| 1 | A transmission electron microscopy study of microscopic causes for localized-corrosion morphology variations in the AA7055 Al alloy显示文摘By Using(scanning) transmission electron microscopy, localized-corrosion morphology variations of the AA7055 AlZn(Cu)Mg alloy with different thermal processes and their underlying microscopic causes were investigated systematically. Our study shows that the corrosion resistance of the nanoscale precipitates varies with their structure type and Cu-content. Just like the Al-matrix, the early-stage precipitates are corrosion resistant, as compared with the η_p/η-precipitates without high Cu-content. With a high Cucontent, however, the η-precipitates become most corrosion resistant among all phases involved. Hence,tailoring the precipitate microstructure and chemistry though thermal processes may change the overall corrosion morphology and improve corrosion resistance property of the alloy. | X.B. Yang J.H. Chen G.H. Zhang L.P. Huang T.W. Fan Y. Ding X.W. Yu | 2018 | Journal of Materials Science & Technology2018，34，10： | 4 |
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