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Quantitative study of roughness effect in nanoindentation on AISI316L based on simulation and experiment

CHEN, LING LU ; Ahadi, Aylin LU ; Zhou, Jinming LU and Ståhl, Jan-Eric LU (2017) In Proceedings of the Institution of Mechanical Engineers. Part C: Journal of Mechanical Engineering Science 231(21). p.4067-4075
Abstract
In nanoindentation, roughness of the sample surface can be a severe source of error in the determination of properties from indentation tests. Recently, roughness was also considered as a crucial issue in understanding the indentation size effect where a significant increase in hardness was seen with the decrease of depth. A three-dimensional roughness model with the Johnson–Cook material model is employed to study the roughness effect in nanoindentation on AISI316L stainless steel by use of finite element method. The rough surface is obtained by generating a random function in Matlab and then applying fast Fourier transform. With the quantitative analysis the mechanical properties such as the hardening and variation of the reduced modulus... (More)
In nanoindentation, roughness of the sample surface can be a severe source of error in the determination of properties from indentation tests. Recently, roughness was also considered as a crucial issue in understanding the indentation size effect where a significant increase in hardness was seen with the decrease of depth. A three-dimensional roughness model with the Johnson–Cook material model is employed to study the roughness effect in nanoindentation on AISI316L stainless steel by use of finite element method. The rough surface is obtained by generating a random function in Matlab and then applying fast Fourier transform. With the quantitative analysis the mechanical properties such as the hardening and variation of the reduced modulus are found. From both the experimental and simulation results, the hardness distribution shows strengthening effect with the increased surface roughness. Both the scatter of hardness and indentation modulus increases with the increased roughness. In addition, the dependence of the pile-up effect and the contact area on the roughness is studied and analyzed. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Nanoindentation, roughness, 3D FEM simulation,, hardness
in
Proceedings of the Institution of Mechanical Engineers. Part C: Journal of Mechanical Engineering Science
volume
231
issue
21
pages
13 pages
publisher
Professional Engineering Publishing
external identifiers
  • scopus:85031672714
  • wos:000412816900015
ISSN
0954-4062
DOI
10.1177/0954406216657575
language
English
LU publication?
yes
id
24909254-25db-4d2f-9476-4398cd4f8fcc
date added to LUP
2016-06-09 11:06:51
date last changed
2018-06-10 05:07:47
@article{24909254-25db-4d2f-9476-4398cd4f8fcc,
  abstract     = {In nanoindentation, roughness of the sample surface can be a severe source of error in the determination of properties from indentation tests. Recently, roughness was also considered as a crucial issue in understanding the indentation size effect where a significant increase in hardness was seen with the decrease of depth. A three-dimensional roughness model with the Johnson–Cook material model is employed to study the roughness effect in nanoindentation on AISI316L stainless steel by use of finite element method. The rough surface is obtained by generating a random function in Matlab and then applying fast Fourier transform. With the quantitative analysis the mechanical properties such as the hardening and variation of the reduced modulus are found. From both the experimental and simulation results, the hardness distribution shows strengthening effect with the increased surface roughness. Both the scatter of hardness and indentation modulus increases with the increased roughness. In addition, the dependence of the pile-up effect and the contact area on the roughness is studied and analyzed.},
  author       = {CHEN, LING and Ahadi, Aylin and Zhou, Jinming and Ståhl, Jan-Eric},
  issn         = {0954-4062},
  keyword      = {Nanoindentation,roughness,3D FEM simulation,,hardness},
  language     = {eng},
  number       = {21},
  pages        = {4067--4075},
  publisher    = {Professional Engineering Publishing},
  series       = {Proceedings of the Institution of Mechanical Engineers. Part C: Journal of Mechanical Engineering Science},
  title        = {Quantitative study of roughness effect in nanoindentation on AISI316L based on simulation and experiment},
  url          = {http://dx.doi.org/10.1177/0954406216657575},
  volume       = {231},
  year         = {2017},
}