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Effect of Ca addition and heat treatment on the A390(S)/AM60(L) interface microstructure

  • Metallic materials
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Abstract

Overcasting is a new kind of dissimilar joining technique used to produce the aluminum(solid)/magnesium(liquid) bonding bi-metallic material in this study. For the Al/Mg (A390/AM60) bi-metallic samples, the interface microstructures are the research points, which directly influence the mechanical properties. It is, therefore, of vital importance to find a method to improve the interface microstructures. This research focused on the effect of the calcium (Ca) addition in the liquid Mg alloys and the heat treatment on the A390/AM60 interface microstructures of the bi-metallic samples. The testing results showed that, with Ca addition in AM60, owing to two possible reasons, the interface microstructure and the shear strength of the A390/AM60 bi-metallic samples could be improved. The heat treatment could further improve the interface microstructure and the mechanical properties by dissolving β-Mg17Al12 into α-Mg and destroying the Mg2Si layer structure.

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Authors and Affiliations

  1. School of Materials Science and Engineering, Hefei University of Technology, Hefei, 230009, China

    Likun Ma  (马立坤), Yiqing Chen  (陈翌庆), Lihua Liu, Yong Su, Guangchen Xu & Hongjiao Fang

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  1. Likun Ma  (马立坤)
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  2. Yiqing Chen  (陈翌庆)
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  3. Lihua Liu
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  4. Yong Su
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  5. Guangchen Xu
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  6. Hongjiao Fang
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Corresponding author

Correspondence to Yiqing Chen  (陈翌庆).

Additional information

Funded by the National Natural Science Foundation of China (No.51571080)

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Ma, L., Chen, Y., Liu, L. et al. Effect of Ca addition and heat treatment on the A390(S)/AM60(L) interface microstructure. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 31, 1117–1122 (2016). https://doi.org/10.1007/s11595-016-1499-0

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  • DOI: https://doi.org/10.1007/s11595-016-1499-0

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