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Load effect on scratch micro-mechanisms of solution strengthened Compacted Graphite Irons

Ghasemi, Rohollah ; Johansson, Jakob LU ; Ståhl, Jan-Eric LU and Jarfors, Anders E. W. (2019) In Tribology International 133. p.182-192
Abstract
This study investigates the scratch load effect, from 100 to 2000 mN, on micro-mechanisms involved during scratching. A pearlitic and three ferritic Compacted Graphite Irons (CGI) solution strengthened through addition of 3.66, 4.09, and 4.59 Si wt% were investigated. Good correlation was observed between hardness measurements, tensile testing, and scratch results explaining the influence of matrix characteristics on scratch behaviour for investigated alloys. A significant matrix deformation, change in frictional force and scratch coefficient of friction was observed by increase in scratch load. In all cases, microscratch depth and width increased significantly with load increasing, however pearlitic CGI showed most profound deformation,... (More)
This study investigates the scratch load effect, from 100 to 2000 mN, on micro-mechanisms involved during scratching. A pearlitic and three ferritic Compacted Graphite Irons (CGI) solution strengthened through addition of 3.66, 4.09, and 4.59 Si wt% were investigated. Good correlation was observed between hardness measurements, tensile testing, and scratch results explaining the influence of matrix characteristics on scratch behaviour for investigated alloys. A significant matrix deformation, change in frictional force and scratch coefficient of friction was observed by increase in scratch load. In all cases, microscratch depth and width increased significantly with load increasing, however pearlitic CGI showed most profound deformation, while the maximum and minimum scratch resistances were observed for high-Si ferritic and pearlitic CGI alloys, respectively. (Less)
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Tribology International
volume
133
pages
11 pages
publisher
Elsevier
external identifiers
  • scopus:85059818887
ISSN
0301-679X
DOI
10.1016/j.triboint.2019.01.010
language
English
LU publication?
yes
id
3e8c8d98-e677-4fd7-a6f7-3b967a1150dd
date added to LUP
2019-01-14 15:58:07
date last changed
2020-10-07 06:14:54
@article{3e8c8d98-e677-4fd7-a6f7-3b967a1150dd,
  abstract     = {This study investigates the scratch load effect, from 100 to 2000 mN, on micro-mechanisms involved during scratching. A pearlitic and three ferritic Compacted Graphite Irons (CGI) solution strengthened through addition of 3.66, 4.09, and 4.59 Si wt% were investigated. Good correlation was observed between hardness measurements, tensile testing, and scratch results explaining the influence of matrix characteristics on scratch behaviour for investigated alloys. A significant matrix deformation, change in frictional force and scratch coefficient of friction was observed by increase in scratch load. In all cases, microscratch depth and width increased significantly with load increasing, however pearlitic CGI showed most profound deformation, while the maximum and minimum scratch resistances were observed for high-Si ferritic and pearlitic CGI alloys, respectively.},
  author       = {Ghasemi, Rohollah and Johansson, Jakob and Ståhl, Jan-Eric and Jarfors, Anders E. W.},
  issn         = {0301-679X},
  language     = {eng},
  pages        = {182--192},
  publisher    = {Elsevier},
  series       = {Tribology International},
  title        = {Load effect on scratch micro-mechanisms of solution strengthened Compacted Graphite Irons},
  url          = {http://dx.doi.org/10.1016/j.triboint.2019.01.010},
  doi          = {10.1016/j.triboint.2019.01.010},
  volume       = {133},
  year         = {2019},
}