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    Probing nanoscale damage gradients in ion-irradiated metals using spherical nanoindentation 

    Pathak, Siddhartha; Kalidindi, Surya R.; Weaver, Jordan S.; Wang, Yongqiang; Doerner, Russell P.; Mara, Nathan A. (2017)
    We discuss and demonstrate the application of recently developed spherical nanoindentation stress-strain protocols in characterizing the mechanical behavior of tungsten polycrystalline samples with ion-irradiated surfaces. ...
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    Strong, Ductile, and Thermally Stable bcc-Mg Nanolaminates 

    Pathak, Siddhartha; Velisavljevic, Nenad; Baldwin, Kevin J.; Jain, Manish; Zheng, Shijian; Mara, Nathan A.; Beyerlein, Irene J. (2017)
    Magnesium has attracted attention worldwide because it is the lightest structural metal. However, a high strength-to-weight ratio remains its only attribute, since an intrinsic lack of strength, ductility and low melting ...