Techniques for reducing macrosegregation in cast metals are disclosed. Techniques include providing an eductor nozzle capable of increasing mixing in the fluid region of an ingot being cast. Techniques also include providing a non-contact flow control device to apply pressure and/or mix the molten metal introduced into the mold cavity. Non-contact flow control devices may be based on permanent magnets or electromagnets. The techniques may further include actively cooling and mixing the molten metal prior to introducing the molten metal into the mold cavity.
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