Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Stress partitioning in harmonic structure materials at the early stages of tensile loading studied in situ by synchrotron X-ray diffraction

Sjögren-Levin, Elis LU orcid ; Pantleon, Wolfgang ; Ahadi, Aylin LU ; Hegedüs, Zoltan ; Lienert, Ulrich ; Tsuji, Nobuhiro ; Ameyama, Kei and Orlov, Dmytro LU orcid (2023) In Scripta Materialia 226.
Abstract

In situ X-ray diffraction was employed to gain insight into the tensile deformation behavior of harmonic structure (HS) nickel. HS consists of a continuous network of fine grains encompassing islands of coarse grains. With the aid of a newly developed separation algorithm, the X-ray diffraction signals from coarse and fine grains were analyzed separately. Using line profile analysis, the evolution of local stresses and microstrains in the respective grain fractions were examined. Several stages were identified during yielding and the onset of plastic deformation in HS nickel. The mechanical behavior of the individual fractions was related to the macroscopic behavior of the HS and compared to that of homogeneous counterparts with similar... (More)

In situ X-ray diffraction was employed to gain insight into the tensile deformation behavior of harmonic structure (HS) nickel. HS consists of a continuous network of fine grains encompassing islands of coarse grains. With the aid of a newly developed separation algorithm, the X-ray diffraction signals from coarse and fine grains were analyzed separately. Using line profile analysis, the evolution of local stresses and microstrains in the respective grain fractions were examined. Several stages were identified during yielding and the onset of plastic deformation in HS nickel. The mechanical behavior of the individual fractions was related to the macroscopic behavior of the HS and compared to that of homogeneous counterparts with similar average grain sizes as the grain fractions. The analysis reveals that the stress partitions between the grain fractions and that the plastic deformation of coarse grains within the HS are constrained by the network of fine grains.

(Less)
Please use this url to cite or link to this publication:
author
; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Harmonic structure, Heterogeneous structure, Stress partitioning, Synchrotron radiation, X-ray diffraction
in
Scripta Materialia
volume
226
article number
115186
publisher
Elsevier
external identifiers
  • scopus:85146242846
ISSN
1359-6462
DOI
10.1016/j.scriptamat.2022.115186
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
language
English
LU publication?
yes
additional info
Publisher Copyright: © 2022 The Author(s)
id
c0cdc991-e83e-429d-9150-50a0ba78c39b
date added to LUP
2023-01-28 22:17:53
date last changed
2024-01-11 09:08:31
@article{c0cdc991-e83e-429d-9150-50a0ba78c39b,
  abstract     = {{<p>In situ X-ray diffraction was employed to gain insight into the tensile deformation behavior of harmonic structure (HS) nickel. HS consists of a continuous network of fine grains encompassing islands of coarse grains. With the aid of a newly developed separation algorithm, the X-ray diffraction signals from coarse and fine grains were analyzed separately. Using line profile analysis, the evolution of local stresses and microstrains in the respective grain fractions were examined. Several stages were identified during yielding and the onset of plastic deformation in HS nickel. The mechanical behavior of the individual fractions was related to the macroscopic behavior of the HS and compared to that of homogeneous counterparts with similar average grain sizes as the grain fractions. The analysis reveals that the stress partitions between the grain fractions and that the plastic deformation of coarse grains within the HS are constrained by the network of fine grains.</p>}},
  author       = {{Sjögren-Levin, Elis and Pantleon, Wolfgang and Ahadi, Aylin and Hegedüs, Zoltan and Lienert, Ulrich and Tsuji, Nobuhiro and Ameyama, Kei and Orlov, Dmytro}},
  issn         = {{1359-6462}},
  keywords     = {{Harmonic structure; Heterogeneous structure; Stress partitioning; Synchrotron radiation; X-ray diffraction}},
  language     = {{eng}},
  month        = {{03}},
  publisher    = {{Elsevier}},
  series       = {{Scripta Materialia}},
  title        = {{Stress partitioning in harmonic structure materials at the early stages of tensile loading studied in situ by synchrotron X-ray diffraction}},
  url          = {{http://dx.doi.org/10.1016/j.scriptamat.2022.115186}},
  doi          = {{10.1016/j.scriptamat.2022.115186}},
  volume       = {{226}},
  year         = {{2023}},
}