Abstract
The peak broadening in neutron diffraction experiments on tensile specimens of pure Al (99.8%) and an Al–Mg alloy pre-deformed at different creep strains is analysed. These results are combined with the kernel angular misorientation of electron backscatter diffraction data from the creep-deformed microstructures. It is found that differently oriented grains possess different microstrains. These microstrains vary with creep strain in pure Al, but not in the Al–Mg alloy. It is proposed that this behaviour can explain the power-law breakdown in pure Al and the large creep strain observed in Al–Mg. The present findings further corroborate a description of the creep-induced dislocation structure as a fractal, predicated on previous work.
Funder
Ministerio de Economía y Competitividad, Agencia Estatal de Investigación
Comunidad de Madrid
Publisher
International Union of Crystallography (IUCr)
Subject
General Biochemistry, Genetics and Molecular Biology
Cited by
1 articles.
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