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Microstructures and mechanical properties of Al-Cu-Mn alloy with La and Sm addition

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Abstract

The effect of single addition of La or Sm on the microstructures and mechanical properties of an Al-Cu-Mn alloy were investigated by microstructure characterization and tensile test. The results show that addition of La or Sm into the Al-Cu-Mn alloy can remarkably increase the density of θ′ phase and refine the microstructure, and thus, improves the mechanical properties at room temperature. La addition results in a more considerable increase in the density and refinement of θ′ phase than Sm addition. La addition has a more significant contribution on the mechanical properties of the Al-Cu-Mn alloy than Sm addition. In addition, a new phase of Al6Cu6La is formed in the Al-Cu-Mn alloy with La addition.

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Authors and Affiliations

  1. State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an, 710072, Shaanxi, PR China

    Zhongwei Chen, Pei Chen & Cuiying Ma

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  1. Zhongwei Chen
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  2. Pei Chen
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  3. Cuiying Ma
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Correspondence to Zhongwei Chen.

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Chen, Z., Chen, P. & Ma, C. Microstructures and mechanical properties of Al-Cu-Mn alloy with La and Sm addition. Rare Metals 31, 332–335 (2012). https://doi.org/10.1007/s12598-012-0515-6

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  • DOI: https://doi.org/10.1007/s12598-012-0515-6

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