30 kW-level laser welding characteristics of 5A06 aluminum alloy thick plate under subatmospheric pressure

Wang, Jiming; Peng, Genchen; Li, Liqun; Si, Changjian; Meng, Shenghao; Gong, Jianfeng

doi:10.1016/j.optlastec.2019.105668

Cited by 28 publications

(3 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In fact, the commercial laser sources emit in a wide range of wavelengths, from the IR region to the UV one, delivering average powers of even tens of thousands of watts in both continuous wave (CW) and pulsed regimes. Recently, laser sources emitting in the range of a few tens of femtoseconds have permitted a so‐called cold interaction with the matter, avoiding heat accumulation and the correlated unwanted secondary effects, and lasers with average power values as high as 30 kW are now on the market …”

Section: Laser Processing and Photovoltaic Applicationsmentioning

confidence: 99%

“…Recently, laser sources emitting in the range of a few tens of femtoseconds have permitted a so-called cold interaction with the matter, avoiding heat accumulation and the correlated unwanted secondary effects, [48] and lasers with average power values as high as 30 kW are now on the market. [49] A laser is essentially constituted by an active material that is optically or electrically excited by a pump system ( Figure 8) [50] and that is placed along the axes of an optical cavity, made with a highly reflecting and a partially reflecting mirror.…”

Section: Laser Processing and Photovoltaic Applicationsmentioning

confidence: 99%

See 1 more Smart Citation

Laser‐Processed Perovskite Solar Cells and Modules

Palma

2019

Solar RRL

View full text Add to dashboard Cite

In the last decade, hybrid organic–inorganic perovskite‐based solar cells (PSCs) have shown an impressive rate of growth in performance, reaching power conversion efficiencies (PCEs) comparable with the ones exhibited by crystalline silicon devices. Recently, perovskite‐based solar modules (PSMs) have been developed, showing a similar pace in the progress of the reported PCE. Nevertheless, scaling up the dimensions of devices is not a trivial process. To this effect, different deposition and manufacturing techniques have to be implemented. Laser apparatuses have been demonstrated to be fundamental in the production of PSMs, due to the extreme precision needed for manufacturing processes. Herein, an overview of the recent progresses in the application of laser systems in the production of perovskite‐based solar devices is provided. In particular, lasers are used in small‐area PSCs to realize pulsed laser deposition procedures for the realization of perovskite layers and novel electrodes. In the field of PSMs, lasers have boosted the exploitation of substrates, minimizing the dimension of interconnection areas between the cells that form a module and providing the necessary accuracy, repeatability, and level of automation needed for the future industrialization of perovskite‐based solar technology.

show abstract

Section: Laser Processing and Photovoltaic Applicationsmentioning

confidence: 99%

Section: Laser Processing and Photovoltaic Applicationsmentioning

confidence: 99%

Laser‐Processed Perovskite Solar Cells and Modules

Palma

2019

Solar RRL

View full text Add to dashboard Cite

show abstract

“…V. G. Ivanchenko and Akhonin et al [18,19] have separately found that aluminum evaporates rapidly during the electron beam melting of Ti-Al alloys and have developed a mathematical model to describe it. Wang et al [20] reported that an uneven distribution of elements due to the evaporation of magnesium occurred in the welds of 5A06 aluminum alloy obtained by laser welding under vacuum. V. Juechter and A. Klassen et al [21][22][23] separately focused on the evaporation of aluminum during the selective electron beam melting (SEBM) of Ti-Al alloys and provided a method to calculate elemental evaporation fluxes.…”

Section: Introductionmentioning

confidence: 99%

Multi-Component Evaporation and Uneven Aluminum Distribution during High-Power Vacuum Laser Welding of Ti-6Al-4V Titanium Alloy

Wang

Zhang

Tan

et al. 2023

Metals

View full text Add to dashboard Cite

Titanium alloy is an important material for the manufacture of key components of deep-sea submersibles. High-power vacuum laser welding is an important method for welding TC4 thick plate (40–120 mm) structures. However, due to the low melting point of aluminum, its uneven distribution in the weld caused by evaporation during welding affects the quality of joints. This paper conducted experimental and simulation studies to investigate the effect of process parameters on multi-component evaporation and uneven aluminum distribution. Based on a three-dimensional model of vacuum laser welding, the mechanism of the uneven distribution of aluminum in the weld is explained. The results show that the uneven distribution of aluminum in the weld is mainly related to the metal vapor behavior and keyhole morphology. As the welding speed rises from 1 m/min to 3 m/min, the proportion of aluminum in the metal vapor and the degree of compositional unevenness increase. When the laser power increases from 6 kW to 18 kW, the proportion of aluminum in the metal vapor and degree of unevenness increase, peak at 12 kW, and then decrease. This work facilitates the selection of suitable process parameters to reduce aluminum evaporation during the high-power vacuum welding of Ti-6Al-4V alloys. Joints with a more stable performance can be obtained by avoiding the uneven distribution of aluminum.

show abstract

Influencing of Molten Pool Dynamic Behavior on the Weld Formation during the Laser‐Arc Hybrid Welding of 12 mm Thick Steel

Li,

Xu,

Liu

et al. 2024

steel research int.

View full text Add to dashboard Cite

A numerical simulation model is put forward to study the molten pool dynamic behavior and clarify its influencing mechanism on the undercut defects in laser‐arc hybrid welding (LAHW). The undercut defect is a common and challenging problem to address. However, a controversy exists on whether the dynamic process of molten pool can affect undercut defects, and the potential mechanism has been still unclear. The results suggest that profile variation of molten pool surface is driven by surface tension gradient, and the existence of eddy can alter the morphology and surface tension distribution of molten pool, which is the main factor to homogenize the flow field. Compared with the short‐circuit transfer mode, the molten metal flows toward the welds edge at a constant velocity (2.5–3.75 m min−1) in the spray transfer mode, which improves the stability of molten pool flow. It can be observed that the irregular fluctuation of molten metal during the solidification process can directly cause the undercut defects.

show abstract

30 kW-level laser welding characteristics of 5A06 aluminum alloy thick plate under subatmospheric pressure

Cited by 28 publications

References 26 publications

Laser‐Processed Perovskite Solar Cells and Modules

Laser‐Processed Perovskite Solar Cells and Modules

Multi-Component Evaporation and Uneven Aluminum Distribution during High-Power Vacuum Laser Welding of Ti-6Al-4V Titanium Alloy

Influencing of Molten Pool Dynamic Behavior on the Weld Formation during the Laser‐Arc Hybrid Welding of 12 mm Thick Steel

Contact Info

Product

Resources

About

30 kW-level laser welding characteristics of 5A06 aluminum alloy thick plate under subatmospheric pressure

Cited by 28 publications

References 26 publications

Laser‐Processed Perovskite Solar Cells and Modules

Laser‐Processed Perovskite Solar Cells and Modules

Multi-Component Evaporation and Uneven Aluminum Distribution during High-Power Vacuum Laser Welding of Ti-6Al-4V Titanium Alloy

Influencing of Molten Pool Dynamic Behavior on the Weld Formation during the Laser‐Arc Hybrid Welding of 12 mm Thick Steel

Contact Info

Product

Resources

About

30 kW-level laser welding characteristics of 5A06 aluminum alloy thick plate under subatmospheric pressure