Characterization of laser powder deposited Ti–TiC composites and functional gradient materials

Zhang, Yongzhong; Wei, Zengmin; Li-kai, Shi; Xi, Mingzhe

doi:10.1016/j.jmatprotec.2007.12.055

Cited by 105 publications

(41 citation statements)

References 13 publications

(15 reference statements)

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“…The powderfeed process is capable of fabricating parts with small size and high geometrical accuracy. In addition, it is possible to produce parts with functionally graded materials (FGM) [10]. On the other hand, the wire-feed approach is a cleaner and more environmentally friendly process, which does not expose operators to the potentially hazardous powder environment.…”

Section: Introductionmentioning

confidence: 99%

A multi-bead overlapping model for robotic wire and arc additive manufacturing (WAAM)

Ding

Pan

Cuiuri

et al. 2015

Robotics and Computer-Integrated Manufacturing

385

132

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Wire and arc additive manufacturing (WAAM) is a promising alternative to traditional subtractive manufacturing for fabricating large aerospace components that feature high buy-to-fly ratio. Since the WAAM process builds up a part with complex geometry through the deposition of weld beads on a layer-by-layer basis, it is important to model the geometry of a single weld bead as well as the multi-bead overlapping process in order to achieve high surface quality and dimensional accuracy of the fabricated parts. This study firstly builds models for a single weld bead through various curve fitting methods. The experimental results show that both parabola and cosine functions accurately represent the bead profile. The overlapping principle is then detailed to model the geometry of multiple beads overlapping together. The tangent overlapping model (TOM) is established and the concept of the critical centre distance for stable multi-bead overlapping processes is presented. The proposed TOM is shown to provide a much better approximation to the experimental measurements when compared with the traditional flat-top overlapping model (FOM). This is critical in process planning to achieve better geometry accuracy and material efficiency in additive manufacturing. Abstract: Wire and arc additive manufacturing (WAAM) is a promising alternative to traditional subtractive manufacturing for fabricating large aerospace components that feature high buy-to-fly ratio. Since the WAAM process builds up a part with complex geometry through the deposition of weld beads on a layer-by-layer basis, it is important to model the geometry of a single weld bead as well as the multi-bead overlapping process in order to achieve high surface quality and dimensional accuracy of the fabricated parts. This study firstly builds models for a single weld bead through various curve fitting methods. The experimental results show that both parabola and cosine functions accurately represent the bead profile. The overlapping principle is then detailed to model the geometry of multiple beads overlapping together. The Tangent Overlapping Model (TOM) is established and the concept of the critical centre distance for stable multi-bead overlapping processes is presented. The proposed TOM is shown to provide a much better approximation to the experimental measurements when compared with the traditional Flat-top Overlapping Model (FOM). This is critical in process planning to achieve better geometry accuracy and material efficiency in additive manufacturing.

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Section: Introductionmentioning

confidence: 99%

A multi-bead overlapping model for robotic wire and arc additive manufacturing (WAAM)

Ding

Pan

Cuiuri

et al. 2015

Robotics and Computer-Integrated Manufacturing

385

132

View full text Add to dashboard Cite

show abstract

“…Laser rapid solidification materials processing and manufacturing such as laser engineered net shaping (LENS), direct laser fabrication (DLF), laser powder deposition (LPD), laser melting deposition (LMD), etc. have been proved to be useful methods to fabricate fully dense near-net-shape metallic components [11][12][13][14][15][16][17][18][19][20][21][22]. These processes are based on layer-by-layer materials melting and deposition process to build a complete work-piece.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and tensile properties of laser melting deposited TiC/TA15 titanium matrix composites

Liu

Zhang

et al. 2009

Journal of Alloys and Compounds

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“…Details of the laser direct deposition system used in the present work were presented elsewhere [11]. The laser beam was focused using a reflective copper mirror with a focal length of 350 mm and the focusing plane was maintained at 10 mm above the substrate to generate a laser spot size on the substrate of approximately 2.5 mm in diameter.…”

Section: Methodsmentioning

confidence: 99%

Microstructure and properties of laser direct deposited CuNi17Al3Fe1.5Cr alloy

Zhang

Huang

Vilar³

2011

Int J Miner Metall Mater

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Thin walls of a copper-base alloy with the nominal composition CuNi17Al3Fe1.5Cr were successfully prepared by laser direct deposition additive manufacturing. The microstructure, as revealed by optical and scanning electron microscopy, indicated that the deposited material was fully dense and with a dendritic microstructure. The dendrites are parallel to the build-up direction, which is also the heat conduction direction during deposition. X-ray diffraction analysis results show that the deposited material is composed of a single phase and a copper-based solid solution. Some precipitate particles of metal silicides were observed in the interdendritic region by scanning electron microscopy. The ultimate tensile strength along the laser scanning direction reaches 735 MPa. The hardness is about Hv 0.1 300.

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Characterization of laser powder deposited Ti–TiC composites and functional gradient materials

Cited by 105 publications

References 13 publications

A multi-bead overlapping model for robotic wire and arc additive manufacturing (WAAM)

A multi-bead overlapping model for robotic wire and arc additive manufacturing (WAAM)

Microstructure and tensile properties of laser melting deposited TiC/TA15 titanium matrix composites

Microstructure and properties of laser direct deposited CuNi17Al3Fe1.5Cr alloy

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