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Title: On the origins of hardness of Cu–TiN nanolayered composites

Journal Article · · Scripta Materialia
 [1];  [1];  [2];  [1];  [1];  [1];  [3];  [1];  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Swiss Federal Labs for Materials Science and Technology, Thun (Switzerland)
  3. Univ. of Michigan, Ann Arbor, MI (United States)

We investigated the mechanical response of physical vapor deposited Cu–TiN nanolayered composites of varying layer thicknesses from 5 nm to 200 nm. Both the Cu and TiN layers were found to consist of single phase nanometer sized grains. The grain sizes in the Cu and TiN layers, measured using transmission electron microscopy and X-ray diffraction, were found to be comparable to or smaller than their respective layer thicknesses. Indentation hardness testing revealed that the hardness of such nanolayered composites exhibits a weak dependence on the layer thickness but is more correlated to their grain size.

Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1227667
Alternate ID(s):
OSTI ID: 1251494
Report Number(s):
LA-UR-15-25383; PII: S1359646215002985
Journal Information:
Scripta Materialia, Vol. 109, Issue C; ISSN 1359-6462
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 21 works
Citation information provided by
Web of Science

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Elevated and cryogenic temperature micropillar compression of magnesium–niobium multilayer films journal May 2019

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