This paper follows Lemoine’s work presented in ICALEO’93. It concerns the modelling of cladding with Nd:YAG laser. Now we are interested in cladding with low laser powers(typically P<800W). Experimental observations of the evolution of the mass of the clads allows to show two power thresholds. The theoretical study relies on a calculation of fluence provided to the substrate and on a model of heat transfert into the substrate. We suppose thatthe first threshold is the required power for the melting of the substrate. The second power is the threshold from the powder is directly melted by the beam and is liquid when contacting the substrate.

1.
Picasso
M.
,
Mardsen
C.F.
,
Wagniere
J.D.
,
Frenck
A.
,
Rappaz
M.
 (
1994
). “
A simple but realistic model for laser cladding
”.
Int. Metal. Trans.B
Google Scholar
 
2.
Rappaz
M.
 (
1991
).
Laser de puissance et traitements des matériaux. Presses polytechniques et universitaires Romandes, Sireuil
.
375
–
401
.
3.
Sallamand
P.
 (
1994
).
Thesis
,
University of Lyon -
France
.
Google Scholar
 
4.
Lemoine
F.
,
Grevey
D.F.
 and
Vannes
A.B.
 (
1993
) “
Cross-section modelling of laser cladding
”,
ICALEO '
93
:
203
–
212
.
Google Scholar
 
5.
Lemoine
F.
,
Grevey
D.F.
,
Vastra-Bobin
I.
 and
Vannes
A.B.
 (
1993
). “
Modélisation de la section de dépôts obtenus par fusion d’une poudre métallique projetée dans un faisceau laser Nd-YAG
“,
J.Phys. III - France
,
3
:
2043
–
2053
.
https://doi.org/10.1051/jp3:1993257
Google Scholar
Crossref
Search ADS
 
6.
Lemoine
F.
,
Grevey
D.F.
,
Vastra-Bobin
I.
 and
Vannes
A.B.
 (
1994
) “
Traitement de surface en continu avec un laser Nd:YAG impulsionnel
”,
J.Phys.VI - France, colloque C
4
:
43
–
46
.
Google Scholar
 
7.
Lemoine
F.
,
Grevey
D.F.
 and
Vannes
A.B.
 (
1995
) “
Indirect determination of the absorbance during Nd:YAG laser-matter interaction
”,
Lasers in Engineering
.
Google Scholar
 
8.
Lemoine
F.
,
Chevalier
P.
,
Grevey
D.F.
 and
Vannes
A.B.
 (
1995
) “
An analytical model for cladding with pulsed or cw Nd:YAG lasers
”,
J.Mat.Sciences
.
Google Scholar
 
9.
Kastler
A.
 (
1952
).
La diffusion de la lumière par les milieux troubles. Hermann Ed
.,
Paris
.
Google Scholar
 
10.
Dezert
D.
,
Pelletier
J.M.
,
Kinkelin
K.
 and
Vannes
A.B.
, (
1993
) “
DÉveloppement d’une buse coaxiale à double vortex pour les revêternents laser multidirectionnels avec apport de poudre
”,
Bull. du Club Laser de Puissance
, n°
12
:
48
–
61
.
Google Scholar
 
This content is only available via PDF.
© 1995 Laser Institute of America.
1995
Laser Institute of America
You do not currently have access to this content.