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Dynamic constitutive behavior of Ti/TiB FGM under thermo-mechanical loading

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Abstract

An experimental investigation is conducted to evaluate the thermo-mechanical constitutive behavior of a functionally graded material (FGM) under dynamic loading. Cylindrical specimens are machined from a titanium/titanium mono-boride (Ti/TiB)-layered FGM plate using electrical discharge machining (EDM). A Split Hopkinson Pressure Bar (SHPB) apparatus with infrared (IR) spot heaters is used to investigate the effect of temperature on mechanical response of the FGM material. A series of experiments are conducted at different temperatures and the stress–strain relation for different temperatures is obtained. The material showed high thermal softening at elevated temperatures resulting in a large reduction in compressive strength and an increase in failure strain.

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Acknowledgement

The financial support of the Air Force Office of Scientific Research under grant # FA9550-06-1-0162 is gratefully acknowledged.

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Authors and Affiliations

  1. Dynamic Photomechanics Laboratory, Department of Mechanical Engineering and Applied Mechanics, The University of Rhode Island, Kingston, RI, 02881, USA

    Addis Kidane & Arun Shukla

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  1. Addis Kidane
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  2. Arun Shukla
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Correspondence to Arun Shukla.

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Kidane, A., Shukla, A. Dynamic constitutive behavior of Ti/TiB FGM under thermo-mechanical loading. J Mater Sci 43, 2771–2777 (2008). https://doi.org/10.1007/s10853-008-2520-6

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  • DOI: https://doi.org/10.1007/s10853-008-2520-6

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