Thermoelastic behavior of grain-boundary superlattices

Journal Article · Mon Dec 14 23:00:00 EST 1992 · Journal of Applied Physics; (United States)

DOI:https://doi.org/10.1063/1.351960· OSTI ID:6960419

Phillpot, S R ^[1]

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1. Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)

The thermal-expansion coefficients of superlattices of twist grain boundaries on the (100) plane in fcc Cu and Au are calculated using a generalization of the Grueneisen relation. A strong anisotropy in the in-plane and out-of-plane thermal-expansion coefficients is found. The thermal expansion of these superlattices is found to be determined from a complex interplay of the structural disorder arising from the interfaces with the associated zero-temperature lattice-parameter changes. The relationship between the thermal expansion and the elastic properties is explored.

• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6960419
• Journal Information: Journal of Applied Physics; (United States), Journal Name: Journal of Applied Physics; (United States) Vol. 72:12; ISSN 0021-8979; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
ANISOTROPY
COPPER
CRYSTAL FACES
CRYSTAL STRUCTURE
ELASTICITY
ELEMENTS
EXPANSION
GOLD
GRAIN BOUNDARIES
GRUENEISEN FORMULA
MECHANICAL PROPERTIES
METALS
MICROSTRUCTURE
SUPERLATTICES
TENSILE PROPERTIES
THERMAL EXPANSION
TRANSITION ELEMENTS