Laser Beam Welding of Aluminum Alloys Under the Influence of an Electromagnetic Field

Schneider, A.; Avilov, Vjaceslav; Gumenyuk, Andrey; Rethmeier, Michael

doi:10.1016/j.phpro.2013.03.045

Cited by 50 publications

(29 citation statements)

References 9 publications

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“…A number of investigations were reported on porosity elimina tion in laser welding using various methods such as: application of a magnetic field on the weld pool [14][15][16], the use of a modulated beam [17], surface preparation [3,18], the use of hybrid laser-MlG or laser-TIG welding techniques [19], and the application of dual spots on the surface [20][21][22]. Only few investigations drew atten tion to porosity reduction by introducing a gap between the welded sheets.…”

Section: Introductionmentioning

confidence: 99%

Understanding the Effect of Heat Input and Sheet Gap on Porosity Formation in Fillet Edge and Flange Couch Laser Welding of AC-170PX Aluminum Alloy for Automotive Component Manufacture

Alshaer

Mistry

2015

Journal of Manufacturing Science and Engineering

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U n d e rs ta n d in g th e E ffect of H e a t In p u t and S h e e t G ap on P o ro sity F o rm a tio n in F ille t Edge and F la n g e Couch L a s e r W e ld in g of A C -1 7 0 P X A lu m in u m A llo y fo r A u to m o tiv e C o m p o n en t M a n u fa c tu re An investigation is reported on the characteristics of porosity formation in high power disk laser welding o f AC-170PX (AA6014) alloy sheets (coated with titanium and zirconium) in two weld joint configurations: fillet edge and flange couch with AA4043 filler wire for potential automotive manufacturing applications. Porosity, macro-and microstructure characteristics, tensile strengths, microhardness, and joint geometry were investigated. It has been found that an increase in heat input and welding speed generates more porosity in both types of joints. The introduction of a 0.2 mm gap reduces porosity significantly in the fillet edge joints but it does not have noticeable effect on the flange couch joints. The mechanism of the porosity formation is discussed.

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Section: Introductionmentioning

confidence: 99%

Understanding the Effect of Heat Input and Sheet Gap on Porosity Formation in Fillet Edge and Flange Couch Laser Welding of AC-170PX Aluminum Alloy for Automotive Component Manufacture

Alshaer

Mistry

2015

Journal of Manufacturing Science and Engineering

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“…Molten pool instabilities in the root area may cause gas bubbles. The high affinity of titanium to oxygen can give rise to the formation of an oxide layer on the melt very quickly, which impedes gas bubbles escape [34,35]. In deep penetration welding, the weld depth is increased, but due to the formation of the gaseous keyhole, the risk of process defects is increased.…”

Section: Introductionmentioning

confidence: 99%

Effect of shielding gas on the properties of CP titanium Grade 2 laser weld joints

Vyskoč¹,

Dománková²,

Sahul³

et al. 2020

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The paper deals with the evaluation of the shielding gas influence on the properties of titanium Grade 2 weld joints produced with disk laser. Butt weld joints were produced under different shielding gas types, namely Ar, He, Ar + 5 vol.% He, Ar + 30 vol.% He, and without shielding weld pool. Light and electron microscopy, microhardness measurements, computed tomography, and tensile testing were used for evaluation of weld joint properties. He-shielded weld joints were the narrowest ones. On the other hand, Ar-shielded weld joints exhibited the largest weld width. The choice of shielding gas had a significant influence on the porosity of welds. The lowest porosity was observed in the weld joint produced in Ar with the addition of 30 vol.% He shielding atmosphere (only 0.03 %), while the highest level of porosity was detected in weld joint produced without shielding gas (0.76 %). Except for unshielded titanium Grade 2 weld joint, the lowest tensile strength was recorded in Ar-shielded weld joints. On the contrary, the highest average microhardness, except unshielded weld joint, was measured in He-shielded weld joints.

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“…The high frequencies caused a small penetration depth and thus exerted a stabilizing effect on the weld surface. As a result, the weld surface roughness could be reduced by 50% [16]. In particular, a steady magnetic field has been applied in partial penetration high power laser beam welding [17].…”

Section: Introductionmentioning

confidence: 99%

Suppression effect of a steady magnetic field on molten pool during laser remelting

Wang

Yao

et al. 2015

Applied Surface Science

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Laser Beam Welding of Aluminum Alloys Under the Influence of an Electromagnetic Field

Cited by 50 publications

References 9 publications

Understanding the Effect of Heat Input and Sheet Gap on Porosity Formation in Fillet Edge and Flange Couch Laser Welding of AC-170PX Aluminum Alloy for Automotive Component Manufacture

Understanding the Effect of Heat Input and Sheet Gap on Porosity Formation in Fillet Edge and Flange Couch Laser Welding of AC-170PX Aluminum Alloy for Automotive Component Manufacture

Effect of shielding gas on the properties of CP titanium Grade 2 laser weld joints

Suppression effect of a steady magnetic field on molten pool during laser remelting

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