With high energy YAG Laser beam method, the weld ability of the NiTi shape memory alloy sheet was studied. The mechanical properties of both reference and laser welded samples were tested by stress–strain measurements. A systematic comparison of the results was carried out. Moreover, differential scanning calorimeter (DSC) investigations on samples taken from the heat affected zone and hardness measurements allowed further clarification that the modification was induced by the welding procedure. The crystal grain in welded joint is large and new phases such as Ni3Ti separate out. The results obtained on laser welded samples indicate the recovery mechanisms are little weakly modified by the presence of the welding zone.
REFERENCES
1.
A.
Tuissi
, S.
Besseghini
. Effect of Nd-YAG laser welding on the functional properties of the Ni–49.6at.%Ti[J]
. Materials Science and Engineering, A
273–275
(1999
), 813
–817
.2.
P.
Schlobmacher
, T.
Hass
, A.
Schüßler
, in: A.
Pelton
, D.
Hodgson
, T.
Duerig
(Eds.). (1994
) Proc. 1st Int. Conf. on Shape Memory and Superelastic Tech
, Pacific Grove, USA
, 85
.3.
P.
Schlobmacher
, T.
Hass
, A.
Schübler
, in: A.
Pelton
, D.
Hodgson
,S.
Russel
, T.
Duerig
(Eds.) (1994
) Proc. 1st Int. Conf. on Shape Memory and Superelastic Tech
, Pacific Grove, USA
, 137
.4.
A.
Tuissi
, (1999
) S.
Besseghini
. Effect of Nd-YAG laser welding on the functional properties of the Ni–49.6at.%Ti [J]
. Materials Science and Engineering. A
273-275
, 813
–817
.5.
A.
Falvo
, F.M.
Furgiuele
, C.
Maletta
. (2005
) Laser welding of a NiTi alloy:Mechanical and shape memory behaviour
Mater. Sci. Eng. A
412
235
–240
.
This content is only available via PDF.
© 2008 Laser Institute of America.
2008
Laser Institute of America
You do not currently have access to this content.