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- Title
Interface-Driven Plasticity in Metal-Ceramic Nanolayered Composites: Direct Validation of Multiscale Deformation Modeling via In Situ Indentation in TEM.
- Authors
Mara, Nathan; Li, Nan; Misra, Amit; Wang, Jian
- Abstract
We present in situ indentation in a transmission electron microscope on Al-TiN multilayers with individual layer thicknesses of 50 nm and 2.7 nm to explore the effect of length scales on the plastic co-deformability of a metal and a ceramic. At 50 nm, plasticity was confined to the Al layers with brittle fracture in the TiN layers. At 5 nm and below, cracking in TiN was suppressed with co-deformation evident in both layers. The in situ transmission electron microscopy (TEM) straining results demonstrate a profound size effect in enhancing plastic co-deformability in nanoscale metal-ceramic multilayers, as well as direct validation of ex situ and 3-D elastic-plastic deformation models.
- Subjects
NANOCOMPOSITE materials; CERAMIC metals; MATERIAL plasticity; TITANIUM nitride; DEFORMATIONS (Mechanics); TRANSMISSION electron microscopy; INTERFACES (Physical sciences)
- Publication
JOM: The Journal of The Minerals, Metals & Materials Society (TMS), 2016, Vol 68, Issue 1, p143
- ISSN
1047-4838
- Publication type
Article
- DOI
10.1007/s11837-015-1542-1