Scratch test induced shear banding in high power laser remelted metallic glass layers

D. T.A. Mathews, V. Ocelík, J. Th M. de Hosson

Research output: Contribution to journalArticleAcademicpeer-review

17 Citations (Scopus)

Abstract

Laser remelted surface layers of a Cu-based metallic glass forming alloy have been produced with fully amorphous depths up to 350 μm for single track widths of around 1.3 mm and have been checked by transmission of synchrotron radiation. They have been subjected to indentation hardness and scratch testing, and the development of shear bands in both situations has been addressed. During the cross-sectional hardness indentation tests, Vickers values of over 735 HV2 have been found through the depth of the treated layer, and the scratch testing has revealed extremely low friction coefficient values (<0.02 at 10 N in single-pass and 0.02 at 18 N multi-pass regimes against a diamond stylus). The shear band formation has been related to both scratch test speed (strain rate) and load (contact stress) by methods such as atomic force microscopy measurements and subsequent surface roughness characterization by a height-height correlation function.

Original languageEnglish
Pages (from-to)460-470
Number of pages11
JournalJournal of materials research
Volume22
Issue number2
DOIs
Publication statusPublished - Sep 2006
Externally publishedYes

Fingerprint

Shear bands
High power lasers
Metallic glass
metallic glasses
Indentation
high power lasers
Hardness
shear
Diamond
Testing
Synchrotron radiation
indentation
Strain rate
Loads (forces)
Atomic force microscopy
Diamonds
hardness
Surface roughness
contact loads
Friction

Cite this

@article{3e46aa63039c497589aae513593216a2,
title = "Scratch test induced shear banding in high power laser remelted metallic glass layers",
abstract = "Laser remelted surface layers of a Cu-based metallic glass forming alloy have been produced with fully amorphous depths up to 350 μm for single track widths of around 1.3 mm and have been checked by transmission of synchrotron radiation. They have been subjected to indentation hardness and scratch testing, and the development of shear bands in both situations has been addressed. During the cross-sectional hardness indentation tests, Vickers values of over 735 HV2 have been found through the depth of the treated layer, and the scratch testing has revealed extremely low friction coefficient values (<0.02 at 10 N in single-pass and 0.02 at 18 N multi-pass regimes against a diamond stylus). The shear band formation has been related to both scratch test speed (strain rate) and load (contact stress) by methods such as atomic force microscopy measurements and subsequent surface roughness characterization by a height-height correlation function.",
author = "Mathews, {D. T.A.} and V. Ocel{\'i}k and {de Hosson}, {J. Th M.}",
year = "2006",
month = "9",
doi = "10.1557/jmr.2007.0056",
language = "English",
volume = "22",
pages = "460--470",
journal = "Journal of materials research",
issn = "0884-2914",
publisher = "Cambridge University Press",
number = "2",

}

Scratch test induced shear banding in high power laser remelted metallic glass layers. / Mathews, D. T.A.; Ocelík, V.; de Hosson, J. Th M.

In: Journal of materials research, Vol. 22, No. 2, 09.2006, p. 460-470.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Scratch test induced shear banding in high power laser remelted metallic glass layers

AU - Mathews, D. T.A.

AU - Ocelík, V.

AU - de Hosson, J. Th M.

PY - 2006/9

Y1 - 2006/9

N2 - Laser remelted surface layers of a Cu-based metallic glass forming alloy have been produced with fully amorphous depths up to 350 μm for single track widths of around 1.3 mm and have been checked by transmission of synchrotron radiation. They have been subjected to indentation hardness and scratch testing, and the development of shear bands in both situations has been addressed. During the cross-sectional hardness indentation tests, Vickers values of over 735 HV2 have been found through the depth of the treated layer, and the scratch testing has revealed extremely low friction coefficient values (<0.02 at 10 N in single-pass and 0.02 at 18 N multi-pass regimes against a diamond stylus). The shear band formation has been related to both scratch test speed (strain rate) and load (contact stress) by methods such as atomic force microscopy measurements and subsequent surface roughness characterization by a height-height correlation function.

AB - Laser remelted surface layers of a Cu-based metallic glass forming alloy have been produced with fully amorphous depths up to 350 μm for single track widths of around 1.3 mm and have been checked by transmission of synchrotron radiation. They have been subjected to indentation hardness and scratch testing, and the development of shear bands in both situations has been addressed. During the cross-sectional hardness indentation tests, Vickers values of over 735 HV2 have been found through the depth of the treated layer, and the scratch testing has revealed extremely low friction coefficient values (<0.02 at 10 N in single-pass and 0.02 at 18 N multi-pass regimes against a diamond stylus). The shear band formation has been related to both scratch test speed (strain rate) and load (contact stress) by methods such as atomic force microscopy measurements and subsequent surface roughness characterization by a height-height correlation function.

U2 - 10.1557/jmr.2007.0056

DO - 10.1557/jmr.2007.0056

M3 - Article

VL - 22

SP - 460

EP - 470

JO - Journal of materials research

JF - Journal of materials research

SN - 0884-2914

IS - 2

ER -