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Segregation of Ca at the Mg/MgO interface and its effect on grain refinement of Mg alloys
2019
IOP Conference Series: Materials Science and Engineering
It has been reported that native MgO particles in Mg alloy melts can act as heterogeneous nucleation substrates such that grain refinement of Mg alloys is achieved. A recent study showed the addition of Ca, combined with the native MgO particles, significantly improves grain refinement of Mg and its alloys. However, the mechanism underlying the grain refining phenomenon is not well understood due to the lack of direct experimental evidence. In this work, we investigated the segregation of Ca
doi:10.1088/1757-899x/529/1/012048
fatcat:4iiqzcmdfvabdn3x2jl452yjly