Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Mechanics of accelerated strain hardening in harmonic-structure materials

Chatellier, Joséphine ; Sjögren, Elis LU orcid ; Ameyama, Kei and Orlov, Dmytro LU orcid (2022) 42nd Risø International Symposium on Materials Science In IOP Conference Series: Materials Science and Engineering 1249.
Abstract
Harmonic-structure (HS) design is one of the most efficient in the family of architected gradient-structure materials recently attracting increasing attention in global material science community due to leading structural performance characteristics. This work studies in situ the mechanics of plastic deformation in HS materials on the example of commercially pure nickel (Ni) during uniaxial tensile loading. It reveals that strain partitioning between ultrafine and coarse grain fractions in HS Ni commences already at early stages of plastic deformation. Slow accumulation of strain in the ultrafine-grain regions leads to the slow consumption of ductility resource, while accelerated accumulation of strain in the coarse-grain regions leads to... (More)
Harmonic-structure (HS) design is one of the most efficient in the family of architected gradient-structure materials recently attracting increasing attention in global material science community due to leading structural performance characteristics. This work studies in situ the mechanics of plastic deformation in HS materials on the example of commercially pure nickel (Ni) during uniaxial tensile loading. It reveals that strain partitioning between ultrafine and coarse grain fractions in HS Ni commences already at early stages of plastic deformation. Slow accumulation of strain in the ultrafine-grain regions leads to the slow consumption of ductility resource, while accelerated accumulation of strain in the coarse-grain regions leads to an accelerated strain hardening. These effects combined with evolving variations of strain tensor components have synergetic effect leading to the unique plastic behaviour and excellent structural performance of HS materials. (Less)
Please use this url to cite or link to this publication:
author
; ; and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
42nd Risø International Symposium on Materials Science: Microstructural variability: Processing, analysis, mechanisms and properties : 5–9 September 2022, Department of Civil and Mechanical Engineering, Technical University of Denmark, Denmark - 5–9 September 2022, Department of Civil and Mechanical Engineering, Technical University of Denmark, Denmark
series title
IOP Conference Series: Materials Science and Engineering
volume
1249
article number
012012
pages
8 pages
publisher
IOP Publishing
conference name
42nd Risø International Symposium on Materials Science
conference location
Risø, Denmark
conference dates
2022-09-05 - 2022-09-09
ISSN
1757-899X
DOI
10.1088/1757-899x/1249/1/012012
project
Topological control of microstructures for advanced material engineering
Microstructure design in metallic materials using deformation processing based techniques
Studying Deformation and Fracture in Heterogeneous 3D-Architectured Material Microstructures
PhD Project: Deformation Mechanisms in Harmonic Strucure Nickel
language
English
LU publication?
yes
id
adfc230b-068e-4606-abfe-a5f773e40649
date added to LUP
2022-08-26 20:50:22
date last changed
2025-04-04 14:42:03
@inproceedings{adfc230b-068e-4606-abfe-a5f773e40649,
  abstract     = {{Harmonic-structure (HS) design is one of the most efficient in the family of architected gradient-structure materials recently attracting increasing attention in global material science community due to leading structural performance characteristics. This work studies in situ the mechanics of plastic deformation in HS materials on the example of commercially pure nickel (Ni) during uniaxial tensile loading. It reveals that strain partitioning between ultrafine and coarse grain fractions in HS Ni commences already at early stages of plastic deformation. Slow accumulation of strain in the ultrafine-grain regions leads to the slow consumption of ductility resource, while accelerated accumulation of strain in the coarse-grain regions leads to an accelerated strain hardening. These effects combined with evolving variations of strain tensor components have synergetic effect leading to the unique plastic behaviour and excellent structural performance of HS materials.}},
  author       = {{Chatellier, Joséphine and Sjögren, Elis and Ameyama, Kei and Orlov, Dmytro}},
  booktitle    = {{42nd Risø International Symposium on Materials Science: Microstructural variability: Processing, analysis, mechanisms and properties : 5–9 September 2022, Department of Civil and Mechanical Engineering, Technical University of Denmark, Denmark}},
  issn         = {{1757-899X}},
  language     = {{eng}},
  publisher    = {{IOP Publishing}},
  series       = {{IOP Conference Series: Materials Science and Engineering}},
  title        = {{Mechanics of accelerated strain hardening in harmonic-structure materials}},
  url          = {{http://dx.doi.org/10.1088/1757-899x/1249/1/012012}},
  doi          = {{10.1088/1757-899x/1249/1/012012}},
  volume       = {{1249}},
  year         = {{2022}},
}