The laser cladding process was used in order to create crack and pore free layers and webs out of Inconel 738LC with Nd:YAG laser radiation. During the experiments the processing parameters were varied, and experiments were done partly on cooled and partly on not cooled specimens. Showing the dependence of pore and crack formation on the temperature distribution, these results are compared with those of simulation by means of heat conduction calculations. With these investigations a successful reconditioning of turbine blades and vanes should be reached.

Topics
Thermodynamic states and processes, Lasers, Alloys, Crack formation, Materials synthesis and processing
1.
Stoiber
,
J.
,
Einsatz neuer Werkstoffe für moderne Gasturbinenschaufeln
.
Allianz Report.
4
/
1998
; pp.
236
–
246
Google Scholar
 
2.
Backes
,
G.
;
Kreutz
,
E.W.
;
Gasser
,
A.
;
Hoffmann
,
E.
;
Wissenbach
,
K.
;
Poprawe
,
R.
Proceedings Lane 2: Near Neat-Shape Reconditioning and Manufacturing of Tools and Machine Parts Using Laser Cladding and Generating
.
Bamberg
:
Meisenbach - Verlag
,
1997
; pp.
747
–
756
3.
Gasser
,
A.
;
Kreutz
,
E.W.
;
Wissenbach
,
K.
Proceedings of the SURTEC Congress: Beschichten mit CO2-Laserstrahlung
.
München/Wien
:
Carl Hanser Verlag
1989
; pp.
545
–
554
4.
Kreutz
,
E.W.
;
Backes
,
G.
;
Gasser
,
A.
;
Keutgen
,
S.
;
Wissenbach
,
K.
Proceedings ECLAT: CO2 Laser Radiation - a Versatile Tool for Reconditioning
.
Frankfurt
:
Werkstoff-Informationsgesellschaft
,
1998
; pp.
45
–
55
5.
Keutgen
,
S.
Instandsetzen von Turbinenschaufeln für Gas- und Dampfturbinen aus dem Kraftwerksbau
; Diploma Thesis,
RWTH Aachen
,
2000
Google Scholar
 
6.
Pirch
,
N.
;
Kreutz
,
E.W.
;
He
,
X.
;
Mordike
,
B
;
Proceedings of the International Conference Modeling of Casting, Welding and Advanced Solidification Processes-VIII: 3D Modelling of Heat, Momentum and Solute Transport in Laser Surface Alloying
.
Warrendale, Pennsylvania
:
The Minerals, Metals & Materials Society
,
1998
: pp.
329
–
336
7.
Schatt
,
W.
 Werkstoffe des Maschinen-, Anlagen- und Apparatebaus,
Leipzig
:
VEB Deutscher Verlag für Grundstoffindustrie
,
1981
: pp.
219
–
223
8.
Sims
,
C. T.
;
Stoloff
,
N. S.
;
Hagel
,
W. C.
Superalloys II
,
New York, Chichester, Brisbane, Toronto, Singapore
:
John Wiley & Sons
,
1987
: pp
1
–
26
Google Scholar
 
9.
Dienst
,
W.
Hochtemperaturwerkstoffe
,
Karlsruhe
:
Werkstofftechnische Verlagsgesellschaft m.b.H.
,
1978
: pp.
7
–
50
Google Scholar
 
10.
The International Nickel Company, INC
.
Alloy IN-738, Technical Data
.
New York
, pp.
2
–
11
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2001
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