Burning loss regularity and precise control technology of aluminum-titanium elements in electroslag remelting process of GH4169D alloy
Al and Ti are the strengthening phase forming elements of superalloy.The precise and stable control of Al and Ti is crucial for ensuring the consistency of alloy bar properties and batch stability.The chemical properties of Al and Ti elements are highly reactive,making them prone to burning during the electroslag remelting process,which leads to uneven distribution of Al and Ti contents along the axial direction.This leads to fluctuations in the structure and properties of the ingot.The burning loss regularity of Al and Ti during electroslag remelting was sys-tematically investigated under various slag conditions with GH4169D alloy as the research subject.Additionally,the impact and mechanism of smelting temperature,slag composition,and initial electrode Al and Ti element contents on the equilibrium contents of Al and Ti were analyzed based on a thermodynamic model.By designing the slag sys-tem,precise control of Al and Ti elements in GH4169D electroslag ingot was achieved.
GH4169Delectroslag remeltingAl and Ti elementsburning loss regularity and mechanismcontrol technology
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