Integration of Deformation Processing with Additive Manufacture of Ti‐6A1‐4V Components for Improved β Grain Structure and Texture

Sidhu, J.; Wescott, Andrew; Prangnell, P.B.

doi:10.1002/9781119093466.ch55

Cited by 4 publications

(4 citation statements)

References 14 publications

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“…When rolling was applied, new β orientations, associated with the deformation of α laths, were created and a strong columnar texture was mitigated. In a recent study, these new β orientations were found to arise from twinning with the residual β [52]. Another key effect observed was the refinement effect induced by the interpass rolling applied to the WAAM deposits: by increasing the applied load the grains become more refined, resulting in an improvement of the material microstructure.…”

Section: Methodsmentioning

confidence: 99%

Current Status and Perspectives on Wire and Arc Additive Manufacturing (WAAM)

et al. 2019

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Additive manufacturing has revolutionized the manufacturing paradigm in recent years due to the possibility of creating complex shaped three-dimensional parts which can be difficult or impossible to obtain by conventional manufacturing processes. Among the different additive manufacturing techniques, wire and arc additive manufacturing (WAAM) is suitable to produce large metallic parts owing to the high deposition rates achieved, which are significantly larger than powder-bed techniques, for example. The interest in WAAM is steadily increasing, and consequently, significant research efforts are underway. This review paper aims to provide an overview of the most significant achievements in WAAM, highlighting process developments and variants to control the microstructure, mechanical properties, and defect generation in the as-built parts; the most relevant engineering materials used; the main deposition strategies adopted to minimize residual stresses and the effect of post-processing heat treatments to improve the mechanical properties of the parts. An important aspect that still hinders this technology is certification and nondestructive testing of the parts, and this is discussed. Finally, a general perspective of future advancements is presented.

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Section: Methodsmentioning

confidence: 99%

Current Status and Perspectives on Wire and Arc Additive Manufacturing (WAAM)

et al. 2019

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Section: Current Methods For Quality Improvement In the Waam Procementioning

confidence: 99%

“…Zhi et al studied the influence of ultrasonic shock on the mechanical properties of arc-added titanium alloy parts. As shown in Figure 18, ultrasonic shock can reduce the anisotropy of mechanical properties of parts, and the percentage of anisotropy in tensile strength of parts was 12.5%, reduced by 1.5% [79]. Donoghue et al studied the effect of ultrasonic shock on the microstructure of arcadded TC4 titanium alloy, and found that ultrasonic shock can break coarse columnar crystals and form fine equiaxed crystal structures.…”

Section: Peening and Ultrasonic Impact Treatmentmentioning

confidence: 99%

Research Progress of Arc Additive Manufacture Technology

et al. 2021

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Additive manufacturing technology is a special processing technology that has developed rapidly in the past 30 years. The materials used are divided into powder and wire. Additive manufacturing technology using wire as the material has the advantages of high deposition rate, uniform composition, and high density. It has received increasingly more attention, especially for the high efficiency and rapid prototyping of large-size and complex-shaped components. Wire arc additive manufacturing has its unique advantages. The concept, connotation, and development history of arc additive manufacturing technology in foreign countries are reviewed, and the current research status of arc-based metal additive manufacturing technology is reviewed from the principles, development history, process, and practical application of arc additive manufacturing technology. It focuses on the forming system, forming material, residual stress and pores, and other defect controls of the technology, as well as the current methods of mechanical properties and process quality improvement, and the development prospects of arc additive manufacturing technology are prospected. The results show that the related research work of wire arc additive manufacturing technology is still mainly focused on the experimental research stage and has yet not gone deep into the exploration of the forming mechanism. The research work in this field should be more in-depth and systematic from the physical process of forming the molten pool system from the perspectives of stability, the organization evolution law, and performance optimization. We strive to carry out wire arc additive forming technology and theoretical research to promote the application of this technology in modern manufacturing.

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“…The optimization of having an accurately fitting part can have profound impacts on specific fit-for-purpose operations. One example can be shown in Donoghue [47] and his investigation of hybrid additive manufacturing techniques for aerospace-based components. In his example, he elaborates on the use of bearings for aerospace-based applications.…”

Section: The Importance Of Tribological Property Alterations In Addit...mentioning

confidence: 99%

Tribological Properties of Additive Manufactured Materials for Energy Applications: A Review

2020

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Recently, additive manufacturing (AM) has gained much traction due to its processing advantages over traditional manufacturing methods. However, there are limited studies which focus on process optimization for surface quality of AM materials, which can dictate mechanical, thermal, and tribological performance. For example, in heat-transfer applications, increased surface quality is advantageous for reducing wear rates of vibrating tubes as well as increasing the heat-transfer rates of contacting systems. Although many post-processing and in situ manufacturing techniques are used in conjunction with AM techniques to improve surface quality, these processes are costly and time-consuming compared to optimized processing techniques. With improved as-built surface quality, particles tend to be better fused, which allows for greater wear resistance from contacting tube surfaces. Additionally, improved surface quality can reduce the entropy and exergy generated from flowing fluids, in turn increasing the thermodynamic efficiency of heat-transferring devices. This review aims to summarize the process-optimizing methods used in AM for metal-based heat exchangers and the importance of as-built surface quality to its performance and long-term energy conservation. The future directions and current challenges of this field will also be covered, with suggestions on how research in this topic can be improved.

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Integration of Deformation Processing with Additive Manufacture of Ti‐6A1‐4V Components for Improved β Grain Structure and Texture

Cited by 4 publications

References 14 publications

Current Status and Perspectives on Wire and Arc Additive Manufacturing (WAAM)

Current Status and Perspectives on Wire and Arc Additive Manufacturing (WAAM)

Research Progress of Arc Additive Manufacture Technology

Tribological Properties of Additive Manufactured Materials for Energy Applications: A Review

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