The Effect of Cold Rolling on the Hydrogen Susceptibility of 5083 Aluminum Alloy
Abstract
:1. Introduction
2. Experimental Procedure
3. Results and Discussion
4. Conclusions
- AlH3 hydrides were detected on the surface layers of 5083 aluminum alloy with and without cold rolling, meaning that hydrogen concentration was above the solubility limit of hydrogen in the aluminum matrix.
- The tensile tests revealed that the ductility of hydrogen charged 5083 aluminum alloy significantly decreased with increasing rolling deformation, for the examined charging and testing conditions. This is attributed to the higher number of micro-defects in the surface layers of the rolled alloys, which act as “trapping sites” and “diffusion paths” for hydrogen atoms.
- The ultimate tensile strength of the hydrogen charged alloy was observed to be approximately independent of the rolling process.
- All hydrogen charged samples exhibited a mixed fracture pattern with brittle transcrystalline cleavage along with ductile intergranular fracture at their surface layers, whereas only ductile intergranular fracture was observed at the bulk of the alloy.
Acknowledgments
Author Contributions
Conflicts of Interest
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Georgiou, E.P.; Celis, J.-P.; Panagopoulos, C.N. The Effect of Cold Rolling on the Hydrogen Susceptibility of 5083 Aluminum Alloy. Metals 2017, 7, 451. https://doi.org/10.3390/met7110451
Georgiou EP, Celis J-P, Panagopoulos CN. The Effect of Cold Rolling on the Hydrogen Susceptibility of 5083 Aluminum Alloy. Metals. 2017; 7(11):451. https://doi.org/10.3390/met7110451
Chicago/Turabian StyleGeorgiou, E.P., J.-P. Celis, and C.N. Panagopoulos. 2017. "The Effect of Cold Rolling on the Hydrogen Susceptibility of 5083 Aluminum Alloy" Metals 7, no. 11: 451. https://doi.org/10.3390/met7110451