Effects of Ultrasonic Vibration on Microstructure, Mechanical Properties, and Fracture Mode of Inconel 625 Parts Fabricated by Cold Metal Transfer Arc Additive Manufacturing

Ma, Qunshuang; Haozhe, Chen; Ren, Nannan; Zhang, Yuanye; Hu, Lei; Wei, Meng; Yin, Xiaohui

doi:10.1007/s11665-021-06023-5

“…The existing research shows that the special energy field assisted forming technology has great potential in improving the manufacturing problems of high-strength refractory materials. In recent years, external energy fields such as electromagnetic field and ultrasonic field have been continuously applied to additive manufacturing in order to change the solidification process in the additive manufacturing process and improve the structure and properties [6][7][8]. Ultrasonic vibration assisted forming has many advantages, such as reducing material flow stress, improving contact conditions, improving the surface quality of parts, and improving the uniformity of tissues.…”

Section: Introductionmentioning

confidence: 99%

Molecular dynamics simulation of ultrasound-assisted 3D printing of aluminum matrix composites

Zhang,

Shang

2024

Fourth International Conference on Applied Mathematics, Modelling, and Intelligent Computing (CAMMIC 2024)

0

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Additive manufacturing technology, with its characteristics of no mold and short production cycle, provides a new scheme for the machining and manufacturing of high performance and difficult material parts. However, the forming process of additive manufacturing is non-equilibrium solidification, which is easy to form uneven microstructure and reduce the mechanical properties of the parts. Special energy field assisted forming technology has great potential in improving the manufacturing problems of high-strength difficult-to-process materials. In recent years, it has been continuously applied to additive manufacturing to improve the microstructure and properties of parts. Ultrasonic assistant is an important method to reduce the residual stress in the additive manufacturing process, and its scientific principle is still a frontier scientific issue. Therefore, this paper uses molecular dynamics (MD) method to study the influence of ultrasonic assistance on residual stress in additive manufacturing process. In this paper, the process of ultrasound-assisted 3D printing of graphene reinforced aluminum (Al) matrix composites was simulated by MD method. The effects of ultrasonic aid on grain size, orientation and dislocation in the composites were analyzed, and the mechanism of ultrasonic aid reduction of residual stress was revealed, which provided theoretical guidance for ultrasonic aid additive manufacturing process.

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“…However, limited by the heat source and deposition characteristics, the solidification microstructure of the deposition is dominated by coarse columnar dendrite with significant directional growth due to the temperature gradient [5], leading to significant anisotropy [6], residual stress, and even deformation or crack. For this reason, researchers have proposed to improve the problem by various strengthening means, mainly including laser shock peening (LSP) [7], rolling [8], machine hammer peening (MHP) [9], ultrasonic vibration (UV) [10], and ultrasonic impact treatment (UIT) [11]. Compared with other means of interlayer strengthening, ultrasonic impact treatment shows some unique advantages: low cost, satisfying quality guarantee, flexible operation, and environmentally friendly process.…”

Section: Introductionmentioning

confidence: 99%

A Progress in the Effect and Mechanism of Ultrasonic Impact Treatment on Additive Manufactured Metal Fabrications

Li-hua¹,

Huang²,

Wu³

et al. 2023

Preprint

0

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Metal fabrications experience complex physical metallurgical processes during additive manufacturing, leading to residual stress and coarse microstructure with directional growth. It significantly affects the comprehensive performance of the fabrications, which limits the application of additive manufacturing. Ultrasonic impact treatment (UIT), as a strengthening means to assist additive manufacturing, can effectively improve the stress state and refine the microstructure and the comprehensive performance. This paper introduces the effect of UIT on AM metal fabrications on microstructure morphology, stress distribution, surface roughness, internal defects, and comprehensive performance to gain a deeper understanding of the role of UIT on additively manufactured metal fabrications, which is based on the working principle and effect of process parameters. In addition, the strengthening mechanism of UIT in additive manufacturing is described from the perspective of surface plastic deformation and substructure formation, providing support for the shape and property control of metal fabrications in the process of additive manufacturing assisted by UIT. Finally, the issues that need to be studied in depth on UIT in additive manufacturing are summarized, and an outlook on future research directions is taken.

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“…However, limited by the heat source and deposition characteristics, the solidification microstructure of the additive manufactured metal deposition is dominated by coarse columnar dendrite with significant directional growth due to the temperature gradient [5], leading to many critical problems [6], such as significant anisotropy, residual stress, and even deformation or crack. For this reason, researchers have proposed to improve the problem by various strengthening means, mainly including laser shock peening (LSP) [7], rolling [8], machine hammer peening (MHP) [9], ultrasonic vibration (UV) [10], and ultrasonic impact treatment (UIT) [11]. Compared with other means of interlayer strengthening, ultrasonic impact treatment shows some unique advantages: low cost, satisfying quality guarantee, flexible operation, and environmentally friendly process.…”

Section: Introductionmentioning

confidence: 99%

Progress on the Effect and Mechanism of Ultrasonic Impact Treatment on Additive Manufactured Metal Fabrications

Li-hua

¹

,

Huang

²

,

Wu

³

et al. 2023

Crystals

4

0

View full text Add to dashboard Cite

Metal fabrications experience complex physical metallurgical processes during additive manufacturing, leading to residual stress and coarse microstructure with directional growth. It significantly affects the comprehensive performance of the fabrications, which limits the application of additive manufacturing. Ultrasonic impact treatment (UIT), as a strengthening means to assist additive manufacturing, can effectively improve the stress state and refine the microstructure and the comprehensive performance. This paper introduces the effect of UIT on AM metal fabrications on microstructure morphology, stress distribution, surface roughness, internal defects, and comprehensive performance to gain a deeper understanding of the role of UIT on additively manufactured metal fabrications, which is based on the working principle and effect of process parameters. In addition, the strengthening mechanism of UIT in additive manufacturing is described from the perspective of surface plastic deformation and substructure formation, providing support for the shape and property control of metal fabrications in the process of additive manufacturing assisted by UIT. Finally, the issues that need to be studied in depth on UIT in additive manufacturing are summarized, and an outlook on future research directions is taken.

show abstract

Effects of Ultrasonic Vibration on Microstructure, Mechanical Properties, and Fracture Mode of Inconel 625 Parts Fabricated by Cold Metal Transfer Arc Additive Manufacturing

Cited by 20 publications

References 32 publications

Molecular dynamics simulation of ultrasound-assisted 3D printing of aluminum matrix composites

Molecular dynamics simulation of ultrasound-assisted 3D printing of aluminum matrix composites

A Progress in the Effect and Mechanism of Ultrasonic Impact Treatment on Additive Manufactured Metal Fabrications

Progress on the Effect and Mechanism of Ultrasonic Impact Treatment on Additive Manufactured Metal Fabrications

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