Cracking behavior of cored structures

Conference · Mon Dec 31 23:00:00 EST 1990

OSTI ID:6074954

Wahid, A; Olson, D L; Matlock, D K ^[1]; Kelly, T J ^[2]

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1. Colorado School of Mines, Golden, CO (United States). Center for Welding and Joining Research
2. General Electric Aircraft Engines, Evendale, OH (United States)

The effects of compositional gradients, are considered based on a thermodynamic analysis, referred to as the Cahn-Hillard analysis, which describes the degree to which a local surface energy is modified by the presence of a composition gradient. The analysis predicts that both ductile and brittle fracture mechanisms are enhanced by the presence of a composition gradient. Data on stress corrosion cracking and fatigue crack growth in selected FCC alloys are used to illustrate the significance of microsegregation on mechanical properties.

• Research Organization: Colorado School of Mines, Golden, CO (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: FG02-87ER45308
• OSTI ID: 6074954
• Report Number(s): CONF-910909-13; ON: DE92005193
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
360105 -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
CHEMICAL REACTIONS
CHROMIUM
COPPER ALLOYS
CORROSION
CRACK PROPAGATION
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CUBIC LATTICES
ELEMENTS
FATIGUE
FCC LATTICES
FRACTURE PROPERTIES
HIGH ALLOY STEELS
IRON ALLOYS
IRON BASE ALLOYS
MECHANICAL PROPERTIES
METALS
NICKEL
NICKEL ALLOYS
SEGREGATION
STAINLESS STEELS
STEELS
STRESS CORROSION
TRANSITION ELEMENTS