Journal
JOM
Volume 68, Issue 1, Pages 143-150Publisher
SPRINGER
DOI: 10.1007/s11837-015-1542-1
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Funding
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences
- National Nuclear Security Administration of the U.S. Department of Energy [DE-AC52-06NA25396]
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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.
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