Volume 34, Issue 5 (September 2006)

    Strain Control During High Speed Tensile Testing

    (Received 1 December 2005; accepted 13 January 2006)

    Published Online: 2006

    CODEN: JTEOAD

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    Abstract

    Mechanical properties of transition-induced plasticity steels depend on the possible variations in the complex microstructures, such as the shape, volume fraction, stability, and chemical composition of retained austenite. The effect of retained austenite stability on martensitic transformation is important, and can be evaluated in low strain rate testing conditions by stopping the deformation during testing. However, it is much more difficult to stop the test during a high speed dynamic tensile test. Hence, it was necessary to develop a method to stop a test during high speed deformation. An instrument was designed to attach to the sample to limit the strain during high speed tensile test and the applicability of the system was evaluated over the strain rate range of 10−2 to 102 s−1. This instrument was found to be successful in allowing controlled amounts of tensile strain to be imparted to a specimen under dynamic test conditions.


    Author Information:

    Choi, I
    Professor, Korea Maritime University, Busan,

    Lee, S
    Researcher, Automotive Steel Research Center, POSCO, Kwangyang,

    Matlock, DK
    Professor, Advanced Steel Processing and Products Research Center, Colorado School of Mines, Golden, CO

    Speer, JG
    Professor, Advanced Steel Processing and Products Research Center, Colorado School of Mines, Golden, CO


    Stock #: JTE100073

    ISSN: 0090-3973

    DOI: 10.1520/JTE100073

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    Author
    Title Strain Control During High Speed Tensile Testing
    Symposium , 0000-00-00
    Committee D30