Examination of the effect of Sc on 2000 and 7000 series aluminium alloy castings: for improvements in fusion welding

Norman, A.F.; Hyde, K; Costello, Fionnuala A.; Thompson, S.; Birley, Stuart S.; Prangnell, P.B.

doi:10.1016/s0921-5093(02)00942-5

Cited by 108 publications

(62 citation statements)

References 9 publications

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“…Experiments simulating weld bead solidification by wedge-shaped casting of scandium-containing AA 2024 and AA 7475 aerospace alloys also confirm the positive effects of scandium on the microstructure. [67] B. Welding Process…”

Section: A Materialsmentioning

confidence: 99%

Influence of Filler Alloy Composition and Process Parameters on the Intermetallic Layer Thickness in Single-Sided Cold Metal Transfer Welding of Aluminum-Steel Blanks

Silvayeh

Vallant

Sommitsch

et al. 2017

Metall Mater Trans A

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Hybrid components made of aluminum alloys and high-strength steels are typically used in automotive lightweight applications. Dissimilar joining of these materials is quite challenging; however, it is mandatory in order to produce multimaterial car body structures. Since especially welding of tailored blanks is of utmost interest, single-sided Cold Metal Transfer butt welding of thin sheets of aluminum alloy EN AW 6014 T4 and galvanized dual-phase steel HCT 450 X + ZE 75/75 was experimentally investigated in this study. The influence of different filler alloy compositions and welding process parameters on the thickness of the intermetallic layer, which forms between the weld seam and the steel sheet, was studied. The microstructures of the weld seam and of the intermetallic layer were characterized using conventional optical light microscopy and scanning electron microscopy. The results reveal that increasing the heat input and decreasing the cooling intensity tend to increase the layer thickness. The silicon content of the filler alloy has the strongest influence on the thickness of the intermetallic layer, whereas the magnesium and scandium contents of the filler alloy influence the cracking tendency. The layer thickness is not uniform and shows spatial variations along the bonding interface. The thinnest intermetallic layer (mean thickness < 4 lm) is obtained using the silicon-rich filler Al-3Si-1Mn, but the layer is more than twice as thick when different low-silicon fillers are used.

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Section: A Materialsmentioning

confidence: 99%

Influence of Filler Alloy Composition and Process Parameters on the Intermetallic Layer Thickness in Single-Sided Cold Metal Transfer Welding of Aluminum-Steel Blanks

Silvayeh

Vallant

Sommitsch

et al. 2017

Metall Mater Trans A

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“…Thus, a typical heat treatment for 6013 alloy is a T6, at 180-190 °C for a few hours. In 7475 alloy the typical precipitates are MgZn 2 (η or η') and CuMgAl 2 S phase (Norman et al, 2003). The mechanical data of 7475 alloy were given in the T761 state since it is one of the most common state for this alloy.…”

Section: B Analysis Of the Behaviour Of The Base Alloysmentioning

confidence: 99%

A Simple Approach to the Study of the Ageing Behaviour of Laser Beam and Friction Stir Welds between Similar and Dissimilar Alloys

Badini¹,

Bolivar²,

Antonini³

et al. 2011

Aluminium Alloys, Theory and Applications

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“…2(e)] a fine cast grain structure can be observed. According to the literature [23] this is due to the finely distributed Al 3 Sc x Zr 1 À x dispersoids, which can act as inhomogeneous nucleation sites for grain nucleation.…”

Section: Experimental Workmentioning

confidence: 99%

Local electrochemical properties of laser beam‐welded high‐strength Al–Zn–Mg–Cu alloys

Wloka

Hack²,

Virtanen

2008

Materials & Corrosion

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Butt welds of two high-strength Al-Zn-Mg-Cu alloys with different zinc contents were welded by a laser beam welding technique. Due to the high energy density of the laser beam, the microstructural changes are confined to very thin regions. Electrochemical properties of the weld heat-affected zones are investigated by local electrochemical measurement techniques and correlated with microhardness measurements, macroscopic corrosion behaviour and metallographic sections. It turned out that microelectrochemical techniques, especially the EC-pen is a versatile and easy to handle tool for the resolution of changes in the electrochemical properties across a weld bead. It unveils modifications, which cannot be resolved by hardness measurements. By microcell measurements, local corrosion kinetics can be estimated.

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Examination of the effect of Sc on 2000 and 7000 series aluminium alloy castings: for improvements in fusion welding

Cited by 108 publications

References 9 publications

Influence of Filler Alloy Composition and Process Parameters on the Intermetallic Layer Thickness in Single-Sided Cold Metal Transfer Welding of Aluminum-Steel Blanks

Influence of Filler Alloy Composition and Process Parameters on the Intermetallic Layer Thickness in Single-Sided Cold Metal Transfer Welding of Aluminum-Steel Blanks

A Simple Approach to the Study of the Ageing Behaviour of Laser Beam and Friction Stir Welds between Similar and Dissimilar Alloys

Local electrochemical properties of laser beam‐welded high‐strength Al–Zn–Mg–Cu alloys

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