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The paper provides an insight into the development of the micropore damage phenomena during the hydrogen ingress and egress process in a high strength aluminum alloy. For this purpose high resolution ...micro tomography scans on samples subjected to combinations of cathodic hydrogen charging and de-sorption heat treatment were carried out. From the quantitative analysis, spatial mapping of pores and particles, and a probabilistic evaluation of the 3D datasets it was conclusively shown that the development of micropore damage during hydrogen ingress – egress had a non-trivial dependence on the particle size distribution. This potentially provides rationale to mitigate the deleterious effects of hydrogen in aluminium alloys by controlling particle size and distribution in the matrix.続きを見る
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