Abstract
Static and cyclic creep tests of Al–15 vol% TiB2 in situ composite were carried out at 573–623 K. The values of apparent stress exponent and activation energy for cyclic creep of the composite were much higher than that for static creep. Furthermore, the cyclic creep rate tended to decrease with increasing percentage of unloading amount but was independent of the loading frequencies under the frequency ranges investigated. Finally, the true stress exponent of the composite was equal to 8, and the true activation energy was close to the value for the lattice self-diffusion of aluminum by incorporating a threshold stress for the analysis.
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Ma, Z.Y., Tjong, S.C. & Li, S.X. Static and cyclic creep behavior of in situTiB2 particulate reinforced aluminum composite. Journal of Materials Research 14, 4541–4550 (1999). https://doi.org/10.1557/JMR.1999.0616
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DOI: https://doi.org/10.1557/JMR.1999.0616