The Influence of Stored Energy on Grain Boundary Chemistry and Intergranular Corrosion Development in AA2024-T3 Alloy

Following our previous research, the correlation between the micro-chemistry of grain boundary and the distribution of stored energy in AA2024-T3 alloy is investigated, using the combination of transmission Kikuchi diffraction and transmission electron microscopy. It is found that the difference of...

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Published inMaterials Vol. 11; no. 11; p. 2299
Main Authors Zhang, Xinxin, Zhou, Xiaorong, Cai, Guangyi, Yu, Yang, Lu, Xueqin, Jiao, Yanbin, Dong, Zehua
Format Journal Article
LanguageEnglish
Published Switzerland MDPI 16.11.2018
MDPI AG
Subjects
aluminum
electron microscopy
intergranular corrosion
electron microscopy
intergranular corrosion
aluminum
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Summary:Following our previous research, the correlation between the micro-chemistry of grain boundary and the distribution of stored energy in AA2024-T3 alloy is investigated, using the combination of transmission Kikuchi diffraction and transmission electron microscopy. It is found that the difference of dislocation density, namely stored energy, between two neighboring grains significantly affects the micro-chemistry of the grain boundary. Further, it is revealed that intergranular corrosion development in the AA2024-T3 alloy is mainly attributed to the combined effect of grain boundary chemistry and stored energy distribution.
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ISSN:1996-1944
1996-1944
DOI:10.3390/ma11112299