Application of Laser-based Resonant Ultrasound Spectroscopy to Study Texture in Copper

Journal Article · Thu Mar 01 00:00:00 EST 2012 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3692386· OSTI ID:1038922

Hurley, David H; Reese, Stephen J; FarzbodFarz\, Farhad

Copper specimens having two distinct grain microstructures are investigated using laser resonant ultrasound spectroscopy (LRUS). One consists of randomly oriented crystallites and exhibits isotropic elastic behavior (two elastic constants) and the other is highly textured by rolling and exhibits anisotropic elastic behavior (three elastic constants). The elastic constants are measured using electron backscatter diffraction, LRUS, and time domain laser ultrasound (LU). The elastic constants for the isotropic sample obtained using EBSD, LU and LRUS agree closely. However, for the anisotropic sample, there is considerable disagreement between results obtained using LRUS and results obtained using LU and EBSD. Analysis revels that increasing the dimensionality of the modulus space leads to questions of whether the solution is unique to within experimental error. The consequence is that small uncertainties in the assumed symmetry of the elastic stiffness tensor for anisotropic materials can lead to large uncertainties in the calculated elastic constants.

• Research Organization: Idaho National Lab. (INL), Idaho Falls, ID (United States)
• Sponsoring Organization: DOE - NE
• DOE Contract Number: DE-AC07-05ID14517
• OSTI ID: 1038922
• Report Number(s): INL/JOU-11-23752; JAPIAU; TRN: US1202047
• Journal Information: Journal of Applied Physics, Vol. 111, Issue 5; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
ANISOTROPY
BACKSCATTERING
COPPER
ELASTICITY
ELECTRON DIFFRACTION
FLEXIBILITY
GRAIN SIZE
LASER RADIATION
MICROSTRUCTURE
RANDOMNESS
RESONANCE
ROLLING
SPECTROSCOPY
SYMMETRY
TEXTURE
ULTRASONIC TESTING
copper
laser ultrasound
resonant ultrasound spectroscopy
texture