OS1207 放射光μCTイメージングを用いた腐食疲労損傷の観察(X線,放射光,中性子による材料・材料強度評価,オーガナイズドセッション)

概要

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Pitting corrosion of aluminum alloy serve as nuclei for subsequent fatigue cracking and significantly reduce the serviceable life of structure. In the present study, Micro computed tomography (μCT) with synchrotron radiation of SPring-8 was applied to observe and evaluate the corrosion and corrosion fatigue of aluminum alloy. The compact corrosion fatigue testing machine was developed for flitigue testing by the side of a beam line of SPring-8. The growth of pitting corrosion could be observed nondestructively by using SR CT imaging. It was found that pitting corrosion results from the interactions of the matrix with clusters of particles and inclusions. The growth of pits proceeds inside specimen in the early stage.
2009-07-24