EXCIMER-LASER PROCESSING OF GREY CAST-IRON - MICROSTRUCTURAL AND TRIBOLOGICAL CHARACTERIZATION

Authors
MAREST G FONTES A JEANDIN M FAYEULLE S VARDAVOULIAS M FRAINAIS M
Citation
G. Marest et al., EXCIMER-LASER PROCESSING OF GREY CAST-IRON - MICROSTRUCTURAL AND TRIBOLOGICAL CHARACTERIZATION, Hyperfine interactions, 112(1-4), 1998, pp. 39-42
Citations number
4
Categorie Soggetti
Physics, Atomic, Molecular & Chemical","Physics, Nuclear","Physics, Condensed Matter
Journal title
Hyperfine interactions → ACNP
ISSN journal
03043843
Volume
112
Issue
1-4
Year of publication
1998
Pages
39 - 42
Database
ISI
SICI code
0304-3843(1998)112:1-4<39:EPOGC->2.0.ZU;2-V
Abstract
Pearlitic grey iron was treated by means of a XeCl laser to remelt onl y a shallow layer. This process allows to modify the heteregeneous sur faces of cast irons in order to improve their tribological behaviour. The energy density ranged from 0.3 to 3 J/cm(2) and the number of shot s from 4 to 40, it is shown that after laser irradiation austenite is formed in the melted layer; compressive stresses at the surface were e xhibited as well as the deposition of graphite and the formation of ca rbides. It is shown that excimer laser processing highly decreases the coefficient of friction and the wear rate.