Transport phenomena and keyhole evolution process in laser welding of stainless steel

Liu, Jiangwei; Zeng, Pingwang; Rao, Zhenghua; Zhang, Tian-li

doi:10.1007/s11771-019-4156-x

Cited by 4 publications

(2 citation statements)

References 30 publications

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“…Yao et al from Shanghai Jiaotong University performed laser welding of Cu with stainless steel [3] . The results show that different laser offsets affect the dilution rate of Cu in the weld seam, which has a higher tensile strength at a lower Cu dilution rate.…”

Section: High Quality Welding Of Dissimilar Metalsmentioning

confidence: 99%

The influence of plasma arc composite laser welding parameters on aluminum alloy weld seam weld penetration

Wu,

Liu,

Liu

2024

J. Phys.: Conf. Ser.

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In laser and plasma arc compound heat source welding technology, we collected a series of comparative data for a full range of analyses. We proceeded with an in-depth discussion of these two welding technologies in terms of the weld penetration, the melted width, the shape and size of the weld, laser power, heat source spacing, and welding speed. After research, we found that during laser-arc hybrid welding, weld penetration is very sensitive to laser power and welding speed but relatively less sensitive to heat source spacing and welding speed.

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Section: High Quality Welding Of Dissimilar Metalsmentioning

confidence: 99%

The influence of plasma arc composite laser welding parameters on aluminum alloy weld seam weld penetration

Wu,

Liu,

Liu

2024

J. Phys.: Conf. Ser.

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“…In addition, the powders with irregular shapes often have internal pores which may contribute to defect formation due to the internal pores dragging into the melt pool. Moreover, it is well known that the formation of pore defects in additive manufacturing process is closely related to the "keyhole effect" which is formed by the vaporization of the molten pool materials under the recoil pressure of the laser [20,21].…”

Section: Effect Of Materials Powdersmentioning

confidence: 99%

Surface Integrity of Inconel 738LC Parts Manufactured by Selective Laser Melting Followed by High-speed Milling

Ren

Guo

Zhang

2023

Chin. J. Mech. Eng.

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This study is concerned with the surface integrity of Inconel 738LC parts manufactured by selective laser melting (SLM) followed by high-speed milling (HSM). In the investigation process of surface integrity, the study employs ultra-depth three-dimensional microscopy, laser scanning confocal microscopy, scanning electron microscopy, electron backscatter diffractometry, and energy dispersive spectroscopy to characterize the evolution of material microstructure, work hardening, residual stress coupling, and anisotropic effect of the building direction on surface integrity of the samples. The results show that SLM/HSM hybrid manufacturing can be an effective method to obtain better surface quality with a thinner machining metamorphic layer. High-speed machining is adopted to reduce cutting force and suppress machining heat, which is an effective way to produce better surface mechanical properties during the SLM/HSM hybrid manufacturing process. In general, high-speed milling of the SLM-built Inconel 738LC samples offers better surface integrity, compared to simplex additive manufacturing or casting.

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Spatiotemporal evolution of high-aspect-ratio filamentary trace in sapphire of picosecond pulse burst-mode for laser lift-off

Sun

Yan

Wang

et al. 2022

J. Cent. South Univ.

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Transport phenomena and keyhole evolution process in laser welding of stainless steel

Cited by 4 publications

References 30 publications

The influence of plasma arc composite laser welding parameters on aluminum alloy weld seam weld penetration

The influence of plasma arc composite laser welding parameters on aluminum alloy weld seam weld penetration

Surface Integrity of Inconel 738LC Parts Manufactured by Selective Laser Melting Followed by High-speed Milling

Spatiotemporal evolution of high-aspect-ratio filamentary trace in sapphire of picosecond pulse burst-mode for laser lift-off

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