://doi.org/10.1016/0956-7151(92)90413-9· OSTI ID:7280025

Field, D P; Adams, B L ^[1]

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1. Yale Univ., New Haven, CT (United States). Dept. of Mechanical Engineering

In this paper determination of an interface damage function (IDF), from a stereological procedure similar to that presented by Hillard is described. The mathematical and experimental simplicity of the method is utilized in measuring an IDF for polycrystalline copper crept at 0.6T{sub m} under uniaxial tension. Whereas previous work focussed on a five parameter description of the local state of a grain boundary, the domain of the IDF is increased to eight degrees of freedom in the present study to include the complete geometrical description of grain boundary structure. The resulting functions identify certain types of grain boundaries which were preferentially damaged. Most of the damage occurred on interfaces oriented nearly normal to the principal stress axis. Some relatively small angle boundaries demonstrated a surprising propensity to cavitate as did certain special boundaries distinguished by a group multiplicity in misorientation space greater than one. A sequence of two dimensional projections through the eight-dimensional domain of the IDF is shown to identify a number of interface structures which are readily damaged.

• OSTI ID: 7280025
• Journal Information: Acta Metallurgica; (United States), Vol. 40:6; ISSN 0001-6160
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COPPER
CAVITATION
GRAIN BOUNDARIES
INTERFACES
STRESS ANALYSIS
POLYCRYSTALS
CALCULATION METHODS
DEGREES OF FREEDOM
EXPERIMENTAL DATA
FRACTURE MECHANICS
GEOMETRY
INTERGRANULAR CORROSION
PARAMETRIC ANALYSIS
TWO-DIMENSIONAL CALCULATIONS
CHEMICAL REACTIONS
CORROSION
CRYSTAL STRUCTURE
CRYSTALS
DATA
ELEMENTS
INFORMATION
MATHEMATICS
MECHANICS
METALS
MICROSTRUCTURE
NUMERICAL DATA
TRANSITION ELEMENTS
360105* - Metals & Alloys- Corrosion & Erosion