Development of a Friction Welded Bimetallic Joints Between Titanium and 304 Austenitic Stainless Steel

Cheepu, Muralimohan; Muthupandi, V.; Srinivas, B.; Sivaprasad, K.

doi:10.1007/978-3-319-53556-2_73

Cited by 24 publications

(18 citation statements)

References 16 publications

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“…The fracture morphologies and crack direction are discussed in fractography section. As discussed earlier, microstructural changes with the formation of mixed layers in the joint interface could be one of the reason for reduction in joint strength [33][34][35][36][37][38] . The correlated values of width of mixed region to the tensile strength and width of mixed region to the burn-off length confirms the effect burn-off length on the joint properties.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Effect of Burn-off Length on the Properties of Friction Welded Dissimilar Steel Bars

Cheepu

Seong

2019

Journal of Welding and Joining

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Friction welding is one of the solid state welding process and it is very popular method to join cylindrical components of similar and dissimilar metals. It is most economical and high productive method for various applications of aerospace, automotive and chemical industries. The joining of austenitic stainless steels using fusion welding methods associated with many problems such as solidification cracks and grain growth. To alleviate these problems, friction welding method has been used for joining of austenitic stainless steel to carbon steel. The process parameters such as burn-off length is one of the significant welding condition to govern the heat generation and coefficient of friction during welding. Burn-off length of 1 mm to 6 mm was selected to investigate its effect on mechanical properties and weld interface characteristics. An optical, scanning electron microscope and electron backscattered diffraction analyses were used to characterize the weld interface properties. The mechanical properties of the joints were evaluated by using hardness, tensile and fatigue tests. It is observed that, strength of the joints were increased with increasing of burn-off length up to optimum value of 4 mm and starts to decrease on further increasing of burn-off length.

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Section: Mechanical Propertiesmentioning

confidence: 99%

Effect of Burn-off Length on the Properties of Friction Welded Dissimilar Steel Bars

Cheepu

Seong

2019

Journal of Welding and Joining

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“…One of the rather attractive methods for obtaining compounds of such bimetallic plates can be friction welding, which has low heat injection and high accuracy. In this case, to eliminate IMP, it is proposed to insert aluminum as an intermediate layer between titanium and stainless steel [3]. The disadvantage of this approach is the high mechanical loads on the welded edges, which requires their very strong fastening, which cannot be developed for all cases of connections.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…It follows from the review of works [2][3][4][5][6][7][8] that the use of fusion welding to obtain permanent butt joints of steel plates clad with titanium is associated with the threat of the formation of IMP. The basis of such a threat is the course of the corresponding reactions between Ti and Fe at melting points and above.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Features of structure formation when surfacing steel (iron) on titanium with plasma sprayed coatings in the technology of obtaining butt joint of bimetallic plates "titanium – steel"

Korzhyk

Khaskin

Ganushchak

et al. 2023

EEJET

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The object of this study is structural formation during the surfacing of steel (iron) on titanium with plasma-sprayed coatings to obtain a butt connection of titanium-steel bimetallic plates. The task to be solved was to devise a technology for applying a barrier layer between titanium and steel to obtain a defect-free butt joint of the edges of bimetallic sheets of carbon steel, clad with a layer of titanium, under conditions of arc or plasma surfacing of carbon steel on titanium. The application of the barrier layer was carried out by plasma spraying of steel wire or iron powder. In this case, a coating with a thickness of 150...750 μm was applied on Grade2 titanium, on which 1–2 mm thick layers of materials similar to the sprayed ones were deposited by arc and plasma deposition. It was established that during spraying with subsequent surfacing of steel wire or iron powder, the main technological factors for eliminating cracks in the resulting compound are the thickness of the sprayed coating and the amount of linear surfacing energy. The thickness of the sprayed coating was selected (at least 400...600 microns) followed by plasma surfacing of ER70S-6 steel wire with a diameter of 1.0 mm or CNPC-Fe200 iron powder with unit energy up to ~200...250 J/mm. A defect-free transition layer from titanium to steel was obtained. It is a continuous layer with a thickness of 50–60 microns, consisting of intermetalides FeTi and FeTi2, as well as a β-phase titanium with an enhanced iron content, which retains certain ductility without cracks and other defects. With the help of the devised approach for connecting titanium-steel bimetallic edges, it is planned to manufacture seam bimetallic pipes for main pipelines to transport oil and gas raw materials extracted from wells.

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“…This also helps to improve the joint strength and gives better bonding strength [12]. The use of interlayer will also help to reduce the thermal expansion mismatch between dissimilar metals during the welding process.…”

Section: Introductionmentioning

confidence: 99%

Joining of AA 6061/Ti–6Al–4V with zinc interlayer using friction welding process

Velu¹,

Hynes²,

Vignesh³

2019

J Braz. Soc. Mech. Sci. Eng.

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The formation of intermetallic phases consisting of intermetallic compounds during welding of aluminium/titanium joints is a challenge to the welding processes, in the last two decades. Friction welding is attempted to reduce the formation of intermetallic phases through inserting the interlayer material. In recent years, the number of approaches has been used to insert the interlayer material to avoid metallurgical phases at the weld interface. In this paper, the new technique of electrodeposited zinc coating on titanium substrate acted as an interlayer. Different welding joints were made by varying the interlayer thickness, and henceforth, the characterization is almost done against the mechanical and microstructure of the weld interface. The result shows that the specimen joint having 5 µm Zn interlayer has higher mechanical strength when compared to the specimen joints having 2 µm and 3 µm Zn interlayer. The results of the EDAX line scan concentration profile reveal that across the joint interface there is diffusion of the zinc interlayer into the aluminium zone. The microstructural investigation has been carried out at the joint interface of titanium and aluminium alloy with zinc as an interlayer. It is revealed that the formation of the thin interfacial reaction layer occurs in between the zinc and titanium zone. The intermetallic compounds are formed here in this region, and they are identified as secondary phases of the reaction between zinc and titanium.

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Development of a Friction Welded Bimetallic Joints Between Titanium and 304 Austenitic Stainless Steel

Cited by 24 publications

References 16 publications

Effect of Burn-off Length on the Properties of Friction Welded Dissimilar Steel Bars

Effect of Burn-off Length on the Properties of Friction Welded Dissimilar Steel Bars

Features of structure formation when surfacing steel (iron) on titanium with plasma sprayed coatings in the technology of obtaining butt joint of bimetallic plates "titanium – steel"

Joining of AA 6061/Ti–6Al–4V with zinc interlayer using friction welding process

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