Crack path selection at the interface of wrought and wire+arc additive manufactured Ti–6Al–4V

Zhang, Jikui; Zhang, Xiang; Wang, Xueyuan; Ding, Jialuo; Traore, Yeli; Paddea, Sanjooram; Williams, Stewart

doi:10.1016/j.matdes.2016.05.027

Cited by 57 publications

(38 citation statements)

References 33 publications

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“…Residual stresses in type A, B and C specimens were measured by the contour method and also calculated by FEM by inputting residual stresses in the original WAAM® wall (also measured by the contour method) before extracting these C(T) specimens. Details can be found in . As a summary, residual stresses are shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

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Fracture toughness and fatigue crack growth rate properties in wire + arc additive manufactured Ti‐6Al‐4V

Zhang

Martina

Ding

et al. 2016

Fatigue Fract Eng Mat Struct

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A B S T R A C T This paper presents an experimental investigation of the fracture and fatigue crack growth properties of Ti-6Al-4V produced by the Wire + Arc Additive Manufacture (WAAM®) process. First, fracture toughness was measured for two different orientations with respect to the build direction; the effect of wire oxygen content and build strategy were also evaluated in the light of microstructure examination. Second, fatigue crack growth rates were measured for fully additive manufactured samples, as well as for samples containing an interface between WAAM® and wrought materials. The latter category covers five different scenarios of crack location and orientation with respect to the interface. Fatigue crack growth rates are compared with that of the wrought or WAAM® alone conditions. Crack growth trajectory of these tests is discussed in relation to the microstructure characteristics.Keywords fatigue crack growth; fracture toughness; microstructure; titanium; wire + arc additive manufacture. N O M E N C L A T U R Ea = Crack length B = Compact tension specimen thickness K IC = Plane-strain fracture toughness K Q = Conditional fracture toughness value P max = Applied load at fracture P Q = Conditional load value at fracture determined by ASTM Standard W = Compact tension specimen width σ ys = Material yield strength under tension load I N T R O D U C T I O NTitanium alloy Ti-6Al-4V (Ti64) has been used in the aerospace and other industries owing to its high specific strength, excellent resistance to fatigue and corrosion, and good performance at elevated temperature. With the increasing use of carbon fibre polymer composites in the airframes, titanium will be increasingly used because of its good compatibility with this material. However, titanium alloys are extremely expensive and very difficult to machine, if compared with other aerospace alloys such as aluminium. Therefore, using the Additive Manufacture (AM) technology to build titanium parts has become very attractive owing to the significant reduction in material waste, machining and tooling cost, manufacturing energy and time to market. Conventional powder bed AM also makes it possible to easily produce complicated parts. However, the cost of material powder is usually particularly high, which affects the overall cost of the process. This drawback is counterbalanced by the reduced material waste. Studies have shown that AM can be an economically and environmentally superior option to the traditional methods of machining from cast or forged billets for production in small batches.

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Section: Resultsmentioning

confidence: 99%

“…Residual stresses in type A (a), B (b) and C (c) specimens. Residual stresses shown are in the direction of the applied load . [Colour figure can be viewed at wileyonlinelibrary.com]…”

Section: Resultsmentioning

confidence: 99%

Fracture toughness and fatigue crack growth rate properties in wire + arc additive manufactured Ti‐6Al‐4V

Zhang

Martina

Ding

et al. 2016

Fatigue Fract Eng Mat Struct

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“…The possibility of their effective application for the manufacture of panels of complex shape with stiffeners from the alloy Ti-6Al-4V (Fig. 8) has been confirmed [21,22]. In particular, the use of additive WAAM arc welding technology (Wire-Arc Additive Manufacturing) makes it possible to achieve an increased saving of an expensive titanium alloy in the manufacture of volumetric structures.…”

Section: Analysis Of Currently Used Materials and Welding Technolomentioning

confidence: 93%

Analysis of the current state of additive welding technologies for manufacturing volume metallic products (review)

Peleshenko

Korzhyk

Voitenko

et al. 2017

EEJET

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“…However, due to the properties and composition of the material at the interface formed by explosive welding are very complicated, these assumptions will be no longer applicable for metal composite plates. Therefore, experimental test is always the main method to study the effect of interface . Unfortunately, current works about fatigue cracks in mismatched material mainly focus on a single test parameter, and the effects of R , F max , and average load on fatigue crack behavior have not been studied primarily.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, experimental test is always the main method to study the effect of interface. 13 Unfortunately, current works about fatigue cracks in mismatched material mainly focus on a single test parameter, and the effects of R, F max , and average load on fatigue crack behavior have not been studied primarily. In this paper, the SENT specimen is used to investigate the fatigue cracks normal to a mismatched interface.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the fatigue crack behavior of Zr702/TA2/Q345R composite plate with a crack normal to interface

Zhou

et al. 2019

Fatigue Fract Eng Mat Struct

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In this paper, the effects of maximum load, load ratio, and average load on fatigue crack propagation of Zr702/TA2/Q345R composite plate with a crack normal to the interface are studied by experiment and finite element method. When crack propagates to the interface from the compliant material side, the crack growth rate decreases to the minimum at first. After crack penetrates through the interface, the fatigue crack growth rate accelerates continuously. When crack propagates to the interface from the stiff material side, the fatigue crack growth rate generally increases with the crack length. Regardless of the direction of crack growth, the increase of load ratio will weaken the difference of crack growth rate near the interface caused by material property mismatch. Finite element results show that elastic modulus mismatch significantly changes the variation of the stress intensity factor amplitude. All results demonstrate that crack growth rate is dependent on the competition of the stress intensity factor amplitude, the fatigue crack growth rate in the corresponding material, and the interface strength.

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Crack path selection at the interface of wrought and wire+arc additive manufactured Ti–6Al–4V

Abstract: Crack path selection at the interface of wrought and wire+arc additive manufactured Ti-6Al-4V. Materials & Design, 104 pp. 365-375. For guidance on citations see FAQs.

Cited by 57 publications

References 33 publications

Fracture toughness and fatigue crack growth rate properties in wire + arc additive manufactured Ti‐6Al‐4V

Fracture toughness and fatigue crack growth rate properties in wire + arc additive manufactured Ti‐6Al‐4V

Analysis of the current state of additive welding technologies for manufacturing volume metallic products (review)

Investigation on the fatigue crack behavior of Zr702/TA2/Q345R composite plate with a crack normal to interface

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