Deformation of a ceramic/metal interface at the nanoscale. Academic Article uri icon

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.

published proceedings

  • Nanoscale

author list (cited authors)

  • Jiang, L., Hu, T., Yang, H., Zhang, D., Topping, T., Lavernia, E. J., & Schoenung, J. M.

complete list of authors

  • Jiang, Lin||Hu, Tao||Yang, Hanry||Zhang, Dalong||Topping, Troy||Lavernia, Enrique J||Schoenung, Julie M

publication date

  • May 2016