title: Nanometallic glasses: size reduction brings ductility, surface state drives its extent.
abstract: We report tensile experiments on Ni80P20 metallic glass samples fabricated via a templated electroplating process and via focused ion beam milling, which differed only in their surface energy states: Ga-ion-irradiated and as-electroplated. Molecular dynamics simulations on similar Ni80Al20 systems corroborate the experimental results, which suggest that the transition from brittle to ductile behavior is driven by sample size, while the extent of ductility is driven by surface state.
authors: Division of Engineering and Applied Sciences and ‡Department of Chemistry and Chemical Engineering, California Institute of Technology , Pasadena, California 91106, United States.
authors: D Z
authors: DZ
authors: Chen
authors: D
authors: D
authors: Jang
authors: K M
authors: KM
authors: Guan
authors: Q
authors: Q
authors: An
authors: W A
authors: WA
authors: Goddard
authors: J R
authors: JR
authors: Greer
mesh_terms: D000535:Aluminum / Q000737:chemistry; D005708:Gallium / Q000737:chemistry; D005898:Glass / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D056004:Molecular Dynamics Simulation; D009532:Nickel / Q000737:chemistry; D013499:Surface Properties
chemical_list: D009532:Nickel; D005708:Gallium; D000535:Aluminum