Abstract
The precipitation behavior of dispersoids in DC cast AA3103 alloy during heating and homogenization at 600°C has been studied by means of TEM, electrical conductivity measurement and image analysis. During heating, α-Al(Mn,Fe)Si is the first phase to precipitate in the alloy. When heated to higher temperature, long rod like and plate like Al6(Mn,Fe) dispersoids precipitate in the alloy. During homogenization, the size of Al6(Mn,Fe) dispersoids grows while a-Al(Mn,Fe)Si dispersoids dissolve quickly. The evolution of dispersoids during heat treatment is mainly controlled by nucleation, coarsening and dissolution. The size, and number density of dispersoids have been measured. The volume fraction of dispersoids formed during heating, measured from TEM images, has the same trend as the volume fraction calculated from the electrical conductivity of the alloy.
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Li, Y., Arnberg, L. (2016). Precipitation of Dispersoids in DC-Cast AA3103 Alloy during Heat Treatment. In: Grandfield, J.F., Eskin, D.G. (eds) Essential Readings in Light Metals. Springer, Cham. https://doi.org/10.1007/978-3-319-48228-6_129
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DOI: https://doi.org/10.1007/978-3-319-48228-6_129
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