Aging Behavior of YAl2p/Mg-14Li-1Al Composite

Guoqing Wu, Tao Zhang, Wei Sha, Sujie Wang, Zheng Huang

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    YAl2p/Mg-14Li-1Al composite was made by a stir-casting technique. The aging behavior of the composite was investigated using hardness test, differential scanning calorimetry, and X-ray diffraction. The results show that the microhardness variations of both the matrix alloy and its composite are related to the precipitation and decomposition of θ-MgLi2Al phase. The strengthening of the composite is from the addition of YAl2 particulates and the precipitation in matrix alloy. The former contribution is stable, but the latter is unstable and depends on the aging behavior. The addition of YAl2 particulates delays occurring of the aging behavior of composite.
    Original languageEnglish
    Pages (from-to)2958–2961
    Number of pages4
    JournalRare Metal Materials and Engineering
    Issue number12
    Publication statusPublished - Dec 2014


    • Mg-Li alloy
    • composite
    • intermetallics
    • aging behavior
    • hardness


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