Joint integrity evaluation of laser beam welded additive manufactured Ti6Al4V sheets

Omoniyi, Peter; Mahamood, Rasheedat M.; Arthur, Nana Kk; Pityana, Sisa; Skhosane, Samuel; Okamoto, Yasuhiro; Shinonaga, Togo; Maina, Martin Ruthandi; Jen, Tien‐Chien; Akinlabi, Esther T.

doi:10.1038/s41598-022-08122-2

Cited by 8 publications

(5 citation statements)

References 37 publications

(31 reference statements)

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“…The FZ has the highest hardness level ranging from 362.7-381.3 hV as a result of the α' martensitic microstructure formed during the cooling process of the melt pool. according to Omoniyi et al, [8,10], melt pool cooling above the critical cooling rate of 410°C/s results in Fig. 7.…”

Section: Hardnessmentioning

confidence: 77%

“…Welding involves the application of heat to melt metal, which means the metal to be joined attains the liquidus temperature before cooling [23]. The weld region is characterized by the fusion zone (FZ), which is the portion that attains the highest temperature, the heat affected zone (haZ), which is close to the FZ but attains a temperature lower than that of the FZ, and the base metal (bm) which is also the parent metal [8,10], as shown in Figs. 2-5.…”

Section: Microstructurementioning

confidence: 99%

“…bone implants have been made of Ti6al4V eli and Ti6al4V due to the material's high corrosion resistance and its shear strength [5][6][7]. Several fusion welding techniques, such as laser welding, metal inert gas welding, and tungsten inert gas welding, have been commonly used in joining Ti6al4V [8][9][10]. however, tungsten inert gas (TiG) provides a good joining strength and is relatively economical compared to other techniques [11].…”

Section: Introductionmentioning

confidence: 99%

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Archives of Metallurgy and Materials

2022

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Titanium and its alloys have significant uses in the biomedical, chemical, and aerospace industries. in this article, the current and gas flow rates were varied using Taguchi's experiment design. The mechanical properties of the welded joint made using tungsten inert gas (TiG) welding and Ti6al4V eli as filler metal was characterized using the microstructure, microhardness, and tensile strength. The joint was classified into three regions, namely, fusion zone (FZ), heat affected zone (haZ), and base metal (bm). Results show martensitic microstructure within the fusion zone (FZ) and the heat affected zone (haZ), which resulted in an increased hardness within the fusion and heat affected zone.

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Section: Hardnessmentioning

confidence: 77%

Section: Microstructurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Archives of Metallurgy and Materials

2022

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“…CAD/CAM is of a great use in additive manufacturing, as CAD are used in creating the designs which are converted to streolitic files, read by printers (CAM) to form the desired shape [16]. All AM techniques such as direct energy deposition (DED), powder bed fusion (PBF) all make use of CAD designs [17]. 2.2.2 Subtractive manufacturing Lynn et al [19] described voxel-centered CAM systems that enable direct digital subtractive manufacturing of an assembly-free system.…”

Section: Additive Manufacturingmentioning

confidence: 99%

Present and Future Impacts of Computer-Aided Design/ Computer-Aided Manufacturing (CAD/CAM)

Ikubanni¹,

Adeleke²,

Agboola³

et al. 2022

JESA

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The world is a growing place with great technological advancement in all areas of life. For some decades now, various disciplines and industries have been engaged in using Computer-Aided Design/Computer-Aided Manufacturing (CAD/CAM) across different nations. CAD/CAM utilizes computers to integrate design and manufacturing processes for quality product attainment. This review article examined the present impacts of CAD/CAM on some sectors such as architecture, manufacturing, engineering and design, electronics, automobile, shipbuilding, aerospace, and medicine. Highlights on some applications and future impacts of CAD/CAM have also been discussed. The numerous impacts of CAD/CAM are discussed in the study. It was concluded that CAD/CAM had become integral parts of our world to ease production against traditional methods. The study recommended more research focus on biomaterials for 3-D bioprinting for tissue engineering applications.

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“…e greater heat input of TIG welding causes coarsening of grain in the fusion zone microstructure, wider heat a ected zone (HAZ), softening in HAZ, distortion, and weld metal contamination [7,8,9]. e greater energy density processes such as laser beam (LBW) [10,11,12] and electron beam (EB) welding [13,14,15] are also utilized to join Ti alloys. Nevertheless, a greater cooling rate in LBW and EBW causes problems such as cracking in weld metal and porosity defects [4,16].…”

Section: Introductionmentioning

confidence: 99%

Microstructural Features, Tensile Properties, and Impact Toughness of Linear Friction Welded High-Temperature Alloy Joints for Blisk Assembly Applications

Mukundhan

Sivaraj

Balasubramanian

et al. 2022

Advances in Materials Science and Engineering

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The main objective of this investigation is to analyze the microstructure, tensile properties, and impact toughness of Ti6Al4V alloy joints developed using optimized parameters of linear friction welding (LFW) for gas turbine blisk assembly applications. The 6 mm thick plates of Ti6Al4V alloy were joined using a friction time of 40 sec, a friction pressure of 20 MPa, a forging pressure of 10 MPa, a forging time of 3 sec, and an oscillating frequency of 14 Hz. The different regions of joints were analyzed using a stereo zoom microscope. Optical and scanning electron microscope (SEM) was used for analysing the microstructural features of joints. The room temperature tensile properties, hardness, and impact toughness of LFW-Ti6Al4V alloy joints were evaluated and correlated to the microstructural features of weld region. The fractured sections of tensile and impact toughness specimens of joints were analyzed using SEM and the failure of joints was correlated with the hardness survey. Results showed that the LFW-Ti6Al4V alloy joints developed using the optimized parameters exhibited a tensile strength (TS) of 1015 MPa, a yield strength (YS) of 940 MPa, and an elongation (EL) of 8%. The joints revealed 98.54%, 95.91%, and 66.67% of tensile strength, yield strength, and ductility of the parent metal. The LFW joints disclosed impact toughness (IT) of 17.2 J which is 89.77% impact toughness of the parent metal. The superior tensile properties and impact toughness of LFW-Ti6Al4V alloy joints are mainly attributed to a greater degree of refinement of α + β grains in the weld interface, which offers greater resistance to tensile deformation and crack propagation.

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Joint integrity evaluation of laser beam welded additive manufactured Ti6Al4V sheets

Cited by 8 publications

References 37 publications

Archives of Metallurgy and Materials

Archives of Metallurgy and Materials

Present and Future Impacts of Computer-Aided Design/ Computer-Aided Manufacturing (CAD/CAM)

Microstructural Features, Tensile Properties, and Impact Toughness of Linear Friction Welded High-Temperature Alloy Joints for Blisk Assembly Applications

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