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Influence of Indium Trace Addition on the Precipitation Behavior in a 357 Cast Aluminum Alloy

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Abstract

Effect of indium addition on aging precipitation behavior of 357 cast alloy has been investigated by hardness measurement, differential scanning calorimetry (DSC) and TEM analysis. Age hardening results show that 0.1 wt.% indium addition to 357 cast alloy increases the peak hardness by 20 HV during aging at 160 °C. DSC and TEM analysis results show that indium addition constrains precipitation of GP zones, and enhances precipitation of phases. The possible indium atoms participating in the precipitation during aging and the large indium-vacancy binding energy can explain the effect of indium on aging behavior of 357 cast alloy.

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Acknowledgments

We gratefully acknowledge the support of Shandong Science and Research Foundation for Encourageing Exemplary Middle and Young People (Grant No. 2004BS04014).

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Authors and Affiliations

  1. Department of Material Science and Technology, Shandong Architectural University, Ji’nan, 250101, P.R. China

    Guiqing Wang, Qingzhou Sun, Zhongkui Zhao & Liu Yan

  2. Jinan Science and Technology Information Research Institute, Ji’nan, 250062, P.R. China

    Li Shan

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  1. Guiqing Wang
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  2. Qingzhou Sun
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  3. Li Shan
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  4. Zhongkui Zhao
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  5. Liu Yan
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Correspondence to Guiqing Wang.

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Wang, G., Sun, Q., Shan, L. et al. Influence of Indium Trace Addition on the Precipitation Behavior in a 357 Cast Aluminum Alloy. J. of Materi Eng and Perform 16, 752–756 (2007). https://doi.org/10.1007/s11665-007-9086-3

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  • DOI: https://doi.org/10.1007/s11665-007-9086-3

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