Study on YAG Laser Welding Process of Fe-Mn-Si Shape Memory Alloy

Chao Yu Zhou; Cheng Xin Lin; Lin Lin Liu

doi:10.4028/www.scientific.net/AMM.37-38.1364

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 37-38Study on YAG Laser Welding Process of Fe-Mn-Si...

Study on YAG Laser Welding Process of Fe-Mn-Si Shape Memory Alloy

Abstract:

In this study, 1mm thick Fe-Mn-Si shape memory alloy was welded by both sides using YAG laser welding. In a certain range of parameters, the optimal processing parameters for the maximum tensile strength are current 100 A, pulse frequency 3 Hz and pulse width 15 ms by orthogonal experiment. With the optimal processing parameters, the tensile strength of the welded joint can achieve 94% of base material,and the fracture appears in the center of welding seam and the surface morphology of welding seam is good. The influence of processing parameters on tensile strength of weld joint is directly embodied in cross-section of the welding seam morphology. In the laser welding, the tensile strength of nonpenetration in seam and hourglass shape welded joint is generally poor, and the perfect welded joint has conditions such as wide welding seam, deep penetration, weld pool filling and “non-hollow”. Most importantly, the central area in cross-section of the welding seam is the widest.

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Periodical:

Applied Mechanics and Materials (Volumes 37-38)

Pages:

1364-1367

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.37-38.1364

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Online since:

November 2010

Authors:

Chao Yu Zhou, Cheng Xin Lin, Lin Lin Liu

Keywords:

Fe-Mn-Si Shape Memory Alloy, Laser Welding, Processing Parameter

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