Ti6Al4V is widely used in the aerospace industry due to its lightweight and high strength properties. Joining titanium is of prime importance and while other welding techniques have been documented, the use of a fibre laser to weld this material has not been extensively investigated. In this paper, autogenously butt weld joints of thin sheet of Ti6Al4V were carried out using a 2 kW Ytterbium fibre laser. To investigate the suitable welding experiment condition the welds were performed at different shielding conditions then the effects of laser power, welding speed, shielding gas on the fusion zone width of Ti6Al4V have been analyzed. The results suggest that in order to achieve a full penetration, minimum fusion zone and acceptable weld profile with low distortion for thin sheet titanium, the combination of process parameters should be carefully considered.

1.
Leyens
,
C.
and
M.
Peters
, Titanium and Titanium Alloys.
2003
:
WIEY-VCH Verlag GmbH&Co
.
KGaA, Weinheim
.
2.
COLLINGS
,
E.W.
, The physical metallurgy of titanium alloys.
1984
:
AMERICAN SOCIETY FOR METALS
.
3.
Dawes
,
C.
,
Laser welding
.
1992
:
Abington Publishing
.
4.
F.
Caiazzo
, et al
Lap and butt joining by a CO2 laser of titanium alloys for civil and military high speed aircarfs
. in
The 10th World International conference on Ti
.
2003
.
Hamburg
.
5.
F.
Caiazzo
, et al,
Ti6Al4V sheets lap and butt joints carried out by CO2 laser: mechanical and morphological characterization
.
Journal of Materials Processing Technology
,
2004
.
149
: p.
546
552
.
6.
Iammi
,
J.
,
I.
Pashby
, and
G.
Bi
.
The Effect of Output Diameter When Welding Austenitic Stainless with A Fibre Laser
. in
26th International Congress on Application of Lasers&Electro-Optics (ICALEO
).
2007
.
Orlando, USA
.
7.
Zhang
,
X.
, et al High-Power Fiber Laser Welding of Thick Steel at Low Welding Speed. in 26th International Congress on Applications of Lasers&Electro-Optics (ICALEO).
2007
.
Orlando, USA
.
8.
Nagayama
,
H.
, et al
Weld Penetration and Welding Phenomena of Aluminum Alloy with High-Power Fiber Laser
. in
26th International Congress on Applications of Lasers & Electro-Optics (ICALEO
).
2007
.
Orlando, USA
.
9.
Donachie
,
M.J.
, Titanium: a technical guide, ed. 2nd. Vol.
ASM International
.
2000
.
10.
Wang
,
H.Y.
and
Z.J.
Li
,
Investigation of laser beam welding process of AZ61 Magnesium-Based Alloy
.
ACTA Metallurgica Sinica
,
2006
.
19
: p.
287
294
.
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