scholarly journals Improvement of Filler Wire Dilution Using External Oscillating Magnetic Field at Full Penetration Hybrid Laser-Arc Welding of Thick Materials

Metals ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 594 ◽  
Author(s):  
Ömer Üstündağ ◽  
Vjaceslav Avilov ◽  
Andrey Gumenyuk ◽  
Michael Rethmeier

Hybrid laser-arc welding offers many advantages, such as deep penetration, good gap bridge-ability, and low distortion due to reduced heat input. The filler wire which is supplied to the process is used to influence the microstructure and mechanical properties of the weld seam. A typical problem in deep penetration high-power laser beam welding with filler wire and hybrid laser-arc welding is an insufficient mixing of filler material in the weld pool, leading to a non-uniform element distribution in the seam. In this study, oscillating magnetic fields were used to form a non-conservative component of the Lorentz force in the weld pool to improve the element distribution over the entire thickness of the material. Full penetration hybrid laser-arc welds were performed on 20-mm-thick S355J2 steel plates with a nickel-based wire for different arrangements of the oscillating magnetic field. The Energy-dispersive X-ray spectroscopy (EDS) data for the distribution of two tracing elements (Ni and Cr) were used to analyze the homogeneity of dilution of the filler wire. With a 30° turn of the magnetic field to the welding direction, a radical improvement in the filler material distribution was demonstrated. This would lead to an improvement of the mechanical properties with the use of a suitable filler wire.

2018 ◽  
Vol 1109 ◽  
pp. 012015 ◽  
Author(s):  
Ömer Üstündag ◽  
Vjaceslav Avilov ◽  
Andrey Gumenyuk ◽  
Michael Rethmeier

2019 ◽  
Vol 21 (2) ◽  
pp. 84-96
Author(s):  
Andrey Vorontsov ◽  
◽  
Kseniya Osipovich ◽  
Andrey Chumaevskii ◽  
Veronika Utyaganova ◽  
...  

2004 ◽  
Vol 9 (2) ◽  
pp. 163-168 ◽  
Author(s):  
B. Y. B. Yudodibroto ◽  
M. J. M. Hermans ◽  
Y. Hirata ◽  
G. den Ouden

2010 ◽  
Vol 654-656 ◽  
pp. 2560-2563 ◽  
Author(s):  
Kalenda Mutombo ◽  
Madeleine du Toit

Semi-automatic and automatic pulsed gas metal arc welding (GMAW) of aluminium alloy 5083 with ER5356 filler wire causes considerable softening in the weld. The tensile strength of dressed automatic welds approaches that of the base metal, but the stress concentration caused by the weld toe in undressed semi-automatic welds reduced the tensile strength significantly. Fully automatic welds displayed improved fatigue properties compared to semi-automatic welds.


2015 ◽  
Vol 1120-1121 ◽  
pp. 1292-1296 ◽  
Author(s):  
Victor A. Karkhin ◽  
Pavel N. Homich ◽  
Sergei Yu. Ivanov ◽  
Vesselin Michailov ◽  
Oleg V. Panchenko

Calculation technique in order to reconstruct the 3D temperature field and predict the microstructure and mechanical properties of the weld metal in hybrid laser-arc welding is developed. The technique is based on the solution of the direct 3D temperature problem by a function-analytical method, the numerical solution of the inverse problem for the unknown parameters of a volume heat source, the employment of the known models for prediction of the microstructure and mechanical properties. The proposed calculation technique makes it possible to reduce considerably the total time for data input and solution. It is demonstrated with an example of butt hybrid laser-arc welding.


Sign in / Sign up

Export Citation Format

Share Document