Investigation and optimization of heat treatment process on tensile behaviour of Ti6Al4V alloy

Omoniyi, Peter; Mahamood, Rasheedat M.; Arthur, Nana Kk; Pityana, Sisa; Akinlabi, Stephen A.; Okamoto, Yasuhiro; Maina, Martin Ruthandi; Akinlabi, Esther Titilayo

doi:10.1002/mawe.202000314

Cited by 4 publications

(3 citation statements)

References 14 publications

(17 reference statements)

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“…The AM welds show a slight reduction in elongation compared to the parent/base material with a tensile strength of 672 MPa. This is presumably due to the α’martensitic microstructure within the fusion zone (FZ), resulting in reduced ductility in Ti6Al4V as also observed by 43 , 44 . The maximum stress of the AM welds shown in Fig.…”

Section: Resultsmentioning

confidence: 88%

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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Section: Resultsmentioning

confidence: 88%

Joint integrity evaluation of laser beam welded additive manufactured Ti6Al4V sheets

Omoniyi

Mahamood

Arthur

et al. 2022

Sci Rep

Self Cite

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“…The microstructure of the Ti6al4V and Ti6al4V eli is made of the alpha (α) and the beta (β) phases at room temperature [3,24]. at the β transus temperature of Ti6al4V (995°C), the phases transform [5]. however, the temperature attained in haZ is said to be around the β transus temperature or higher but lower than the liquidus temperature, even if the boundary between the haZ and FZ can sometimes be challenging to determine.…”

Section: Microstructurementioning

confidence: 99%

“…Titanium alloy grade 5 (Ti6al4V) and titanium alloy grade 23 (Ti6al4V eli) have been tremendously used in various industries, especially in the biomedical sector [1][2][3][4]. 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].…”

Section: Introductionmentioning

confidence: 99%

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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Taguchi-Grey relational analysis driven multi-objective optimization of weld bead geometry and hardness in laser welded Ti6Al4V Alloy

Omoniyi,

Acharya,

Akinlabi

et al. 2024

Int J Interact Des Manuf

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This study used Taguchi-based Grey relational analysis to optimize the bead geometry (bead width and length) and the hardness of laser welded 3 mm thick Ti6Al4V alloy sheets joined using the butt configuration. Firstly, the L9 (32) orthogonal array, with varying laser power and welding speed, was employed to optimize the input parameters (bead length, width, and hardness). The Taguchi optimization showed that the welding speed and laser power have a significant effect on the hardness of the welds and that laser power has a significant impact on the bead length. Meanwhile, the welding parameters had little effect on the bead width. These results were further affirmed with the Analysis of Variance (ANOVA). The Grey relational multi-objective optimization shows the optimized parameters for all responses to be 3 kW laser power and 2.2 m/min welding speed. It is important to note that the combination of Taguchi and Grey relational analysis and ANOVA is useful in optimizing welding parameters to achieve suitable weld properties.

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Investigation and optimization of heat treatment process on tensile behaviour of Ti6Al4V alloy

Cited by 4 publications

References 14 publications

Joint integrity evaluation of laser beam welded additive manufactured Ti6Al4V sheets

Joint integrity evaluation of laser beam welded additive manufactured Ti6Al4V sheets

Archives of Metallurgy and Materials

Taguchi-Grey relational analysis driven multi-objective optimization of weld bead geometry and hardness in laser welded Ti6Al4V Alloy

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