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

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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YAG Laser Welding of Shape Memory Alloy

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.66-68.798 ◽

2011 ◽

Vol 66-68 ◽

pp. 798-801

Author(s):

Hai Shen Zhou ◽

Hong Guang Li ◽

Wei Wang

Keyword(s):

Shape Memory Alloy ◽

Shape Memory ◽

Welded Joint ◽

High Energy ◽

Alloy Sheet ◽

Yag Laser ◽

Beam Method ◽

Recovery Mechanisms ◽

Comparison Of The Results ◽

Welding Procedure

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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Tensile Strength and Pseudo-elasticity of YAG Laser Spot Melted Ti-Ni Shape Memory Alloy Wires

MATERIALS TRANSACTIONS ◽

10.2320/matertrans.45.1070 ◽

2004 ◽

Vol 45 (4) ◽

pp. 1070-1076 ◽

Cited By ~ 32

Author(s):

Yasuhito Ogata ◽

Masaya Takatugu ◽

Takeshi Kunimasa ◽

Keisuke Uenishi ◽

Kojiro F. Kobayashi

Keyword(s):

Tensile Strength ◽

Shape Memory Alloy ◽

Shape Memory ◽

Laser Spot ◽

Yag Laser

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Study of in-situ formation of Fe-Mn-Si shape memory alloy welding seam by laser welding with filler powder

Optics & Laser Technology ◽

10.1016/j.optlastec.2018.01.062 ◽

2018 ◽

Vol 104 ◽

pp. 65-72 ◽

Cited By ~ 2

Author(s):

Heng Ju ◽

Chengxin Lin ◽

Zhijie Liu ◽

Jiaqi Zhang

Keyword(s):

Shape Memory Alloy ◽

Laser Welding ◽

Shape Memory ◽

Welding Seam ◽

Filler Powder ◽

In Situ Formation

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Study of micro machining characteristics by Nd-YAG Laser on NiTinol shape memory alloy

Advances in Materials and Processing Technologies ◽

10.1080/2374068x.2021.1946757 ◽

2021 ◽

pp. 1-15

Author(s):

Subhadip Pradhan ◽

Piyush Bhusan Dash ◽

Kanchan Kumari ◽

Debabrata Dhupal

Keyword(s):

Shape Memory Alloy ◽

Shape Memory ◽

Micro Machining ◽

Yag Laser ◽

Machining Characteristics

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Laser welding of H-phase strengthened Ni-rich NiTi-20Zr high temperature shape memory alloy

Materials & Design ◽

10.1016/j.matdes.2021.109533 ◽

2021 ◽

Vol 202 ◽

pp. 109533

Author(s):

J.P. Oliveira ◽

Jiajia Shen ◽

J.D. Escobar ◽

C.A.F. Salvador ◽

N. Schell ◽

...

Keyword(s):

High Temperature ◽

Shape Memory Alloy ◽

Laser Welding ◽

Shape Memory

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Influence of Friction Stir Welding Process on the Weld Formation and Tensile Strength of Titanium and Aluminum Dissimilar Alloys Welded Joint

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.189-193.3266 ◽

2011 ◽

Vol 189-193 ◽

pp. 3266-3269 ◽

Cited By ~ 1

Author(s):

Yu Hua Chen ◽

Peng Wei ◽

Quan Ni ◽

Li Ming Ke

Keyword(s):

Tensile Strength ◽

Friction Stir Welding ◽

Cross Section ◽

Welded Joint ◽

Welding Process ◽

Dissimilar Materials ◽

Influence Of Process Parameters ◽

Friction Stir ◽

Dissimilar Alloys ◽

Titanium Aluminum

Titanium alloy TC1 and Aluminum alloy LF6 were jointed by friction stir welding (FSW), and the influence of process parameters on formation of weld surface, cross-section morphology and tensile strength were studied. The results show that, Titanium and Aluminum dissimilar alloy is difficult to be joined by FSW, and some defects such as cracks and grooves are easy to occur. When the rotational speed of stir head(n) is 750r/min and 950r/min, the welding speed(v) is 118mm/min or 150mm/min, a good formation of weld surface can be obtained, but the bonding of titanium/aluminum interface in the cross-section of weld joint is bad when n is 750r/min which results in a low strength joint. When n is 950r/min and v is 118mm/min，the strength of the FSW joint of Titanium/Aluminum dissimilar materials is 131MPa which is the highest．

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Fiber Laser Welding of Noncombustible Magnesium Alloy

Materials Science Forum ◽

10.4028/www.scientific.net/msf.580-582.479 ◽

2008 ◽

Vol 580-582 ◽

pp. 479-482 ◽

Cited By ~ 1

Author(s):

Yuji Sakai ◽

Kazuhiro Nakata ◽

Takuya Tsumura ◽

Mitsuji Ueda ◽

Tomoyuki Ueyama ◽

...

Keyword(s):

Tensile Strength ◽

Magnesium Alloy ◽

Laser Welding ◽

Fiber Laser ◽

Vickers Hardness ◽

Laser Power ◽

Welded Joint ◽

Welding Process ◽

Fiber Laser Welding ◽

Laser Welding Process

Noncombustible magnesium alloy AMC602 (Mg-6mass%Al-2mass%Ca) extruded sheet of 2.0mm thickness was successfully welded using a fiber laser welding process at welding speed of 10m/min at 3kW laser power. Tensile strength of the welded joint was about 82 to 88% of that of the base metal. Vickers hardness, tensile strength and micro structural properties are also discussed.

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