Effect of laser oscillating welding on microstructure and mechanical properties of 40Cr steel/45 steel fillet welded joints

Cheng, Wei; Zhang, Xiaolei; Lu, Jinzhong; Dai, Fengze; Luo, Kaiyu

doi:10.1016/j.ijleo.2021.166458

Cited by 10 publications

(2 citation statements)

References 20 publications

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“…In addition, it can also improve the weld formation and reduce the crack tendency. In the laser welding process, the amplitude, frequency and power of the laser beam were adjusted, changing the size of the weld pool, reducing the number of spatters, and stabilizing the welding process [4][5][6]. For example, Yosuke Yamazaki et al found that as the amplitude became greater, the weld surface was wider, and the weld depth was shallower [7].…”

Section: Introductionmentioning

confidence: 99%

Effect of joint-extrusion-force on the plasticity of beam oscillation fiber laser welded X₂CrTiNb₁₈ ferritic corrosion resisting steels

Zhang

Chi²,

Zhang³

et al. 2023

J. Phys.: Conf. Ser.

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The effect of extrusion force on the microstructure and plasticity of the X2CrTiNb18 ferritic corrosion resisting steels joints which were welded by beam oscillation laser welding was studied. The cross section profile of welded joint beam oscillating fiber laser welding & extrusion (OLW&E) was similar to that of the beam oscillation laser welding (OLW), but the weld width of OLW&E was slightly narrow. The differences of microstructure between them were very obvious. In the OLW&E weld zone (WZ), on the one hand, the quantity of small grains increased obviously, and on the other hand they grew in a staggered state. In the plastic forming process, the deformation compatibility of welded joints was significantly improved, and its plasticity was increased by 21%.

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Section: Introductionmentioning

confidence: 99%

Effect of joint-extrusion-force on the plasticity of beam oscillation fiber laser welded X₂CrTiNb₁₈ ferritic corrosion resisting steels

Zhang

Chi²,

Zhang³

et al. 2023

J. Phys.: Conf. Ser.

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“…Compared with traditional welding methods, laser welding has the advantages of controllable energy accuracy, a small heat-affected zone, and low residual stresses [1][2][3]. Laser welding is a complex physical, chemical, and metallurgical process [4,5].…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Preheating Temperature on Molten Pool Dynamics in Laser Deep-Penetration Welding

et al. 2022

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In this paper, a heat-flow coupling model of laser welding at preheating temperature was established by the FLUENT 19.0 software. The fluctuation of the keyhole wall and melt flow behavior in the molten pool under different preheating temperatures were analyzed, and the correlation between keyhole wall fluctuation and molten pool flow with spatters and bubbles was obtained. The results indicate that when the outer wall in the middle of the rear keyhole wall is convex, the inner wall is concave, which causes spatter or the bottom of the keyhole to collapse. When the metal layer in the middle of the rear keyhole wall turns into obliquely upward flow, welding spatter is generated. In contrast, the metal layer in the middle of the rear keyhole wall changes to flow into the keyhole, and the bottom of the keyhole collapses. When the preheating temperature is 300 K (ambient temperature), 400 K, and 500 K, the inner wall in the middle of the rear keyhole wall is concave. With the increase in the preheating temperature, the area of the concave gradually increases, and the size of the liquid column behind the keyhole opening gradually decreases. When the preheating temperature is 300 K, there are more spatters above the molten pool. In comparison, when the preheating temperature is 400 K or 500 K, there are less spatters, and the bottom of the keyhole collapses.

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Analysis of microcosmic geometric property in pre-stressed dry grinding process

Xiu

et al. 2023

Int J Adv Manuf Technol

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Effect of laser oscillating welding on microstructure and mechanical properties of 40Cr steel/45 steel fillet welded joints

Cited by 10 publications

References 20 publications

Effect of joint-extrusion-force on the plasticity of beam oscillation fiber laser welded X₂CrTiNb₁₈ ferritic corrosion resisting steels

Effect of joint-extrusion-force on the plasticity of beam oscillation fiber laser welded X₂CrTiNb₁₈ ferritic corrosion resisting steels

Numerical Simulation of Preheating Temperature on Molten Pool Dynamics in Laser Deep-Penetration Welding

Analysis of microcosmic geometric property in pre-stressed dry grinding process

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Effect of laser oscillating welding on microstructure and mechanical properties of 40Cr steel/45 steel fillet welded joints

Cited by 10 publications

References 20 publications

Effect of joint-extrusion-force on the plasticity of beam oscillation fiber laser welded X2CrTiNb18 ferritic corrosion resisting steels

Effect of joint-extrusion-force on the plasticity of beam oscillation fiber laser welded X2CrTiNb18 ferritic corrosion resisting steels

Numerical Simulation of Preheating Temperature on Molten Pool Dynamics in Laser Deep-Penetration Welding

Analysis of microcosmic geometric property in pre-stressed dry grinding process

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Effect of joint-extrusion-force on the plasticity of beam oscillation fiber laser welded X₂CrTiNb₁₈ ferritic corrosion resisting steels

Effect of joint-extrusion-force on the plasticity of beam oscillation fiber laser welded X₂CrTiNb₁₈ ferritic corrosion resisting steels