TY - JOUR A1 - Fernández, R. A1 - Bokuchava, G. A1 - Toda-Caraballo, I. A1 - Bruno, Giovanni A1 - Turchenko, V. A1 - Gorshkova, Y. A1 - González-Doncel, G. T1 - Analysis of the Combined Strengthening Effect of Solute Atoms and Precipitates on Creep of Aluminum Alloys T2 - Advanced Engineering Materials N2 - The creep strengthening mechanisms in (age-hardenable) aluminum alloys are analyzed on the basis of a new microstructural study of powder samples, an analysis of a comprehensive revision of creep data from the literature, and a new modeling approach. A strategy based on the strength difference (SD) method to separate the contributions of solid solution atoms and precipitates to creep strengthening is proposed. The new methodology considers the combination of the two contributions avoiding the need of a threshold stress term in the creep equation. The contribution of both precipitates and solid solution is taken into account by means of the analysis of the lattice parameter variation with aging time. For this study, powders of two commercial AA2xxx alloys have been analyzed using diffraction methods. The experimental results are modeled using Lubarda’s approach combined with the SD method. PB - WILEY-VCH Verlag KW - Composites KW - Aluminum alloys KW - Creep models KW - Neutron Diffraction KW - Stress exponent PY - 2020 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/51055 AN - OPUS4-51055 VL - 22 IS - 4 SP - 1901355 AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany