Simulation Analysis of Stellite 6® Particle Impact on Steel Substrate in Supersonic Laser Deposition Process

Luo, Fang; Cockburn, Andrew; Cai, Dingbao; Sparks, Martin; Lu, Yunhu; Ding, Cairong; Langford, R. M.; O’Neill, W; Yao, Jianhua; Liu, Rong

doi:10.1007/s11666-014-0176-0

Cited by 23 publications

(17 citation statements)

References 26 publications

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“…This reduction in capital and operating costs means that SLD may be viable in many applications, for which CS has proved too costly allowing the fully solid process route found in CS to find a use in a wider range of applications. A variety of material coatings such as Cu, Ti, Stellite 6, Ni60, Al-Cu and Al-Si alloys, have been successfully prepared with SLD technique [4][5][6][7][8][9][10][11][12][13][14][15][16].…”

Section: Abstract : Supersonic Laser Deposition Materials Prmentioning

confidence: 99%

Research progress of supersonic laser deposition technology

Yao¹,

Kovalenko²

2016

The Paton Welding J.

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Supersonic laser deposition is a new coating and fabrication process, in which a supersonic powder stream generated in cold spray impinges onto a substrate which is simultaneously irradiated with a laser. It will be increasingly employed for depositing coatings and metal additive manufacturing because of its unique advantages: solid-state deposition of dense, homogeneous and pore-free coatings onto a range of substrate, high build rate at reduced operating costs without the use of expensive gas heating and large volumes of helium, and opening up a new opportunity for efficiently depositing high hardness metallic powders which are usually difficult to be deposited solely by cold spray. Based on the current research results in our group, this paper systematically reviews state-of-the-art of supersonic laser deposition technique at home and abroad, from the viewpoints of materials selection, process optimization, properties characterization, equipment design and so on. The existing issues in these aspects are deeply analyzed, and the corresponding solutions are tentatively proposed. Meanwhile, the potential industrial applications of supersonic laser deposition in various fields are elaborated in detail, as well as the future perspectives and challenges facing this technology, in order to provide insight for further investigations and innovation in supersonic laser deposition as an emerging combination additive re-manufacturing technology with high efficiency, low cost and high quality. 16 Ref., 18 Figures. K e y w o r d s : supersonic laser deposition, materials, process parameters, performances, applicationsSupersonic laser deposition (SLD) is a newly developed technology in the field of laser material processing, which can be used for surface modification and coating of engineering components for increased functionality [1][2][3]. This technology combines the supersonic powder beam found in cold spray (CS) with laser heating of the deposition site. In SLD, a laser heats both the spraying particles and the substrate to 30-80 % of their melting point, thus significantly reducing the strength of the particles and substrate, and allowing the particles to plastically deform and build up a coating at an impact velocity about half of that in CS.SLD technology has been increasingly employed for coating deposition because of its technological and economic advantages over conventional coating methods, namely solid-state deposition of dense, homogeneous and pore-free coatings onto a range of substrates; high deposition rate at reduced operating costs without the use of expensive heating and process inert gases; less sensitivity to feedstock materials characteristics; consolidation of difficultto-deposit powders; and significant improvements in the properties of coating materials. More importantly, lower processing temperatures and shorter processing time of SLD technique will enable the coating, and fabrication of near-net shape components with little or no melting, thus avoiding the deleterious effects of high-temperatur...

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Section: Abstract : Supersonic Laser Deposition Materials Prmentioning

confidence: 99%

Research progress of supersonic laser deposition technology

Yao¹,

Kovalenko²

2016

The Paton Welding J.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Микронапряжения приводят к интенсивно-му образованию и росту трещин [5,6], механизм зарождения которых связывают с дислокациями [11]. Изучение влияния формы электрода и погон-ной энергии на плотность дислокаций проводили по уширению рентгеновских линий [12]: 19 в результате установлено, что максимальная плотность дислокаций характерна для наплав-ки перпендикулярной лентой и уменьшается при наплавке продольной лентой (рис.…”

Section: выводыunclassified

“…[1][2][3][4][5][6][7][8][9][10][11] является степень совершен-ства структуры. Качество монокристаллической структуры определяется следующими кристал-лографическими и структурными показателями: кристаллографической ориентацией и степенью разориентации элементов структуры, параметра-ми структурных составляющих, отсутствием зе-рен с отличающейся кристаллографической ори-ентацией от исходного металла.…”

Section: к л ю ч е в ы е с л о в а : монокристалл жаропрочный никелеunclassified

“…для ее решения исходили из известного положения теории кристаллизации, а именно, что качество ростовых монокристал-лов определяется главным образом кристаллогра-фией исходной заготовки (затравки) и темпера-турно-скоростными условиями кристаллизации. Известно [8][9][10][11], что оптимальные параметры структуры в ростовых монокристаллах литейных жнс достигаются при выполнении температур-но-скоростных и ориентационных условий на-правленной кристаллизации, главные из которых оцениваются величиной и направлением макси-мального температурного градиента G по фронту кристаллизации, скоростью кристаллизации R, их соотношением G/ R и кристаллографической ори-ентацией «стартовой» затравки.…”

Section: к л ю ч е в ы е с л о в а : монокристалл жаропрочный никелеunclassified

“…но если при выращивании монокристаллов закономерно-сти влияния технологических параметров на ве-личину изменения указанных выше температур-но-скоростных условий формирования хорошо изучены [8][9][10][11], то такие данные при сварке в ли-Рис. 2.…”

Section: к л ю ч е в ы е с л о в а : монокристалл жаропрочный никелеunclassified

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