Fabrication of Metal-Based Functionally Graded Grinding Wheel by a Centrifugal Mixed-Powder Method

Eri Miura-Fujiwara; Hisashi Sato; Motoko Yamada; Yoshimi Watanabe

doi:10.4028/www.scientific.net/MSF.706-709.661

Paper Titles

Fabrication of Injection Moulded 304L Stainless Steels Reinforced with Tungsten Carbide Particles
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Composite 316L+Al₂O₃ for Application in Medicine
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Evaluation of Cutting Process on the Tensile and Fatigue Strength of CFRP Composites
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Investigating the Potential of TiB₂-Based Composites with Ti and Fe Additives as Wettable Cathode
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Fabrication of Metal-Based Functionally Graded Grinding Wheel by a Centrifugal Mixed-Powder Method
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Microstructure and Superconductive Property of MgB₂/Al Composite Materials
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Degradation Mechanism of Polycrystalline Silicon Carbide Fiber due to Air-Exposure at High Temperatures
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Microstructure of the New Route Wire Fabrication of V₃Ga Compound Superconducting Wire Using High Ga Content Cu-Ga/V Precursor Composite Material
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Forming Potential of Steel/Polymer/Steel Sandwich Composites with Local Plate Inserts
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Fabrication of Metal-Based Functionally Graded Grinding Wheel by a Centrifugal Mixed-Powder Method

Abstract:

Metal-bonded diamond grinding wheel was fabricated by a centrifugal mixed-powder method. The centrifugal mixed-powder method is a novel and effective casting process to obtain functionally graded material (FGM). At the beginning, we performed fundamental experiments using Al-Si alloy system for the purpose of knowing the migration behavior of mixed-powder under centrifugal force. Al-Si hypereutectic alloyed-powder or mixed-powder of Al and Si particles was placed into the mold, and then Al molten metal was cast under a centrifugal force. Cross sectional microstructure observation and quantitative analysis of Si content were conducted using an electron probe microanalyzer. Amount of Si decreased with receding from a mixed-powder region. Si concentration gradient in the sample fabricated Al-Si powder was smaller than the one fabricated using mixed-powder of Al and Si particles. Subsequently, φ 20 mm Cu/diamond grinding wheel was fabricated by the casting method. Graded diamond distribution was successfully obtained.