Effect of waviness on the wear behaviour of 080 M40 (EN8) and 817 M40 (EN24A) steels

R. F. O'Connor, W. J. Tomlinson, L. A. Blunt

Research output: Contribution to journalArticle

Abstract

The effect of waviness was investigated on the wear performance of 080 M40 and 817 M40 steels machined by the turning and surface grinding processes for a sliding wear situation. The wear was measured with a precision relocation technique using a Talysurf 4 and the frictional coefficient force was monitored using a load cell. The worn surface was examined using scanning electron microscopy. For both types of steel, contact was at the wave crests. The crests were progressively truncated and work-hardened during the wear cycle. Generally, friction increased during running-in and stabilized on complete removal of the waves. For dry wear regimes high interfacial temperatures were set up at the wave crests. Consequently, the pin material oxidized and the friction and wear behaviour of the surface altered. On running-in the turned 817 M40 specimens showed large scale redeposition due to adhesive wear at the wave crests whilst the valleys were relatively smooth due to an abrasive process. A white layer of untempered martensite was produced at the surface of the ground 817 M40 specimens. This hard layer initially resisted abrasion and reduced friction.

LanguageEnglish
Pages259-268
Number of pages10
JournalTribology International
Volume24
Issue number5
DOIs
Publication statusPublished - Oct 1991
Externally publishedYes

Fingerprint

Steel
Wear of materials
steels
Friction
friction
Relocation
relocation
M40
abrasion
Abrasives
Abrasion
Martensite
abrasives
grinding
martensite
Adhesives
adhesives
valleys
sliding
Scanning electron microscopy

Cite this

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abstract = "The effect of waviness was investigated on the wear performance of 080 M40 and 817 M40 steels machined by the turning and surface grinding processes for a sliding wear situation. The wear was measured with a precision relocation technique using a Talysurf 4 and the frictional coefficient force was monitored using a load cell. The worn surface was examined using scanning electron microscopy. For both types of steel, contact was at the wave crests. The crests were progressively truncated and work-hardened during the wear cycle. Generally, friction increased during running-in and stabilized on complete removal of the waves. For dry wear regimes high interfacial temperatures were set up at the wave crests. Consequently, the pin material oxidized and the friction and wear behaviour of the surface altered. On running-in the turned 817 M40 specimens showed large scale redeposition due to adhesive wear at the wave crests whilst the valleys were relatively smooth due to an abrasive process. A white layer of untempered martensite was produced at the surface of the ground 817 M40 specimens. This hard layer initially resisted abrasion and reduced friction.",
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Effect of waviness on the wear behaviour of 080 M40 (EN8) and 817 M40 (EN24A) steels. / O'Connor, R. F.; Tomlinson, W. J.; Blunt, L. A.

In: Tribology International, Vol. 24, No. 5, 10.1991, p. 259-268.

Research output: Contribution to journalArticle

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