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Indexed by:会议论文

Date of Publication:2011-04-09

Included Journals:EI、CPCI-S、SCIE、Scopus

Volume:189-193

Page Number:3789-+

Key Words:Rotating Electromagnetic Stirring; Inoculant; Superalloy; Vacuum Investment Casting; Grain Refinement

Abstract:The effects of rotating electromagnetic stirring and inoculants on the solidification structures and properties of IN100 superalloy vacuum investment casting was studied with XRD, SEM and optical microscope. The results show that by initiating the 50Hz, 150A rotating electromagnetic stirring as soon as the molten metal was poured into the mould, which was coated with inoculant CoAl2O4, the average equiaxed grain size of IN 100 superalloy vacuum investment casting can be refined to 95 mu m and the fraction of equiaxed grains can be increased to 99 %. On condition that the grain size of K417 superalloy vacuum investment casting were refined to 95 mu m, the tensile properties at room temperature, the morphology of (gamma+gamma') eutectic and the morphology of dendrites can be greatly improved.