2 April 2008 Elastic properties and auxetic behavior of Galfenol for a range of compositions
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Abstract
Iron-gallium alloys (known as Galfenol), are one of only a few metal alloys known to exhibit large auxetic or negative Poisson's ratio behavior. The mechanical properties, including the auxeticity, of Galfenol are strongly dependent on the composition. This research seeks to measure the elastic properties of Galfenol through a range of practical compositions in order to create a thorough database as well as present trends in the elastic properties. This is achieved through tensile testing of single-crystal Galfenol dog-bone-shaped specimens of varying compositions. For each composition, there is one specimen aligned along the [100] crystallographic axis and one aligned along the [110] axis. This project will enable future researchers to confidently know the elastic properties of the alloy, as well as enable them to select the alloy with optimum elastic properties for their applications.
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Holly M. Schurter, Holly M. Schurter, Alison B. Flatau, Alison B. Flatau, } "Elastic properties and auxetic behavior of Galfenol for a range of compositions", Proc. SPIE 6929, Behavior and Mechanics of Multifunctional and Composite Materials 2008, 69291U (2 April 2008); doi: 10.1117/12.776173; https://doi.org/10.1117/12.776173
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