Experimental and simulation studies on laser conduction welding of AA5083 aluminium alloys

Tobar, M.J.; Galdo, María Isabel Lamas; Yáñez, A.; Sánchez-Amaya, J.M.; Boukha, Zouhair; Botana, Francisco

doi:10.1016/j.phpro.2010.08.056

Cited by 17 publications

(6 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In order to increase the laser absorption of aluminum alloys, some surface treatments has been applied in the literature. Among these treatments, the most common chemical and physical methods involve the application of dark coatings and roughness increase by sandblasting [2][3][4][5]. The influence of these superficial treatments on the properties of aluminum alloys weld beads has been recently analyzed [2].…”

Section: Introductionmentioning

confidence: 99%

Application of Laser Texturization to Increase the Depth of AA5083 Welds

Sánchez-Amaya¹,

Boukha

González-Rovira

et al. 2012

AMR

Self Cite

View full text Add to dashboard Cite

The application of laser beam welding to aluminium alloys has some complications, mainly due to their high reflectivity, high thermal conductivity and low viscosity. In order to increase the laser absorption of aluminium alloys, some surface treatments has been applied in the literature, such as the application of dark coatings or sandblasting. However, these conventional superficial treatments have some drawbacks, such as the low weld penetration, the possibility to undergo magnesium evaporation and the impossibility to control and/or change the superficial properties of the treated samples. In the present contribution, laser texturization treatments have been performed with a fibber laser for the first time on aluminium alloys to increase their absorption and weld penetration. The texturised samples leaded to deeper bead welds than the reference sandblasted samples.

show abstract

Section: Introductionmentioning

confidence: 99%

Application of Laser Texturization to Increase the Depth of AA5083 Welds

Sánchez-Amaya¹,

Boukha

González-Rovira

et al. 2012

AMR

Self Cite

View full text Add to dashboard Cite

show abstract

“…Eleven linear parallel laser scans of 15 mm long were made over the samples. The surfaces of the specimens before laser treatments were sandblasted with corindon particles to increase the radiation absorption [6][7][8]. After that, samples were chemically cleaned by acetone.…”

Section: Methodsmentioning

confidence: 99%

Laser remelting of Ti6AL4V using high power diode laser

Amaya-Vázquez¹,

Sánchez-Amaya²,

Boukha³

et al. 2012

AIP Conference Proceedings

Self Cite

View full text Add to dashboard Cite

Titanium alloys present excellent mechanical and corrosion properties, being widely employed in different industries such as medical, aerospace, automotive, petrochemical, nuclear and power generation, etc. Ti6Al4V is the DE alloy most employed in industry. The modification of its properties can be achieved with convectional heat treatments and/or with laser processing. Laser remelting (LR) is a technology applied to Ti6Al4V by other authors with excimer and Nd-Yag laser with pure argon shielding gas to prevent risk of oxidation. In the present contribution, laser remelting has been applied for the first time to Ti6Al4V with a high power diode laser (with pure argon as shielding gas). Results showed that remelted samples (with medium energy densities) have higher microhardness and better corrosion resistance than Ti6Al4V base metal. FIGURE 4. Potentiodynamic polarisation curves of base metal and laser remelted Ti6Al4V samples.FIGURE 5. Rp values of base metal and laser remelted Ti6Al4V samples.

show abstract

“…The authors concluded that in conduction mode the heat transfer is controlled by convection and not by conduction and that the flow of liquid material is caused by surface tension. 50 None of the works mentioned here related the influence of each process parameter and how they will influence conduction laser welding. Most of the work was actually based on modelling just using some welded samples as the starting point.…”

Section: Conduction Laser Weldingmentioning

confidence: 99%