Internal friction spectra of some AlCu alloys

Mahmoud, S. A.; Semary, M. A.; Farid, Z.

doi:10.1002/pssa.2210650160

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2008

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“…Internal friction measurements can reveal the relaxation processes induced either by the dissolution of foreign atoms in the matrix or by the formation of the incoherent precipitates in dilute alloys (7).…”

Section: Introductionmentioning

confidence: 99%

Effect of irradiation and pre-ageing temperature on the mechanical properties of Al–Si alloy

El-Khalek

El‐Salam

2008

Radiation Effects and Defects in Solids

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Al-1wt.%Si alloy samples in the solid solution state were irradiated with doses of gamma rays up to 1.75 MGy for 2 h in the temperature range from 423 to 553 K. Induced variations in structure, mechanical and electrical properties were traced by suitable techniques. Observed changes in the measured parameters, internal friction Q −1 , thermal diffusivity D th , dynamic elastic modulus Y and resistivity, ρ, were explained in terms of the role and mode of interaction of lattice defects in irradiated and thermally treated samples. Composition inhomogeneity and variations in mass distribution in the matrix were also considered. The structure identification of the samples was carried out by using conventional X-ray diffraction techniques and transmission electron microscopy micrographs.

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Section: Introductionmentioning

confidence: 99%