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1Effect of Electromagnetic Stirring on Solidification Structure of Incoloy 825 Superalloy显示文摘Superalloy Inconel 825 has been extensively used in chemical industry and transportation industry due to its excellent creep rupture strength and prominent corrosion resistant properties under various circumstances.However,the mass production of this alloy by continuous casting method is restricted because of the serious macrosegregation and coarse grains in the billet.In current,a linear travelling magnetic field was introduced in the solidification process of Inconel 825 with the aim of changing the fmal microstructure by electromagnetic stirring(EMS)force.The results have indicated that the dendrite structure of Incoloy 825 is refined obviously with applying EMS,and the mechanism of dendrite refinement is presumed to the introduction of a forced convection within the solidifying melt.Moreover,The number and the size of precipitated phases including carbide and nitride were found to be significantly reduced with EMS,a phenomenon on the reduction of interdendritic segregation of titanium and molybdenum was simultaneously observed,which demonstrated that he release of interdendritic segregation by EMS inhibits the growth dynamic of carbide and nitride from the melt.LI Rui WANG En-gang JIA Peng LU Hui HE Ji-cheng 2012Journal of Iron and Steel Research(International)2012,19,S1:0
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