YAG Laser Welding of Shape Memory Alloy

Hai Shen Zhou; Hong Guang Li; Wei Wang

doi:10.4028/www.scientific.net/AMM.66-68.798

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 66-68YAG Laser Welding of Shape Memory Alloy

YAG Laser Welding of Shape Memory Alloy

Abstract:

With high energy YAG Laser beam method, the weld ability of the TiNi 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.

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Periodical:

Applied Mechanics and Materials (Volumes 66-68)

Pages:

798-801

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.66-68.798

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Online since:

July 2011

Authors:

Hai Shen Zhou, Hong Guang Li, Wei Wang

Keywords:

Laser Welding, Shape Memory Alloy Actuator, Welding

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References

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