title: Deformation of a ceramic/metal interface at the nanoscale.
abstract: The mechanical response of heterophase interfaces has attracted substantial attention in recent years. Here, we utilized an in situ transmission electron microscopy (TEM) technique to isolate an individual nanoscale ceramic/metal interface and characterize its nanomechanical response. The interface, at which there was a Mg-rich segregation nanolayer between the single crystal ceramic (B4C) and the polycrystalline metal (Al alloy, AA5083), was determined to have a bond strength greater than 1.5 GPa. Bimodal failure and metallic grain rotation occurred in the metallic region, allowing the interface to accommodate a deformation strain of 5.4%. The roles of elemental segregation and nanoscale dimensions on interfacial debonding mechanisms are discussed.
authors.affiliation: Department of Chemical Engineering and Materials Science, University of California, Irvine, CA 92697, USA and Department of Chemical Engineering and Materials Science, University of California, Davis, CA 95616, USA. jmschoenung@ucdavis.edu julie.schoenung@uci.edu.
authors.forename: Lin
authors.initials: L
authors.lastname: Jiang
authors.affiliation: Department of Chemical Engineering and Materials Science, University of California, Davis, CA 95616, USA. jmschoenung@ucdavis.edu julie.schoenung@uci.edu and Department of NanoEngineering, University of California, San Diego, CA 92093, USA.
authors.forename: Tao
authors.initials: T
authors.lastname: Hu
authors.affiliation: Department of Chemical Engineering and Materials Science, University of California, Davis, CA 95616, USA. jmschoenung@ucdavis.edu julie.schoenung@uci.edu and School of Mechanical and Materials Engineering, Washington State University, WA 99164, USA.
authors.forename: Hanry
authors.initials: H
authors.lastname: Yang
authors.affiliation: Department of Chemical Engineering and Materials Science, University of California, Davis, CA 95616, USA. jmschoenung@ucdavis.edu julie.schoenung@uci.edu.
authors.forename: Dalong
authors.initials: D
authors.lastname: Zhang
authors.affiliation: Department of Chemical Engineering and Materials Science, University of California, Davis, CA 95616, USA. jmschoenung@ucdavis.edu julie.schoenung@uci.edu and Department of Mechanical Engineering, California State University, Sacramento, Sacramento, CA 95819, USA.
authors.forename: Troy
authors.initials: T
authors.lastname: Topping
authors.affiliation: Department of Chemical Engineering and Materials Science, University of California, Irvine, CA 92697, USA and Department of Chemical Engineering and Materials Science, University of California, Davis, CA 95616, USA. jmschoenung@ucdavis.edu julie.schoenung@uci.edu.
authors.forename: Enrique J
authors.initials: EJ
authors.lastname: Lavernia
authors.affiliation: Department of Chemical Engineering and Materials Science, University of California, Irvine, CA 92697, USA and Department of Chemical Engineering and Materials Science, University of California, Davis, CA 95616, USA. jmschoenung@ucdavis.edu julie.schoenung@uci.edu.
authors.forename: Julie M
authors.initials: JM
authors.lastname: Schoenung