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11 Result(s)

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  1. No Access

    Article

    Investigation of the performance of an expandable polystyrene injector for use in the lost-foam casting process

    A significant portion of casting defects in the lost-foam casting (LFC) process can be traced back to a lack of consistency in the expandable polystyrene (EPS) foam pattern. The present study focuses on determ...

    K. F. Wali, S. H. Bhavnani, R. A. Overfelt… in Metallurgical and Materials Transactions B (2003)

  2. No Access

    Article

    Influence of directional solidification variables on the cellular and primary dendrite arm spacings of PWA1484

    A series of directional solidification experiments have been performed to elucidate the effects of thermal gradient G and growth velocity V on the solidification behavior and microstructural development of the mu...

    L. Li, R. A. Overfelt in Journal of Materials Science (2002)

  3. No Access

    Article

    Numerical modeling and experimental verification of mold filling and evolved gas pressure in lost foam casting process

    A simple mathematical model is developed to describe a lost foam casting process. Different aspects of the process, such as liquid metal flow, transient heat transfer, foam degradation and gas elimination were...

    Y. Liu, S. I. Bakhtiyarov, R. A. Overfelt in Journal of Materials Science (2002)

  4. No Access

    Article

    Electrical and thermal conductivity of A319 and A356 aluminum alloys

    A rotational contactless inductive measurement technique has been used to measure the electrical resistivity of A319 and A356 aluminum alloys at both solid and liquid states. The method is based on the phenome...

    S. I. Bakhtiyarov, R. A. Overfelt, S. G. Teodorescu in Journal of Materials Science (2001)

  5. No Access

    Article

    Influence of solidification variables on the dendrite arm spacings of Ni-based superalloys

    H. S. Whitesell, L. Li, R. A. Overfelt in Metallurgical and Materials Transactions B (2000)

  6. No Access

    Article

    Hydrodynamic modeling of fingering phenomena in curing process

    S. I. Bakhtiyarov, R. A. Overfelt in Journal of Materials Science Letters (1999)

  7. No Access

    Article

    Electrical conductivity measurements in liquid metals by rotational technique

    The rotational contactless inductive measurement technique has been developed to measure the electrical conductivity of liquid metals. This method is based on the phenomena when a conductor material rotates in...

    S. I. Bakhtiyarov, R. A. Overfelt in Journal of Materials Science (1999)

  8. No Access

    Article

    Three-zone Liquid Metals Solidification Model

    S. I. Bakhtiyarov, R. A. Overfelt in Journal of Materials Science Letters (1998)

  9. No Access

    Article

    In situ monitoring of the sintering behavior of microcomposite particles using a laser scanning micrometer

    The densification behavior of silica-coated alumina particles was investigated during sintering using a laser scanning micrometer. Traditional dilatometric techniques require contact between a push-rod and the...

    Z. Chen, S-F. Chen, R. A. Overfelt, M. F. Rose in Journal of Materials Research (1998)

  10. No Access

    Article

    Viscosity of superalloy 718 by the oscillating vessel technique

    R. A. Overfelt, C. A. Matlock, M. E. Wells in Metallurgical and Materials Transactions B (1996)

  11. No Access

    Article

    Comparison of Miogtiwiures and Magnetic Properties of Melt Spun and Plasmla Sprayed Alloys of Fe-Rare Earti-B

    Samples of Fe76RE16B8 have been prepared by melt spinning and plasma deposition. The samples were fully saturated by cooling fran 350°C in a 5 kOe field. The room temperature coercivities of these samples are rep...

    C. D. Anderson, R. A. Overfelt, W. F. Flanagan in MRS Online Proceedings Library (1986)