Laser processing of aluminum–titanium-tailored blanks

Kreimeyer, Michael; Wagner, Florian; Vollertsen, Frank

doi:10.1016/j.optlaseng.2004.07.005

Cited by 97 publications

(40 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In butt configuration, the shift of the laser beam from the joint line is considered as a key parameter for successful joining. Kreimeyer et al (2005) reported the successful joining of AA6016 to Ti6Al4V with CO 2 laser shifted at 0.3-0.5 mm to titanium side. In this case, aluminum side is only slightly melted due to its high thermal diffusivity, and 80% of the strength of AA6016 can be attained.…”

Section: Introductionmentioning

confidence: 99%

Direct keyhole laser welding of aluminum alloy AA5754 to titanium alloy Ti6Al4V

Tomashchuk

Sallamand

Cicala

et al. 2015

Journal of Materials Processing Technology

115

View full text Add to dashboard Cite

is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. a b s t r a c tThe tensile strength of direct AA5754/Ti6Al4V joints performed by high speed Yb:YAG laser welding is found to be determined by morphology and phase content of dissimilar interface formed between contacting Al-rich and Ti-rich melted zones. Three types of contact interfaces were observed: (1) Maximal linear tensile force (220 N/mm for 2 mm thick weld) can be attained when thin contact interface is formed. In this case, the fracture starts in intermetallics-rich zone but propagates mainly in Al-rich melted zone, when in other cases it occurs in brittle intermetallic layers.

show abstract

Section: Introductionmentioning

confidence: 99%

Direct keyhole laser welding of aluminum alloy AA5754 to titanium alloy Ti6Al4V

Tomashchuk

Sallamand

Cicala

et al. 2015

Journal of Materials Processing Technology

115

View full text Add to dashboard Cite

show abstract

“…As shown in Figure 6b, the S decreases sharply from 4.56 to 2.64 mm 2 , and then decreases slowly from 2.22 to 1.92 mm 2 with increasing laser offsets from 0.3 to 0.7 mm. The decrease of S with increasing laser beam offsets is due to the fact that the heat input at the interface is decreased continuously with increasing laser beam offsets [9]. This indicates that the travel speeds and laser beam offsets directly impact the molten zone of the Al alloy side, which contributes to the final weld quality of the interface.…”

Section: Cross Sections Of Al/steel Butt Jointsmentioning

confidence: 96%

“…It is well known that dissimilar joining Al/steel joints is extremely challenging due to the huge disparity in thermal-physical properties between steels and Al alloys [4,8,9]. One of the main issues associated with welding Al/steel joints is the formation of thick intermetallic compound (IMC) layers at the interface [10,11].…”

Section: Introductionmentioning

confidence: 99%

Microstructures and Mechanical Properties of Dissimilar Al/Steel Butt Joints Produced by Autogenous Laser Keyhole Welding

Cui

Chen

Qian

et al. 2017

Metals

View full text Add to dashboard Cite

Dissimilar Al/steel butt joints of 6.0 mm thick plates have been achieved using fiber laser keyhole welding autogenously. The cross sections, interface microstructures, hardness and tensile properties of Al/steel butt joints obtained under different travel speeds and laser beam offsets were investigated. The phase morphology and thickness of the intermetallic compound (IMC) layers at the interface were analyzed by scanning electronic microscopes (SEM) using the energy-dispersive spectrometry (EDS) and electron back-scattered diffraction (EBSD) techniques. The results show that travel speeds and laser beam offsets are of considerable importance for the weld shape, morphology and thickness of IMC layers, and ultimate tensile strength (UTS) of Al/steel butt joints. This proves that the IMC layers consist of Fe 2 Al 5 phases and Fe 4 Al 13 phases by EBSD phase mapping. Increasing laser beam offsets from 0.3 mm to 0.7 mm significantly decreases the quantity of Fe 4 Al 13 phases and the thickness of Fe 2 Al 5 layers at the interface. During tensile processing, the Fe 2 Al 5 layer with the weakest bonding strength is the most brittle region at the interface. However, an intergranular fracture that occurred at Fe 2 Al 5 layers leads to a relatively high UTS of Al/steel butt joints.

show abstract

“…Usually, brazing was carried out with a classical conduction regime. However, with the objective of increasing the scanning speed, Kreimeyer et al (2005) have optimized butt-brazing of 2 mm-thick Ti6Al4V to AA6016 sheets with the use of a laser-induced key-hole positioned in the aluminum side, without using fluxing of the interface, and with laser offsets of 0.3 to 1 mm. With the use of a combined numerical-experimental approach, they have also defined an optimum process window to induce sufficiently thick (0.7-1.5 µm) TiAl 3 intermetallic phases in key-hole regime.…”

Section: Introductionmentioning

confidence: 99%

Generation and characterization of T40/A5754 interfaces with lasers

Peyre

Berthe

Dal

et al. 2014

Journal of Materials Processing Technology

View full text Add to dashboard Cite

is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. -Vol. 214, p.1946-Vol. 214, p. -1953-Vol. 214, p. -2014 Any correspondence concerning this service should be sent to the repository Laser-induced reactive wetting and brazing of T40 titanium with A5754 aluminum alloy with 1.5 mm thickness was carried out in lap-joint configuration, with or without the use of Al5Si filler wire. A 2.4 mm diameter laser spot was positioned on the aluminum side to provoke spreading and wetting of the lower titanium sheet, with relatively low scanning speeds (0.1 to 0.6 m/min). Process conditions did not play a very significant role on mechanical strengths, which were shown to reach 250-300 N/mm on a large range of laser power and scanning speeds. In all cases considered, the fracture during tensile testing occurred next to the TiAl 3 interface, but in the aluminum fusion zone. In a second step, we have investigated the interfacial resistance with the LASAT bond strength tester, based upon the generation and propagation of laser-induced shock waves. This allowed us estimating a uniaxial bond strength of 0.68 GPa for the T40/A5754 interface under dynamic loading conditions.

show abstract

Laser processing of aluminum–titanium-tailored blanks

Cited by 97 publications

References 3 publications

Direct keyhole laser welding of aluminum alloy AA5754 to titanium alloy Ti6Al4V

Direct keyhole laser welding of aluminum alloy AA5754 to titanium alloy Ti6Al4V

Microstructures and Mechanical Properties of Dissimilar Al/Steel Butt Joints Produced by Autogenous Laser Keyhole Welding

Generation and characterization of T40/A5754 interfaces with lasers

Contact Info

Product

Resources

About