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Title: Stress-dependent grain size evolution of nanocrystalline Ni-W and its impact on friction behavior

Journal Article · · Scripta Materialia

The friction behavior of ultra-nanocrystalline Ni-W coatings was investigated. A critical stress threshold was identified below which friction remained low, and above which a time-dependent evolution toward higher friction behavior occurred. Founded on established plasticity models we propose a correlation between surface grain size and applied stress that can be used to predict the critical stress separating the two friction regimes. Lastly, this interpretation of plasticity models suggests that macro-scale low and high friction regimes are respectively associated with the nano-scale mechanisms of grain boundary and dislocation-mediated plasticity.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC04-94AL85000
OSTI ID:
1257816
Report Number(s):
SAND-2016-4213J; PII: S1359646216301804
Journal Information:
Scripta Materialia, Vol. 123, Issue C; ISSN 1359-6462
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 39 works
Citation information provided by
Web of Science

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Cited By (7)

Linking microstructural evolution and macro-scale friction behavior in metals journal November 2016
Fatigue-driven acceleration of abnormal grain growth in nanocrystalline wires journal January 2019
Low friction of metallic multilayers by formation of a shear-induced alloy journal July 2019
Solids Under Extreme Shear: Friction‐Mediated Subsurface Structural Transformations journal March 2019
Low friction of metallic multilayers by formation of a shear-induced alloy text January 2019
Solids Under Extreme Shear: Friction-Mediated Subsurface Structural Transformations text January 2019
Linking microstructural evolution and macro-scale friction behavior in metals text January 2016