Weld pool dynamics and joining mechanism in pulse wave laser beam welding of Ti-6Al-4V titanium alloy sheets assembled in butt joint with an air gap

2022 ◽  
Vol 146 ◽  
pp. 107558
Author(s):  
Jicheng Chen ◽  
Zipeng Ouyang ◽  
Xinwei Du ◽  
Yanhong Wei
Keyword(s):  
Titanium Alloy ◽  
Laser Beam ◽  
Weld Pool ◽  
Pulse Wave ◽  
Laser Beam Welding ◽  
Butt Joint ◽  
Air Gap ◽  
Wave Laser

Modelling of the Heat Flux Density Distribution for Laser Beam Welding

2011 ◽  
Vol 183 ◽  
pp. 241-248 ◽  
Author(s):  
A. Marmołowski ◽  
W. Kiełczyński
Keyword(s):  
Heat Source ◽  
Laser Beam ◽  
Flux Density ◽  
Weld Pool ◽  
Thermal Field ◽  
Laser Beam Welding ◽  
Butt Joint ◽  
Numerical Calculations ◽  
Model Parameters ◽  
Weld Pool Geometry

Great interest of the laser beam welding in industry is a new theoretical task, making planning the welding procedure specification and the quality control of welded joints easier. Estimating and calculating the dimensions of a weld pool and temperature distribution near weld mainly concern heat source modelling. In the presented work calculations of welding pool shape and thermal field for cylindrical-powered-normally model of heat source have been presented. Parameters of the model of heat source and weld pool geometry were determined using analytical-numerical calculations. The results of numerical calculations were compared with the experimental data for butt joint made by CO2 laser beam. Comparable results have been observed. Practical recommendations for assumptions of model parameters - the flux density energy distribution of the heat source in case of calculations of the thermal field in the vicinity of a weld pool are given.

scholarly journals Comparison of different system technologies for continuous-wave laser beam welding of copper

Procedia CIRP ◽  
2020 ◽  
Vol 94 ◽  
pp. 587-591
Author(s):  
Eric Punzel ◽  
Florian Hugger ◽  
Robert Dörringer ◽  
Thorm Lembit Dinkelbach ◽  
Andreas Bürger
Keyword(s):  
Laser Beam ◽  
Continuous Wave ◽  
Laser Beam Welding ◽  
Continuous Wave Laser ◽  
Wave Laser

Improvement of laser beam welding by electromagnetic forces in the weld pool

2003 ◽  
Author(s):  
Guenter Ambrosy ◽  
Peter Berger ◽  
Helmut Huegel ◽  
D. Lindenau
Keyword(s):  
Laser Beam ◽  
Weld Pool ◽  
Laser Beam Welding ◽  
Electromagnetic Forces

A study on the metal flow in full penetration laser beam welding for titanium alloy

2004 ◽  
Vol 29 (4) ◽  
pp. 419-427 ◽  
Author(s):  
Hanbin Du ◽  
Lunji Hu ◽  
Jianhua Liu ◽  
Xiyuan Hu
Keyword(s):  
Titanium Alloy ◽  
Laser Beam ◽  
Metal Flow ◽  
Laser Beam Welding ◽  
Full Penetration

scholarly journals Reduced finite-volume model for the fast numerical calculation of the fluid flow in the melt pool in laser beam welding

2021 ◽  
Vol 1135 (1) ◽  
pp. 012010
Author(s):  
Jonas Wagner ◽  
Peter Berger ◽  
Philipp He ◽  
Florian Fetzer ◽  
Rudolf Weber ◽  
...  
Keyword(s):  
Fluid Flow ◽  
Laser Beam ◽  
Finite Volume ◽  
Weld Pool ◽  
Welding Speed ◽  
Laser Beam Welding ◽  
Melt Flow ◽  
Finite Volume Model ◽  
Volume Model ◽  
Weld Pool Geometry

Abstract In this paper we propose a reduced two-dimensional finite-volume model for the fast calculation of the melt flow. This model was used to determine the influence of the welding speed, viscosity in the melt and vapour flow inside of the keyhole on the fluid flow field, the temperature distribution, and the resulting weld-pool geometry for laser beam welding of aluminium. The reduced computational time resulting from this approach allows the fast qualitative investigation of different aspects of the melt flow over a wide range of parameters. It was found that the effect of viscosity within the melt is more pronounced for lower welding speeds whereas the effect of friction at the keyhole walls is more pronounced for higher welding speeds. The weld-pool geometry mainly depends on the welding speed.

scholarly journals High Power Laser Beam Welding of Thick-walled Ferromagnetic Steels with Electromagnetic Weld Pool Support

2016 ◽  
Vol 83 ◽  
pp. 362-372 ◽  
Author(s):  
André Fritzsche ◽  
Vjaceslav Avilov ◽  
Andrey Gumenyuk ◽  
Kai Hilgenberg ◽  
Michael Rethmeier
Keyword(s):  
Laser Beam ◽  
Weld Pool ◽  
High Power ◽  
Laser Beam Welding ◽  
High Power Laser ◽  
Power Laser ◽  
Ferromagnetic Steels

Fiber Laser Beam Welding of Ti-6242 - Effect of Processing Parameters on Microstructural and Mechanical Properties

2016 ◽  
Vol 879 ◽  
pp. 903-908 ◽  
Author(s):  
Nikolai Kashaev ◽  
Dmitry Pugachev ◽  
Stefan Riekehr ◽  
Volker Ventzke
Keyword(s):  
Mechanical Properties ◽  
Laser Beam ◽  
Fiber Laser ◽  
Laser Beam Welding ◽  
Base Material ◽  
Butt Joint ◽  
Beam Power ◽  
Focus Position ◽  
Laser Beam Power ◽  
Advance Speed

The present work investigates the effects of laser beam power, focus position and advance speed on the geometry, microstructure and mechanical properties of fiber laser beam welded Ti-6Al-2Sn-4Zr-2Mo (denoted as Ti-6242) butt joints used for high temperature applications. Detailed microstructural and mechanical studies were performed on welds produced using optimized parameters (a laser beam power of 5 kW, a focus position of 0.0 mm and an advance speed of 6.2 m/min). The Ti-6242 base material is characterized by a globular (α+β) microstructure. The heat input during laser beam welding led to the formation of a martensitic α’-phase fusion zone. The heat affected zone consisted of globular grains and acicular crystallites. These local transformations were connected with a change in the micro-texture, average grain size and β-phase content. Furthermore, the microhardness increased from 330 HV 0.3 to 450 HV 0.3 due to the martensitic transformation. The mechanical behavior of the laser beam welded Ti-6242 butt joint loaded in tension was determined by the properties of the Ti-6242 base material. The local increase in hardness provided a shielding effect that protected the Ti-6242 butt joint against mechanical damage.

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