Eliminating microstructure and mechanical anisotropy of Ti-6.5Al-2Zr-1Mo-1 V manufactured by hot-wire arc additive manufacturing through boron addition

Lü, Tao; Cui, Yinan; Xue, Linan; Zhang, Haorui; Liu, Changmeng

doi:10.1007/s10853-021-06012-y

Cited by 13 publications

(3 citation statements)

References 51 publications

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“…All of these mechanical properties meet the requirement of the project. For thin-walled sample, all mechanical properties are significantly lower in longitudinal direction, which is typical of the WAAM process [18] . It's worth mentioning that the elongation rate of WAAM parts are much lower than forgings (usually reaching 20% or more).…”

Section: Mechanical Propertiesmentioning

confidence: 82%

Fabricating large scale titanium alloy thin-walled double-sided part by hot-wire arc additive manufacturing

Yu,

Li,

Liu

2024

J. Phys.: Conf. Ser.

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Using traditional process to fabricate large scale titanium alloy thin-walled part such as wings and grid rudder, has the problem of low material utilization. Wire arc additive manufacturing (WAAM) is a flexible manufacturing technology with high deposition efficiency and high material utilization. In addition, a hot-wire device is attached to the WAAM system as auxiliary heat source, and the WAAM system becomes hot-wire arc additive manufacturing (HWAAM) system. In this paper, a large scale titanium alloy drone frame was fabricated by HWAAM. A double-side alternating deposition method was proposed to reduce the thermal deformation of the substrate. Two additional sections of the drone frame was taken off for mechanical analysis. The shape of the whole drone frame is completed and the mechanical properties meet the requirements of the project.

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Section: Mechanical Propertiesmentioning

confidence: 82%

Fabricating large scale titanium alloy thin-walled double-sided part by hot-wire arc additive manufacturing

Yu,

Li,

Liu

2024

J. Phys.: Conf. Ser.

Self Cite

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“…However, it is inevitable that during the melting process, anisotropy will be caused in the material [ 58 , 59 , 60 ]. Lu et al [ 61 ] took Ti–6.5Al2Zr–1Mo–1V as a research object, adding 0.1 wt% of boron. The coarse columnar b grains and the continuous grain-boundary a phase were effectively refined, thereby reducing the mechanical anisotropy.…”

Section: Metallic Biomaterials For Ammentioning

confidence: 99%

A Critical Review of Additive Manufacturing Techniques and Associated Biomaterials Used in Bone Tissue Engineering

Lyu

Zhao

et al. 2022

Polymers

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With the ability to fabricate complex structures while meeting individual needs, additive manufacturing (AM) offers unprecedented opportunities for bone tissue engineering in the biomedical field. However, traditional metal implants have many adverse effects due to their poor integration with host tissues, and therefore new material implants with porous structures are gradually being developed that are suitable for clinical medical applications. From the perspectives of additive manufacturing technology and materials, this article discusses a suitable manufacturing process for ideal materials for biological bone tissue engineering. It begins with a review of the methods and applicable materials in existing additive manufacturing technologies and their applications in biomedicine, introducing the advantages and disadvantages of various AM technologies. The properties of materials including metals and polymers, commonly used AM technologies, recent developments, and their applications in bone tissue engineering are discussed in detail and summarized. In addition, the main challenges for different metallic and polymer materials, such as biodegradability, anisotropy, growth factors to promote the osteogenic capacity, and enhancement of mechanical properties are also introduced. Finally, the development prospects for AM technologies and biomaterials in bone tissue engineering are considered.

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“…Pre-heating the feedstock reduces the arc heat required for melting; therefore, the amount of current necessitated can be reduced. Consequently, the amount of heat transferred to the deposited layer will be reduced (Li et al , 2018; Fu et al , 2021; Lu et al , 2021). The setup for hot wire WAAM (HW-WAAM) is shown in Figure 4(a).…”

Section: Controlled Droplet Transitionmentioning

confidence: 99%

Forming accuracy improvement in wire arc additive manufacturing (WAAM): a review

Dong

Miao

et al. 2022

RPJ

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Purpose This paper aims to anticipate the possible development direction of WAAM. For large-scale and complex components, the material loss and cycle time of wire arc additive manufacturing (WAAM) are lower than those of conventional manufacturing. However, the high-precision WAAM currently requires longer cycle times for correcting dimensional errors. Therefore, new technologies need to be developed to achieve high-precision and high-efficiency WAAM. Design/methodology/approach This paper analyses the innovations in high-precision WAAM in the past five years from a mechanistic point of view. Findings Controlling heat to improve precision is an effective method. Methods of heat control include reducing the amount of heat entering the deposited interlayer or transferring the accumulated heat out of the interlayer in time. Based on this, an effective and highly precise WAAM is achievable in combination with multi-scale sensors and a complete expert system. Originality/value Therefore, a development direction for intelligent WAAM is proposed. Using the optimised process parameters based on machine learning, adjusting the parameters according to the sensors’ in-process feedback, achieving heat control and high precision manufacturing.

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Eliminating microstructure and mechanical anisotropy of Ti-6.5Al-2Zr-1Mo-1 V manufactured by hot-wire arc additive manufacturing through boron addition

Cited by 13 publications

References 51 publications

Fabricating large scale titanium alloy thin-walled double-sided part by hot-wire arc additive manufacturing

Fabricating large scale titanium alloy thin-walled double-sided part by hot-wire arc additive manufacturing

A Critical Review of Additive Manufacturing Techniques and Associated Biomaterials Used in Bone Tissue Engineering

Forming accuracy improvement in wire arc additive manufacturing (WAAM): a review

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