Rationalization of activation energies for creep of dispersion strengthened aluminium materials
DOI:
https://doi.org/10.3989/revmetalm.2001.v37.i2.468Keywords:
Creep, Dispersion strengthened aluminum, Activation energy,Abstract
The high apparent activation energies for creep of various aluminum dispersion strengthened materials have been analyzed. A direct relationship between the activation energies and stress exponents for every material has been observed. The values of the Qap/nap ratios group around some constant values, Qm, which depend solely on the deformation mechanism. Therefore, Qm establishes an easy, fast and reliable criterion to determine the underlying creep deformation mechanism of any reinforced material.
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