Comparative study on fiber laser welding of GH3535 superalloy in continuous and pulsed waves

Jiang, Zhenguo; Wang, Tao; Yu, Kun; Tan, Caiwang; Chen, Yanbin; Li, Liqun; Li, Zhijun

doi:10.1016/j.matdes.2016.08.055

Cited by 37 publications

(5 citation statements)

References 19 publications

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“…With respect to L1 samples, the a better superficial aspect; however, also in this case, radiography in Figure 3b Owing to the significant porosity present in both L1 and L2 joints, these LW dures give unsatisfactory results. Therefore, for L3 samples, a pulsed laser beam w to reach a higher instantaneous intensity [30][31][32]. Laser pulses are schematically sh Figure 4 and the process parameters are reported in Table 2.…”

Section: Quality Of Weldsmentioning

confidence: 99%

Process Optimization in Laser Welding of IN792 DS Superalloy

Barbieri,

Cognini,

de Crescenzo

et al. 2024

Metals

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Ni-base superalloys are employed to produce parts of aeronautic engines, space vehicles and power plants. During the production process or lifetime of components, cracks may occur which affect their performance. Reliable repairs can be carried out through high-energy density welding techniques. This work investigated laser welding of the directionally solidified IN792 DS superalloy. The characteristics of the original material and their evolution in the base metal, heat-affected zone and melt zone after laser welding in different conditions and post-welding heat treatment were investigated through micro-hardness tests, light and scanning electron microscopy observations. The study allowed to optimize the process parameters and post-welding heat treatment, obtaining joints without macro-defects, such as cracks and pores, and with properties and microstructures of the melt zone like those of base metal.

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Section: Quality Of Weldsmentioning

confidence: 99%

Process Optimization in Laser Welding of IN792 DS Superalloy

Barbieri,

Cognini,

de Crescenzo

et al. 2024

Metals

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“…With a pulse energy of 10 J, the maximum hardness and tensile strength can be obtained [72]. Jiang et al [73] compared pulse wave and continuous wave laser welding of GH3535 superalloy. The grain size of the pulse wave joint is smaller than the grain size of the continuous wave joint, and the molten pool oscillation effect of which reduces the generation of pores.…”

Section: Others 17 / 72mentioning

confidence: 99%

A review on the effect of laser pulse shaping on the microstructure and hot cracking behavior in the welding of alloys

Zhang

Jia

et al. 2021

Optics & Laser Technology

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“…The unpretentious cover stage of the welding spot traps the plasma crest in the keyhole left inside and creates pores. It is asserted that porosity will lessen by increasing the frequency in GH3535 superalloys welding [52]. The formability of weld joints will be enhanced by increasing the pulse repetition rate [53].…”

Section: B Effects Of Laser Welding Parametersmentioning

confidence: 99%

An Overview of Laser Welding of High Strength Steels for Automotive Application

Manoharan¹,

Quazi²,

Bashir³

et al. 2020

Int. j. technol. eng. stud.

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The current study investigates the effect of processing parameters Advance High Strength Stainless steel (AHSS) in terms of weld geometry by using the Pulse Wave (PW) mode of the fibre laser. The mechanical characteristics and microstructure are discussed and studied based on the literature. This study conducted an extensive literature review and highlighted various types of steel important for automotive applications. After that, laser welding of steel and the corresponding effect of parameters and their effect on weld geometry are discussed. It can be concluded that the variation of laser welding parameters can cause high thermal distortion and greatly affect the joint's mechanical performance. Hence, an optimum parameter value should be investigated to obtain a strong joint. This study also highlighted several avenues that researchers in future must explore.

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Comparative study on fiber laser welding of GH3535 superalloy in continuous and pulsed waves

Cited by 37 publications

References 19 publications

Process Optimization in Laser Welding of IN792 DS Superalloy

Process Optimization in Laser Welding of IN792 DS Superalloy

A review on the effect of laser pulse shaping on the microstructure and hot cracking behavior in the welding of alloys

An Overview of Laser Welding of High Strength Steels for Automotive Application

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