Recent Developments in Non-Conventional Welding of Materials

Leal, Rui M.; Galvão, Ivan

doi:10.3390/ma15010171

Cited by 1 publication

(1 citation statement)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Conventional welding methods might lead to the formation of defects due to the change of state, such as poor solidification and porosity in the nugget zone. FSW allows to improve the weld quality and is widely used in joining AA6082 alloy [19][20][21][22]. Fewer scientific evidence are present in the literature on the effect of processing parameters on the electrochemical behavior of friction stir-welded AA6082 sheets.…”

Section: Introductionmentioning

confidence: 99%

Effect of Processing Parameters on Strength and Corrosion Resistance of Friction Stir-Welded AA6082

Laska

Szkodo

Koszelow

et al. 2022

Metals

View full text Add to dashboard Cite

The friction stir welding method is increasingly attracting interest in the railway sector due to its environmental friendliness, low cost, and ease of producing high-quality joints. Using aluminum alloys reduces the weight of structures, increasing their payload and reducing fuel consumption and running costs. The following paper presents studies on the microstructure, strength, and corrosion resistance of AA6082 aluminum alloy sheets joined via friction stir welding. The sheets were joined by employing two different traverse speeds (200 and 250 mm/min), two different rotational speeds (1000 and 1250 rpm), and two different tool tilt angles (0° and 2°). It was observed that the use of the inclined tool provides finer microstructure in the nugget zone, higher value of microhardness, and better corrosion resistance, compared to the tilt angle equal to 0°. By increasing the value of revolutionary pitch, finer grains are observed in the nugget zone and the measured hardness is higher. It was also observed that the change in process parameters strongly influences the radius of the nugget zone and the potentiodynamic properties of the friction stir-welded material. The joints produced with the tool tilt angle equal to 2°, the tool traverse speed of 200 mm/min, and its rotational speed of 1250 rpm revealed the highest hardness in the nugget zone (about 92% of the base material). Moreover, the finest grain size in the nugget with the average value of 9.8 ± 1.5 µm was found. The lowest corrosion current density equal to 16.029 µA × cm−2 was noted for the sample with the highest strength, which also provides its good corrosion resistance.

show abstract

Section: Introductionmentioning

confidence: 99%