Wire and arc additive manufactured Ti–6Al–4V/Al–6.25Cu dissimilar alloys by CMT-welding: effect of deposition order on reaction layer

Tian, Yinbao; Shen, Junqi; Hu, Shengsun; Jian, Gou; Kannatey‐Asibu, Elijah

doi:10.1080/13621718.2019.1629379

Cited by 23 publications

(8 citation statements)

References 31 publications

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“…TA1 to IN625 (Lu et al , 2021) functionally graded thin-walled structure was developed using a dual wire WAAM process and NiTi 2 , NiTi, TiNi 3 and Laves phases were reported in the structure with increased hardness due to the presence of Cr and Mo enriched phases. Tian et al (2019) deposited Ti-6Al-4V to AlSi 5 FGS through the WAAM process and found that the interface layers consist of continuous layers of intermetallics, Ti 7 Al 5 Si 12 and because of this, the failure occurred at the interface layer. The average tensile strength of the component was approximately 80 MPa.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Cu-Ti dissimilar interface characteristics for wire arc additive manufacturing process

Mishra

Paul

Mukherjee

et al. 2022

RPJ

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Purpose The purpose of this research is to show the characteristics of a Cu–Ti dissimilar interface produced by a wire arc-based additive manufacturing process. The purpose of this research was to determine the viability of the Cu–Ti interface for the fabrication of functionally graded structures (FGS) using the wire arc additive manufacturing (WAAM) process. Design/methodology/approach This paper used the WAAM process with variable current vis-à-vis heat input to demonstrate multiple Ti-6Al-4V (Ti64) and C11000 dissimilar fabrications. The hardness and microstructure of the dissimilar interfaces were investigated thoroughly. The formation of Cu–Ti intermetallic at the Ti64/Cu fusion interface is been revealed by scanning electron microscopy and energy dispersive X-ray analysis, while X-ray diffraction was used to identify various Cu–Ti intermetallic phases. The effect of microstructure on interfacial sensitivity and hardness are also investigated. Findings The formation of CuTi intermetallic and the β-phase transformation in Ti-6Al-4V are found to be heat input dependent. The Cu diffusion length increases as the heat input for Ti64 deposition increases, resulting in a greater Cu–Ti intermetallic thickness. The Cu–Ti interface properties improve when the heat input is less than approximately 250 J/mm or the deposition current is less than 90 A. The microhardness ranges from 55 to 650 HV from the Cu-side to the interface and from 650 to 350 HV from the interface to the Ti-side. Higher current increases interface hardness, which increases brittleness and makes the interface more prone to interfacial cracking. Originality/value Nonlinear components are needed for a variety of extreme engineering applications, which can be met by FGS with varying microstructure, composition and properties. FGS produced using the WAAM process is a novel concept that requires further investigation. Despite numerous studies on Ti-clad Cu, information on Cu–Ti interface characteristics is lacking. Furthermore, the suitability of the WAAM process for the development of Cu–Ti FGS is unknown. As a result, the goal of this research article is to fill these gaps by providing preliminary information on the feasibility of developing Cu–Ti FGS via the WAAM process.

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Section: Introductionmentioning

confidence: 99%

Evaluation of Cu-Ti dissimilar interface characteristics for wire arc additive manufacturing process

Mishra

Paul

Mukherjee

et al. 2022

RPJ

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“…A wire and arc additive manufacturing (WAAM) technology was chosen in welding-brazing of Ti-6Al-4V/Al-6.25Cu dissimilar joint. However, the joint properties were still not satisfying [14]. All the referenced studies above were focused on Ti/Al lap joining; the Ti/Al butt MIG joining has been rarely studied but by the authors.…”

Section: Introductionmentioning

confidence: 99%

Interfacial microstructure and fractography of Ti6Al4V/5A05Al dissimilar joint using the cold arc MIG welding

Wei¹,

Rao²

2021

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Titanium Ti6Al4V and aluminum 5A05Al were cold arc MIG welded using Al-Si5 filler. The feasibility of Ti/Al dissimilar cold arc MIG welding-brazing was investigated by microstructure examination and fractography. Welds without defects were fabricated; however, the Ti/Al interface exhibited non-uniform structures. A multilayered structure, including an α-Ti layer, a TiAl3 + Ti5Si3 mixed layer, and a serrate TiAl3 layer, was observed in the upper regions. In comparison, only a thin cellular TiAl3 layer was observed in other regions. Two types of fracture modes, including a ductile fracture mode and a mixed brittle-ductile fracture mode, were observed in a single joint. The ultimate tensile strength of the Ti/Al joints surpassed 240 MPa.

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“…A few attempts were carried *Corresponding author: tel. : +86 351 3557519; e-mail address: wszweishouzheng@126.com out using MIG welding, and some progress was made [8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Interfacial microstructure and fractography of Ti6Al4V/5A05Al dissimilar joint using the cold arc MIG welding

Wei¹,

Rao²

2021

View full text Add to dashboard Cite

show abstract

Wire and arc additive manufactured Ti–6Al–4V/Al–6.25Cu dissimilar alloys by CMT-welding: effect of deposition order on reaction layer

Cited by 23 publications

References 31 publications

Evaluation of Cu-Ti dissimilar interface characteristics for wire arc additive manufacturing process

Evaluation of Cu-Ti dissimilar interface characteristics for wire arc additive manufacturing process

Interfacial microstructure and fractography of Ti6Al4V/5A05Al dissimilar joint using the cold arc MIG welding

Interfacial microstructure and fractography of Ti6Al4V/5A05Al dissimilar joint using the cold arc MIG welding

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