Numéro
J. Phys. IV France
Volume 01, Numéro C7, Décembre 1991
2nd International Conference
Laser M2P
Page(s) C7-61 - C7-64
DOI http://dx.doi.org/10.1051/jp4:1991713
2nd International Conference
Laser M2P

J. Phys. IV France 01 (1991) C7-61-C7-64

DOI: 10.1051/jp4:1991713

SURFACE TREATMENTS BY Cw YAG LASER

J.C. JULES1, D.F. GREVEY1, J.M. PELLETIER2, M. PILLOZ2, P. KIRAT2 and A.B. VANNES3

1  I.U.T. du Creusot, Laboratoire de Thermomécanique, 12 rue de la Fonderie, F-71200 Le Creusot, France
2  I.N.S.A. Lyon, GEMPPM/CALFETMAT, 20 avenue A. Einstein, F-69621 Villeurbanne cedex, France
3  Ecole Centrale de Lyon, MMP, Avenue G. de Collonges, F-69631 Ecully, France


Abstract
The feasability of surface treatments by cw YAG laser has been established. Concerning solid phasis treatment, we explored superficial quenching of grey cast iron. It brings out that it's no necessar to precoat the sample before treatment, the natural absorptivity is suffisant. Concerning liquid phasis transformation two examples are presented : surface alloying and cladding. For the first one, the power required for a given melted depth is 2 times lower than for a CO2 beam. Concerning the second example, it appears that the use of a step index fiber could ameliorate obtained results. Finally from a metalurgical point of view, obtained structures are the same than with a CO2 beam.



© EDP Sciences 1991