Microstructure and Mechanical Features of Electron Beam Welded Dissimilar Titanium Alloys: Ti–10V–2Fe–3Al and Ti–6Al–4V

Utama, Muhammad Iman; Park, Nokeun; Baek, Eung Ryul

doi:10.1007/s12540-018-0197-1

Cited by 11 publications

(6 citation statements)

References 28 publications

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“…This phenomenon can be correlated with the alteration of the α' and α m microstructural morphology. These hardness values are generally higher than those in Ti-6Al-4V produced using other fabrication methods 14,15) and the substrate's mean hardness (356 HV). Furthermore, it is noticed the hardness values increase with the increasing powder feed rate, and the specimen with the powder feed rate of 9 g•min -1 exhibits the highest hardness values among the other specimens in this study.…”

Section: Layermentioning

confidence: 66%

The Effect of Decomposed Microstructure on Mechanical Properties of Additively Manufactured Ti-6Al-4V Alloy

Nursyifaulkhair

Park

Baek

2021

Journal of Welding and Joining

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This study investigated the effect of microstructural decomposition on the mechanical properties of additively manufactured Ti-6Al-4V by directed energy deposition. The formation of ' martensite and massive phase ( m ) was observed in the deposited layers. The ' and m in the lastly deposited layer appeared as a needle-shaped and a sub-lamellar structure, respectively. However, the morphology of ' and m was decomposed in the lower layers due to the intrinsic heat treatment. Moreover, The heat conduction rate calculation showed that the lower powder feed rate generates more heat conduction. Therefore, the microstructure was further decomposed for the specimen with a lower powder feed rate. These phenomena consequently affected the mechanical properties and fracture behavior of the Ti-6Al-4V alloy.

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Section: Layermentioning

confidence: 66%

The Effect of Decomposed Microstructure on Mechanical Properties of Additively Manufactured Ti-6Al-4V Alloy

Nursyifaulkhair

Park

Baek

2021

Journal of Welding and Joining

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“…The heat-affected zone (HAZ) temperature was taken above 600 °C. This assumption was obtained from the existing literature for Ti-6Al-4V alloy [24,25]. As reported in the literature, the welding process and uncertainty were the factors for fixing this HAZ.…”

Section: Resultsmentioning

confidence: 98%

Experimental and numerical studies on gas tungsten arc welding of Ti–6Al–4V tailor-welded blank

Karpagaraj

Kumar

Thiyaneshwaran

et al. 2020

J Braz. Soc. Mech. Sci. Eng.

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The effect of gas tungsten arc welding (GTAW) process parameters and its impact on the titanium TWB was studied experimentally as well as using numerical simulation. Bead characteristics of BoP trials (bead on plate) were analyzed based on Taguchi L 27 orthogonal array by taking welding current (115 A, 125 A, 135 A), welding speed (4.1 mm/s, 5.8 mm/s, 7.5 mm/s) and arc length (3 mm, 4 mm, 5 mm) as process parameters. The bead width and depth of penetration for all trials were measured by using the weld expert system. Based on the bead characteristics, optimized GTAW process parameters (135 A, 4.1 mm/s and 3 mm) were identified for making the TWB by joining 2-1.6-mm-thick Ti-6Al-4V sheets. The tensile test of the prepared Ti-6Al-4V TWB was conducted in the universal testing machine. The COMSOL and ABAQUS software packages were used for the numerical simulation of TWB to assess the bead profile and tensile properties. The prediction made from the temperature distribution curve related to phase change near weld zone, exactly matched with the experimental work. The joint strength of TWB observed to be around 982 MPa and 1005 MPa was evaluated experimentally and conducting ABAQUS simulation work. The tensile test results were comparable with each other within the acceptable error level.

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“…A possible reason for this behavior could be the formation of finely dispersed α″–precipitations, see. [ 45 ] Due to the high cooling rates during additive manufacturing, the supersaturated condition eases the formation of these precipitates. This is also supported by the fact that a higher torch speed leads to a significant increase in hardness compared to slower welding speeds.…”

Section: Heat Treatmentsmentioning

confidence: 99%

Development of Microstructure and Mechanical Properties of TiAl6V4 Processed by Wire and Arc Additive Manufacturing

et al. 2022

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Wire and arc additive manufacturing (WAAM) has the potential to significantly reduce material waste due to the milling of components made of TiAl6V4 (Ti‐64). To keep up with the market development, this resource‐efficient technology is becoming increasingly important to achieve climate policy goals. Therefore, this study not only focuses on the influence of different process parameters, such as torch and wire feed speed, but also different gas mixtures on the microstructure and related mechanical properties, as well as on the scalability by investigating single‐ to multilayer welded structures. The wire feed speed is found to have a major influence on the geometry and mechanical properties. The use of different process gases, i.e., argon (Ar), helium (He), and a mixture of 70% He and 30% Ar neither significantly affect the microstructure nor the mechanical properties. It is also found that a solution heat treatment followed by an annealing step degrades mechanical properties, while an ordinary stress‐relief heat treatment leads to improved mechanical properties. It is shown that by adapting WAAM process and heat treatment parameters, mechanical properties of additively produced specimens can be achieved, which are fully comparable to milled components.

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Microstructure and Mechanical Features of Electron Beam Welded Dissimilar Titanium Alloys: Ti–10V–2Fe–3Al and Ti–6Al–4V

Cited by 11 publications

References 28 publications

The Effect of Decomposed Microstructure on Mechanical Properties of Additively Manufactured Ti-6Al-4V Alloy

The Effect of Decomposed Microstructure on Mechanical Properties of Additively Manufactured Ti-6Al-4V Alloy

Experimental and numerical studies on gas tungsten arc welding of Ti–6Al–4V tailor-welded blank

Development of Microstructure and Mechanical Properties of TiAl6V4 Processed by Wire and Arc Additive Manufacturing

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