Effect of Cu Content on Ageing Behavior for AA3104-H19 Can Body Sheet

Abstract:

AA3104 ingots with different Cu content (0.1wt.%, 0.2wt.% and 0.3wt.%) were prepared by DC casting, and then the ingots were processed to 0.26mm sheets with the method of making AA3104 can be body sheet. The AA3104-H19 sheets were aged at 180°C and the aging strengthen effect were found in the 0.2wt.%Cu and 0.3wt.%Cu alloys. Optical micrograph (OM), X-ray diffraction, high resolution transmission electron microscope were used on the sheets after different ageing time. Rod like coherency precipitates with the length about 5-10nm and the thickness about 2-3nm which were parallel to the [111] plane of the matrix was precipitated at peak aging (180°C-2h). According to the result of the thermodynamic phase diagram calculation, the precipitates should be S-Al₂CuMg phase, but the structure of the precipitates were different from the precipitates reported in 2XXX alloy.

• Periodical: Materials Science Forum (Volume 993)
• Pages: 358-364
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.993.358
• Online since: May 2020
• Authors: Yang Yang, Pi Zhi Zhao*, Xiang Xiao, Xiao Bing Zheng
• Keywords: AA3104 Sheet, Aging Strengthening, Precipitates

References

[1] Fu G. Chen W., Qian K., Effects of melt treatment technique on the metallurgical quality and mechanical properties of aluminum sheet used for can, Key Engineering Materials, 297 (2005) 482-488.

DOI: 10.4028/www.scientific.net/kem.297-300.482

[2] Li J., Arnberg L., Quantitative study on the precipitation behavior of dispersoids in DC-cast AA3003 alloy during heating and homogenization, Acta Materialia, 51(2003) 3415-3428.

DOI: 10.1016/s1359-6454(03)00160-5

[3] Zhao Y., Hu W., Yang Z., High-resolution transmission electron microscopy study on reversion of Al2CuMg precipitates in Al-Cu-Mg alloys under irradiation, Micron, 76(2015) 1-5.

DOI: 10.1016/j.micron.2015.05.009

[4] Yin M., Chen J., Wang S. Liu Z., Anisotropic and temperature-dependent growth mechanism of S-phase precipitates in Al-Cu-Mg alloy in relation with GPB zones, Trans. of Nonferrous Met. Soc. of China, 26(2016) 1-11.

DOI: 10.1016/s1003-6326(16)64082-7

[5] Wang, S.C., Starink, M.J., Precipitates and intermetallic phases in precipitation hardening Al–Cu–Mg–(Li) based alloys. Int. Mater. Rev. 50(2005) 193–215.

DOI: 10.1179/174328005x14357

[6] Zahra, A.M., Zahra, C.Y., Alfonso, C., Charai, A., Comments on cluster hardening in an aged Al–Cu–Mg alloy. Scr. Mater. 39(1998), 1553–1558.

DOI: 10.1016/s1359-6462(98)00365-0