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Effects of pre-aging treatment on subsequent artificial aging characteristics of Al-3.95Cu-(1.32Mg)-0.52Mn-0.11Zr alloys

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Abstract

The effects of pre-aging treatments on subsequent artificial aging response were investigated by means of transmission electron microscopy observations and hardness test in age hardened Al-3.95Cu-(1.32Mg)-0.52Mn-0.11Zr alloys. In Al-3.95Cu-0.52Mn-0.11Zr alloy, when the pre-aging temperature is 25 °C, the pre-aging treatment has no evident effect on the peak hardness of subsequent artificial aging, while a positive effect (increase of peak hardness) appears when pre-aging temperature is 50 °C. However, in Al-3.95Cu-1.32Mg-0.52Mn-0.11Zr alloy, it is found that whether the pre-aging temperature is 25 °C or 50 °C, the peak artificial aging hardness is lower than that of T6 treated alloy, that is to say, pre-aging treatment has a negative effect on the peak hardness of subsequent artificial aging in the alloys.

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Authors and Affiliations

  1. School of Materials Science and Engineering, Central South University, Changsha, 410083, China

    Yi-feng Wu  (吴一凤), Ming-pu Wang  (汪明朴), Zhou Li  (李周), Fu-zhong Xia  (夏福中), Cheng-dong Xia  (夏承东), Qian Lei  (雷前) & Hong-chun Yu  (虞红春)

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  1. Yi-feng Wu  (吴一凤)
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  2. Ming-pu Wang  (汪明朴)
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  3. Zhou Li  (李周)
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  4. Fu-zhong Xia  (夏福中)
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  5. Cheng-dong Xia  (夏承东)
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  6. Qian Lei  (雷前)
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  7. Hong-chun Yu  (虞红春)
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Correspondence to Ming-pu Wang  (汪明朴).

Additional information

Foundation item: Project(2006AA03Z517) supported by the National High-tech Research and Development Program of China; Project(CSUZC2013019) supported by Open Fund for the Precision Instruments of Central South University, China

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Wu, Yf., Wang, Mp., Li, Z. et al. Effects of pre-aging treatment on subsequent artificial aging characteristics of Al-3.95Cu-(1.32Mg)-0.52Mn-0.11Zr alloys. J. Cent. South Univ. 22, 1–7 (2015). https://doi.org/10.1007/s11771-015-2487-9

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  • DOI: https://doi.org/10.1007/s11771-015-2487-9

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