Fibre laser welding of dissimilar alloys of Ti-6Al-4V and Inconel 718 for aerospace applications

Chen, Hui‐Chi; Pinkerton, Andrew J.; Li, Lin

doi:10.1007/s00170-010-2791-3

Cited by 194 publications

(49 citation statements)

References 27 publications

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“…high welding speed, narrow and deep weld, small HAZ, good mechanical properties, low structural distortion, etc. Moreover, the excellent propagation ability and accessibility make the LBW a powerful tool to produce threedimensional structures with complicated features [13]. Thus, the structural integrity can be largely improved and the weldment weight is reduced through the optimisation of materials and structures.…”

Section: Introductionmentioning

confidence: 99%

Effect of porosities on tensile properties of laser-welded Al-Li alloy: an experimental and modelling study

Liu

Lee

et al. 2017

Int J Adv Manuf Technol

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Aluminium-lithium (Al-Li) alloys are very attractive for aerospace applications due to their outstanding properties, such as high specific strength, high rigidity and good resistance to corrosion and fatigue, compared to conventional aluminium alloys. The butt joints of Al-Li 2A97-T3 alloy sheet produced by fibre laser welding with ER2319 filler wire were investigated in this paper. Uniaxial tensile tests have been performed to determine the nominal mechanical properties of the joints with and without porosities. In addition, a defect zone was defined in the welded specimens to investigate the effects of porosity on the joint tensile behaviour. The post-weld strength prediction (PWSP) model in a previous study has been extended by including the effects of the porosity in the welds to predict the overall response of the butt joints. The experimental and the modelling results show a good agreement, with the yield strength having a deviation lower than 5%. Both the yield strength and the ductility of the tensile specimens were observed to have decreased with the presence of porosities. The porosities aggravated the inhomogeneous deformation in the weld zone. Higher strain rate was found in the defect area than the remaining weld zone during plastic deformation, as the porosity in the specimen caused inhomogeneous deformation. It was found that this accelerated the failure of the specimen and lowered the global ductility significantly.

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Section: Introductionmentioning

confidence: 99%

Effect of porosities on tensile properties of laser-welded Al-Li alloy: an experimental and modelling study

Liu

Lee

et al. 2017

Int J Adv Manuf Technol

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“…Ni-based super alloys, such as Inconel 718, Inconel 628 and Inconel 600, are also extensively employed in the aerospace industry because of their superior mechanical properties and excellent oxidation resistance at elevated temperatures. They are suitable to be manufactured as components in high-temperature regions of aero engines and gas turbines [2]. For extreme applications such as in Formula 1 race car exhaust systems, heat and pipe stress are high, meaning that Inconel is best suited due to its ability to withstand extreme heat levels [3].…”

Section: Introductionmentioning

confidence: 99%

“…Ti-Ni dissimilar butt welding using CO 2 laser showed asymmetric weld shapes and brittle intermetallic compounds. NiTi 2 and Ni 3 Ti were formed with macroscopic cracks in the weld [12]. Carpinteri et al investigated welded T-joints and stated that fatigue failure in structures is caused by stress concentrators, which are also the preferred points for crack initiation [13].…”

Section: Introductionmentioning

confidence: 99%

Influence of the Overlapping Factor and Welding Speed on T-Joint Welding of Ti6Al4V and Inconel 600 Using Low-Power Fiber Laser

Janasekaran

Tan

Yusof

et al. 2016

Metals

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Double-sided laser beam welding of skin-stringer joints is an established method for many applications. However, in certain cases with limited accessibility, single-sided laser beam joining is considered. In the present study, single-sided welding of titanium alloy Ti6Al4V and nickel-based alloy Inconel 600 in a T-joint configuration was carried out using continuous-wave (CW), low-power Ytterbium (Yb)-fiber laser. The influence of the overlapping factor and welding speed of the laser beam on weld morphology and properties was investigated using scanning electron microscopy (SEM) and X-ray diffraction (XRD), respectively. XRD analysis revealed the presence of intermetallic layers containing NiTi and NiTi 2 at the skin-stringer joint. The strength of the joints was evaluated using pull testing, while the hardness of the joints was analyzed using Vickers hardness measurement at the base metal (BM), fusion zone (FZ) and heat-affected zone (HAZ). The results showed that the highest force needed to break the samples apart was approximately 150 N at a laser welding power of 250 W, welding speed of 40 mm/s and overlapping factor of 50%. During low-power single-sided laser welding, the properties of the T-joints were affected by the overlapping factor and laser welding speed.

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“…From an industrialization perspective, fiber lasers have remarkable advantages including high energy efficiency, good beam quality, flexible fiber beam delivery, small footprint, good process versatility, automation capacity, and low overall costs. 18 In this work, laser deposition with wire feed was performed on service exposed PM substrates. The objective To understand the tensile failure mechanisms, the fracture surfaces of the PM, DLD, and DLD-PM samples were systematically analyzed using SEM.…”

Section: Introductionmentioning

confidence: 99%

Tensile properties of laser additive manufactured Inconel 718 using filler wire

et al. 2014

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/npsi/ctrl?action=rtdoc&an=21275548&lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?action=rtdoc&an=21275548&lang=fr READ THESE TERMS AND CONDITIONS CAREFULLY BEFORE USING THIS WEBSITE.http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en Vous avez des questions? Nous pouvons vous aider. Pour communiquer directement avec un auteur, consultez la première page de la revue dans laquelle son article a été publié afin de trouver ses coordonnées. Si vous n'arrivez pas à les repérer, communiquez avec nous à PublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. Questions?Contact the NRC Publications Archive team at PublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. If you wish to email the authors directly, please see the first page of the publication for their contact information. NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://doi.org/10. 1557/jmr.2014.199 Journal of Materials Research, 29, 17, pp. 2006Research, 29, 17, pp. -2020Research, 29, 17, pp. , 2014 Tensile properties of laser additive manufactured Inconel 718 using filler wire A 5 kW continuous wave fiber laser welding system was used to deposit INCONEL Ò alloy 718 (IN718) on service-exposed IN718 parent metal (PM) substrates using filler wire addition. The microstructure of the deposits was characterized in the fully heat treated condition. The service-exposed IN718 PM and the direct laser deposited (DLD) specimens were then evaluated through room temperature tensile testing. The yield and tensile strengths were well above the minimum values, as defined in the aerospace specifications AMS 5596K and 5663M. However, the ductility at room temperature of the DLD and DLD-PM samples was slightly lower than that specified in AMS 5596K and 5663M. The tensile fracture surfaces of the service-exposed IN718 PM, DLD, and DLD-PM specimens were analyzed using scanning electron microscopy (SEM), and the tensile failure mechanisms are discussed in detail, particularly for the important roles of the secondary particles (MC carbides) and intermetallics (platelet Ni 3 Nb-d and Laves phases).

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Fibre laser welding of dissimilar alloys of Ti-6Al-4V and Inconel 718 for aerospace applications

Cited by 194 publications

References 27 publications

Effect of porosities on tensile properties of laser-welded Al-Li alloy: an experimental and modelling study

Effect of porosities on tensile properties of laser-welded Al-Li alloy: an experimental and modelling study

Influence of the Overlapping Factor and Welding Speed on T-Joint Welding of Ti6Al4V and Inconel 600 Using Low-Power Fiber Laser

Tensile properties of laser additive manufactured Inconel 718 using filler wire

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