Characterization of Cu Distribution in an Al-0.3%Cu Alloy Cold Rolled to 98%

L. F. Shuai, T. L. Huang, G. L. Wu, N. Hansen, X. Huang

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In this study, the distribution of Cu element in a Al (99.9996% purity)-0.3% Cu alloy cold rolled to 98% has been characterized in detail by using three-dimensional atom probe (3DAP) and ChemiSTEM techniques. The cold rolled structure is a typical high strain lamellar structure with an average boundary spacing of 200 nm, indicating a strong role of the small amount of Cu element in stabilizing the microstructure to form the fine scale structure. A heavy segregation of Cu element in the lamellar boundaries of high angles has been observed and the Cu concentration in the boundaries can be as high as 20 times of the nominal concentration of the alloy, which is considered as the main reason for a formation of a stable nanoscale lamellar structure.
Original languageEnglish
JournalI O P Conference Series: Materials Science and Engineering
Number of pages6
Publication statusPublished - 2017
Event38th Risø International Symposium on Materials Science - Technical University of Denmark , Roskilde, Denmark
Duration: 4 Sep 20178 Sep 2017


Conference38th Risø International Symposium on Materials Science
LocationTechnical University of Denmark


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