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Damage Development in Aluminum 2050 Alloy during High-Temperature Loading Studied by Synchrotron Diffraction and Tomography

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Abstract:

The formability of Aluminum 2050 alloy is critical for manufacturing large and thick components while maintaining its outstanding performance. To link the damage development during high-temperature loading with the alloy microstructure evolution, a time resolved tensile loading experiment at 480 °C was performed on this alloy using synchrotron diffraction and tomography, i.e. diffraction contrast tomography (DCT) to provide 3D grain maps and phase contrast tomography (PCT) to characterize pores and intermetallics. The evolution of both was quantified as a function of macroscopic strain up to 20.15%. Three pore formation mechanisms were identified: growth from pre-existing pores, fracture of the intermetallics, and nucleation of new pores. The characteristics of the pore evolution are linked with the grain structure characterized by DCT. Additionally, the grain maps reconstructed for initial and final strained states show newly recrystallized grains, indicating the presence of dynamic recrystallization. To exclude the possible explanation by annealing recrystallization, an extra annealing experiment was performed and no recrystallized grains were observed. A comprehensive insight into linking the damage development with the microstructure evolution under high-temperature deformation has been obtained by using synchrotron grain mapping techniques and tomography.

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Periodical:

Materials Science Forum (Volume 1175)

Pages:

77-83

DOI:

https://doi.org/10.4028/p-Mr1BVv

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Online since:

January 2026

Authors:

Gisele Fernandes Chaves Macieira*, Pierre Lhuissier, Luc Salvo, Haixing Fang

Keywords:

Damage Formation, Diffraction Contrast Tomography, Grain Mapping, Intermetallics, Recrystallization

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© 2026 Trans Tech Publications Ltd. All Rights Reserved

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