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Title: In situ nanoindentation study of plastic Co-deformation in Al-TiN nanocomposites

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep06633· OSTI ID:1259289
 [1];  [2];  [3];  [2]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Materials Physics and Applications Division
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Materials Science and Technology Division
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Materials Physics and Applications Division; Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Materials Science and Engineering

We performed in situ indentation in a transmission electron microscope on Al-TiN multilayers with individual layer thicknesses of 50 nm, 5 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 easy initiation of cracks in the TiN layers. At 5 nm and below, cracking in TiN was suppressed and post mortem measurements indicated a reduction in layer thickness in both layers. The results demonstrate the profound size effect in enhancing plastic co-deformability in nanoscale metal-ceramic multilayers.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1259289
Alternate ID(s):
OSTI ID: 1321747
Report Number(s):
LA-UR-14-26958; srep06633
Journal Information:
Scientific Reports, Vol. 4; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 68 works
Citation information provided by
Web of Science

References (24)

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Cited By (9)

Micro-scale modeling of interface-dominated mechanical behavior journal October 2017
Quantifying the role of interface atomic structure in the compressive response of Ti2AlN/TiAl composite using MD simulations journal December 2018
Atomistic Simulations of Dislocation Pileup: Grain Boundaries Interaction journal May 2015
Structural modifications due to interface chemistry at metal-nitride interfaces journal November 2015
Plastic Deformation Modes of CuZr/Cu Multilayers journal March 2016
Bifurcation in deformation mechanism to overcome strength-ductility paradox in metal-ceramic multilayer thin-films journal September 2018
Growth and Stress-induced Transformation of Zinc blende AlN Layers in Al-AlN-TiN Multilayers journal December 2015
In-situ Observation of Cross-Sectional Microstructural Changes and Stress Distributions in Fracturing TiN Thin Film during Nanoindentation journal March 2016
Plastic Deformation Modes of CuZr/Cu Multilayers text January 2016

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