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Title: Strain fields induced by kink band propagation in Cu-Nb nanolaminate composites

Journal Article · · Acta Materialia

Kink band formation is a common deformation mode for anisotropic materials and has been observed in polymer matrix fiber composites, single crystals, geological formations, and recently in metallic nanolaminates. While numerous studies have been devoted to kink band formation, the majority do not consider the often rapid and unstable process of kink band propagation. In this paper, we take advantage of stable kink band formation in Cu-Nb nanolaminates to quantitatively map the local strain fields surrounding a propagating kink band during uniaxial compression. Kink bands are observed to initiate at specimen edges, propagate across the sample during a rising global stress, and induce extended strain fields in the non-kinked material surrounding the propagating kink band. Finally, it is proposed that these stress/strain fields significantly contribute to the total energy dissipated during kinking and, analogous to crack tip stress/strain fields, influence the direction of kink propagation and therefore the kink band inclination angle.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE Office of Science (SC); USDOD; Univ. of California, Santa Barbara, CA (United States)
Grant/Contract Number:
AC52-06NA25396; 12-LR-238091
OSTI ID:
1356148
Report Number(s):
LA-UR-17-20721
Journal Information:
Acta Materialia, Vol. 133, Issue C; ISSN 1359-6454
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 60 works
Citation information provided by
Web of Science

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  • Wadee, M. Ahmer; Völlmecke, Christina; Haley, Joseph F.
  • Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 370, Issue 1965 https://doi.org/10.1098/rsta.2011.0380
journal April 2012
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Cited By (6)

A review of slip transfer: applications of mesoscale techniques journal December 2017
Crack Propagation and Fracture Process Zone (FPZ) of Wood in the Longitudinal Direction Determined Using Digital Image Correlation (DIC) Technique journal July 2019
Digital Image Correlation Applications in Composite Automated Manufacturing, Inspection, and Testing journal July 2019
Dual self-organised shear banding behaviours and enhanced ductility in phase separating Zr-based bulk metallic glasses text January 2018
Room temperature deformation mechanisms of Mg/Nb nanolayered composites journal May 2018
Dual self-organised shear banding behaviours and enhanced ductility in phase separating Zr-based bulk metallic glasses journal March 2018

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