Abstract
This work focuses in investigating the effect of cold deformation on the cathodic hydrogen charging of 5083 aluminum alloy. The aluminium alloy was submitted to a cold rolling process, until the average thickness of the specimens was reduced by 7% and 15%, respectively. A study of the structure, microhardness, and tensile properties of the hydrogen charged aluminium specimens, with and without cold rolling, indicated that the cold deformation process led to an increase of hydrogen susceptibility of this aluminum alloy.
Highlights
The growing importance of hydrogen among the alternative energy sources has given rise to new studies concerning its effect on the technological properties of metallic alloys [1,2,3,4]
The presence of aluminum hydride in the surface layers of the hydrogen charged aluminum alloy was a result of increased hydrogen concentration, which excided the solubility limit of hydrogen in the aluminum matrix (0.0001 at % [20])
Charging conditions: 30 mA/cm2 for 6 h. From this experimental work on the effect of cold rolling on the hydrogen uptake of 5083. From this experimental work on the effect of cold rolling on the hydrogen uptake of aluminum alloy, the following conclusions were made: 5083 aluminum alloy, the following conclusions were made: 1. AlH3 hydrides were detected on the surface layers of 5083 aluminum alloy with and without
Summary
The growing importance of hydrogen among the alternative energy sources has given rise to new studies concerning its effect on the technological properties of metallic alloys [1,2,3,4]. Among these materials, aluminum alloys are extensively used as structural materials in the nuclear industry, and are continuously exposed to harsh conditions that involve the interaction of hydrogen uptake and mechanical loading. HELP theory suggests that hydrogen uptake increases both the density and mobility of dislocations
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