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- W4385487101 abstract "Abstract In this paper, Al-7%Si-0.6%Mg-X%Ce (X = 0, 0.1 and 0.2) casting alloys were prepared by vacuum induction furnace. Using optical microscopy (OM), x-ray diffractometer (XRD), scanning electron microscopy (SEM), energy spectrometry (EDS), differential scanning calorimetry (DSC) and transmission electron microscopy (TEM), the microstructures of the experimental alloys were studied, and the mechanism of refinement and modification of the alloy were discussed. Results show that for Al-Si alloy, AlCeSi 2 is formed by adding cerium element into aluminum alloy. Furthermore, with the increase of cerium addition, α - Al dendrite arms decrease, the AlCeSi 2 was formed, and the growth of iron-rich phase was hindered, respectively. Also, the areas of eutectic of α -Al + Si were decreased, due to the supercooling increasing of the alloys. In addition, the α -Al grains were refined, because existing of heterogeneous nucleation core supplied by AlCeSi 2 , and component supercooling caused by cerium adding. Moreover, the formation of AlCeSi 2 consumed to some silicon elements, which leaded to size and amount reduction of eutectic silicon. The formation of high-density stacking fault can induce silicon modified, and the formed high-density stacking fault was produced by cerium as impurity element into silicon." @default.
- W4385487101 created "2023-08-03" @default.
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- W4385487101 date "2023-08-01" @default.
- W4385487101 modified "2023-09-25" @default.
- W4385487101 title "Study on mechanism of refining and modifying in Al-Si-Mg casting alloys with adding rare earth cerium" @default.
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- W4385487101 doi "https://doi.org/10.1088/2053-1591/acece0" @default.
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