DOI > 10.5291/ILL-DATA.1-01-178

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Title

Correlation between aluminum alloys fractal creep substructure parameters and neutron diffraction peak broadening on (220 planes)

Abstract

The purpose of the present experiment is to complete a previous one that was carried out at SALSA instrument in June 2019. The aim of the experiment was to investigate the evolution of dislocations substructure generated during creep of aluminum alloy as a function of creep strain for further understanding the fractal nature of these substructures. The microstrains in connection with the dislocation structure introduced during creep deformation were investigated using the planes 200, 111 and 311 in the axial and radial directions of the samples. The planes 220 were not measured in the previous experiment because of the texture effect, also present in the 111 planes, thus hindering us for a proper measurement in the time available. The idea is to use the information provided by neutron diffraction peak shape to complete the description of the evolution with creep strain of dislocations substructures in Al-Mg alloy and pure aluminum for the plane 220 in order to complete the previous results for the planes 200, 111 and 311. In pure Al, the microstrains are relaxed during creep and the dislocations structure is similar in all grains. This behavior is opposite in Al-3.85%Mg

Experimental Report

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Data Citation

The recommended format for citing this dataset in a research publication is in the following format:

R. Fernández; CABEZA Sandra; G. Carro; GONZALEZ DONCEL Gaspar and MILLAN GARCIA LAURA. (2020). Correlation between aluminum alloys fractal creep substructure parameters and neutron diffraction peak broadening on (220 planes). Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.1-01-178

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