TIG welding of Ti6Al4V alloy: Microstructure, fractography, tensile and microhardness data

Omoniyi, Peter; Mahamood, Modupe; Jen, Tien-Chien; Akinlabi, Esther T.

doi:10.1016/j.dib.2021.107274

Cited by 16 publications

(12 citation statements)

References 6 publications

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“…However, the application of titanium alloys rapidly extended to some other industries due to other important features such as excellent corrosion resistance, good mechanical strength at high temperature, good creep resistance. In addition, titanium alloys have been vastly exploited in biomedical application due to their unique biocompatibility, elastic modules comparable to human bone and high fatigue strength [36]. Among titanium alloys, Ti6Al4V has been the workhorse alloy used extensively in number of industries such as, aerospace, biomedical, gas turbine engine, etc [37].…”

Section: Titanium Alloysmentioning

confidence: 99%

Laser welding of additively manufactured parts - A review

Parchegani,

Piili,

Ganvir

et al. 2023

IOP Conf. Ser.: Mater. Sci. Eng.

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Additive manufacturing (AM) is a process in which parts are built up layer by layer, introducing novel approaches to how parts can be manufactured with less material waste, shorter lead times and lower costs than traditional manufacturing. One of the key advantages of AM over conventional manufacturing is its design flexibility, which enables for manufacturing of parts with highly detailed geometries in one go, leaving out the need for molding, casting, etc. However, due to the chamber size of the machines, the size of AM parts is limited. To overcome this limitation, joining AM parts together or to wrought or cast material has been proposed. Among the various welding technologies, laser welding is considered a suitable candidate for joining AM parts because of its low heat input, resulting in low deformation, high welding speed, and full automation capability. This study will provide a fundamental understanding of laser welding of AM parts by reviewing current research in the field. The possibility of joining most commonly used AM parts such as AlSi10Mg, AISI 316L, Ti6Al4V and Nickel alloy 718 by laser welding are investigated. Furthermore, the effect of laser welding parameters on mechanical and microstructural properties of joined AM parts are discussed.

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Section: Titanium Alloysmentioning

confidence: 99%

Laser welding of additively manufactured parts - A review

Parchegani,

Piili,

Ganvir

et al. 2023

IOP Conf. Ser.: Mater. Sci. Eng.

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“…The Ti-4Al-2V titanium alloy, a representative near-α phase titanium alloy, has been extensively employed in the manufacturing of ship hulls, nuclear heat exchangers, condensers, and various other components [1,2]. Its widespread application is primarily attributed to its attractive properties, which encompass its strength-to-weight ratio, exceptional specific strength and toughness, outstanding welding characteristics, and robust corrosion resistance [3,4]. However, the utilization of Ti-4Al-2V titanium alloy components necessitates high-strength joining mechanisms that guarantee sufficient metallurgical and mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

“…Tungsten Inert Gas (TIG) is one of the most commonly utilized welding techniques for titanium alloys, because it produces high-quality welds with a composition closely resembling the parent metal [4][5][6][7][8]. These welds exhibit significant strength and enduring corrosion resistance.…”

Section: Introductionmentioning

confidence: 99%

An Investigation into the Microstructures and Mechanical Properties of a TIG Welding Joint in Ti-4Al-2V Titanium Alloy

Chen,

Liu,

Zhang

et al. 2024

Metals

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The Ti-4Al-2V (wt. %) titanium alloy has garnered widespread applications across diverse fields due to its exceptional strength-to-weight ratio, high toughness, specific strength, and corrosion resistance. The welding of Ti-4Al-2V titanium alloy components is often necessary in manufacturing processes, where the reliability of a welded joint critically influences the overall service life of these components. Consequently, a comprehensive understanding of the welded joint’s microstructure and mechanical properties is imperative. In this study, Ti-4Al-2V titanium alloy was welded using multi-layer and multi-pass TIG welding techniques, and a detailed examination was conducted to analyze the microstructure and grain morphology of each microzone of the welded joint. The results revealed the presence of an initial α phase and a secondary lamellar α phase in the heat affected zone (HAZ). Meanwhile, the fusion zone (FZ) primarily comprised a coarse secondary α phase and a small amount of an acicular martensitic α’ phase. Both the recrystallization zone and the superheated zone exhibited a distinct preferred orientation, with grains smaller than 10 μm accounting for 65.9% and 55.1%, respectively. To assess the mechanical properties of the various microzones and the typical microstructure within the welded joint, nanoindentation tests were performed. The results indicated that the recrystallization zone possessed a higher nanohardness (3.753 GPa) than the incomplete recrystallization zone (3.563 GPa) and the superheated zone (3.48 GPa). Among all the microzones, the FZ exhibited the lowest average nanohardness (3.058 GPa). Notably, the basket-weave microstructure demonstrated the highest average nanohardness, reaching 3.93 GPa. This was followed by the fine-grain microstructure, which possessed a slightly lower nanohardness. The Widmanstätten microstructure, on the other hand, exhibited the lowest nanohardness among the three microstructures within the HAZ. Therefore, the basket-weave microstructure stands out as the most desirable microstructure to achieve in the welded joint. In summary, this study provides a comprehensive characterization and analysis of the microstructure and properties of Ti-4Al-2V titanium alloy TIG welds, aiming to contribute to the optimization of the TIG welding process for Ti-4Al-2V titanium alloy.

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“…The aerospace industry has achieved an excellent buy-to-fly ratio with the LMD process, and the repair of components has also been achieved 7 , 8 . Titanium and its alloys have also been beneficial in the fourth industrial revolutionized industries due to its lightweight to strength ratio and excellent corrosion resistivity 9 . The aerospace industry has used titanium and its alloys to design and manufacture fuselage, turbine blades, shafts, and wings.…”

Section: Introductionmentioning

confidence: 99%

Joint integrity evaluation of laser beam welded additive manufactured Ti6Al4V sheets

Omoniyi

Mahamood

Arthur

et al. 2022

Sci Rep

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The feasibility of joining laser metal deposited Ti6Al4V sheets using laser beam welding was investigated in this article. The additive manufactured sheets were joined using a 3 kW CW YLS-2000-TR ytterbium laser system. The mechanical properties and microstructure of the welded additive manufactured parts (AM welds) were compared with those of the wrought sheets welded using the same laser process. The welds were characterized and compared in terms of bead geometry, microhardness, tensile strength, fractography, and microstructure. The differences in characteristics are majorly found in the width of the bead and tensile strength. The bead width of AM welds appear wider than the wrought welds, and the wrought welds exhibited higher tensile strength and ductility than the AM welds.

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TIG welding of Ti6Al4V alloy: Microstructure, fractography, tensile and microhardness data

Cited by 16 publications

References 6 publications

Laser welding of additively manufactured parts - A review

Laser welding of additively manufactured parts - A review

An Investigation into the Microstructures and Mechanical Properties of a TIG Welding Joint in Ti-4Al-2V Titanium Alloy

Joint integrity evaluation of laser beam welded additive manufactured Ti6Al4V sheets

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