scholarly journals Peculiarities of obtaining high-quality products of titanium alloys manufactured by direct laser deposition technology Особенности получения качественных изделий из титановых сплавов, изготовленных технологией прямого лазерного выращивания

2019 ◽  
Vol 13 (8) ◽  
pp. 722-733
Author(s):  
M.O. Gushchina ◽  
O.G. Klimova-Korsmik ◽  
S.A. Shalnova ◽  
A.M. Vildanov ◽  
E.A. Valdaytseva
Keyword(s):  
Processing Parameters ◽  
Laser Deposition ◽  
Powder Materials ◽  
Additive Technology ◽  
Direct Laser Deposition ◽  
Direct Laser ◽  
The Right ◽  
Complex Parts ◽  
Unique Individual ◽  
Deposition Technology

The additive technology of direct laser deposition (DLD) belongs to the class of 3D printing methods for metal parts and constructions. It is promising for the manufacture of large-sized complex parts for the aviation and shipbuilding industries. Methods of additive production dictate serious requirements for the properties of building powders, but with the right choice of system and taking into account all the processes that occur when a selected source acts on powder materials, unique individual material properties can be achieved. In this work, the influence of powder quality, protect atmosphere as well as processing parameters on the structure and properties of deposited parts manufactured Ti-6Al-4V investigated. Аддитивная технология прямого лазерного выращивания (ПЛВ) относится к классу методов 3D печати металлических изделий. Она является перспективной для изготовления крупногабаритных сложнопрофильных изделий авиационной и судостроительной промышленностей. Методы аддитивного производства диктуют серьезные требования к свойствам используемых порошков, но при правильном выборе системы и с учетом всех процессов, протекающих при воздействии выбранного источника на порошковые материалы можно добиться уникальных индивидуальных свойств материала. В данной работе представлены результаты исследований влияния качества порошков, качества атмосферы и технологических режимов процесса на структуру и свойства конечных изделий, изготовленных методом прямого лазерного выращивания из титанового сплава ВТ6. Кроме того, показана принципиальная возможность повторного использования титановых порошков для достижение более высоких экономических показателей процесса.

scholarly journals High-Speed Direct Laser Deposition: Technology, Equipment and Materials

2016 ◽  
Vol 125 ◽  
pp. 012009 ◽  
Author(s):  
G A Turichin ◽  
V V Somonov ◽  
K D Babkin ◽  
E V Zemlyakov ◽  
O G Klimova
Keyword(s):  
High Speed ◽  
Laser Deposition ◽  
Direct Laser Deposition ◽  
Direct Laser ◽  
Deposition Technology

Quality Management of Metal Products Prepared by High-Speed Direct Laser Deposition Technology

2016 ◽  
Vol 684 ◽  
pp. 461-467 ◽  
Author(s):  
Vladimir Glukhov ◽  
Gleb Turichin ◽  
Olga G. Klimova-Korsmik ◽  
Evgeniy Zemlyakov ◽  
Konstantin Babkin
Keyword(s):  
Heat Treatment ◽  
High Speed ◽  
Laser Deposition ◽  
Inconel 625 ◽  
Material Structure ◽  
Influence Of Process Parameters ◽  
Direct Laser Deposition ◽  
Direct Laser ◽  
Metal Products ◽  
Deposition Technology

In this article the technology “high-speed direct laser deposition” is performed. Influence of process parameters on product properties and material structure was defined for Ni-based alloy Inconel 625. Developed technology provided the mechanic properties of products on the bottom level of rolled metal and allows avoid heat treatment and HIP in production process. Economic efficiency of this technology is demonstrated for main areas of industry.

Influence of the Roughness on the Mechanical Properties of Ti-6Al-4V Products Prepared by Direct Laser Deposition Technology

2018 ◽  
Vol 284 ◽  
pp. 312-318 ◽  
Author(s):  
S.A. Shalnova ◽  
Olga G. Klimova-Korsmik ◽  
M.O. Gushchina
Keyword(s):  
Mechanical Properties ◽  
New Technologies ◽  
Laser Action ◽  
High Strength ◽  
Laser Deposition ◽  
Direct Laser Deposition ◽  
Direct Laser ◽  
Compressed Gas ◽  
Engine Systems ◽  
Deposition Technology

This article presents the technology of direct laser deposition. This technology is one of the most perspective new technologies. It allows realizing heterophase process during the manufacturing, in which the process of partial melting of the used powder is realized. The product is formed from a metal powder, which is supplied by a compressed gas-powder jet directly into the laser action zone. Ti-based alloys are interesting for many industrial areas, for example, engine systems, aircraft and shipbuilding, because of their corrosion resistance, low density and high strength. The influence of roughness on the mechanical properties of Ti-based products prepared by direct laser deposition was studied. It was found that the surface roughness distorts the values of the mechanical characteristics.

Structure Formation in Ni Superalloys during High-Speed Direct Laser Deposition

2016 ◽  
Vol 879 ◽  
pp. 978-983 ◽  
Author(s):  
Olga G. Klimova-Korsmik ◽  
Gleb Turichin ◽  
Evgeniy Zemlyakov ◽  
Konstantin Babkin ◽  
Pavel Petrovsky ◽  
...  
Keyword(s):  
High Speed ◽  
New Technologies ◽  
Laser Action ◽  
Mechanical Tests ◽  
Laser Deposition ◽  
Powder Materials ◽  
High Productivity ◽  
Direct Laser Deposition ◽  
Heating And Cooling ◽  
Direct Laser

Additive technologies are replacing the conventional methods of casting and subsequent time-consuming machining because of its high productivity. Resent engineering development in the field of additive manufacturing allows increasing assortment of useful powder materials. Technology of high-speed direct laser deposition (HSDLD) is a one of most perspective new technologies. It allows realizing heterophase process during the manufacturing, which there is process of partial melting of used powder is realized. The product is formed from a metal powder, which is supplied by compressed gas-powder jet directly into the laser action zone, wherein the jet can be as coaxial and as non-coaxial. Ni-based alloys found their application in many industrial areas, mostly there are used engine systems, aircraft and shipbuilding, aeronautics. The unique combination of operational characteristics depending on the type of alloy makes them promising materials. Heating and cooling rates during direct laser deposition determine structure and affect on its properties. Research is focused on structure and phase formation within technological process of HSDLD for Ni-base superalloys. Mechanical tests were carried out on the static tensile test, microhardness was measured. Based on research results the high-speed direct laser deposition technology could be used for manufacturing of products from different Ni-based alloys without subsequent heat treatment.

A high strength low alloy steel fabricated by direct laser deposition

Vacuum ◽  
2019 ◽  
Vol 161 ◽  
pp. 225-231 ◽  
Author(s):  
Qiang Wang ◽  
Song Zhang ◽  
Chunhua Zhang ◽  
Jianqiang Wang ◽  
M. Babar Shahzad ◽  
...  
Keyword(s):  
Alloy Steel ◽  
High Strength ◽  
Laser Deposition ◽  
Low Alloy Steel ◽  
Direct Laser Deposition ◽  
Direct Laser

Self-Sufficient Modeling of Single Track Deposition of Ti–6Al–4V With the Prediction of Capture Efficiency

2018 ◽  
Vol 141 (1) ◽  
Author(s):  
Christopher Katinas ◽  
Shunyu Liu ◽  
Yung C. Shin
Keyword(s):  
Molten Pool ◽  
Deposition Process ◽  
Capture Efficiency ◽  
Laser Deposition ◽  
Single Track ◽  
Profile Error ◽  
Track Geometry ◽  
Direct Laser Deposition ◽  
Direct Laser ◽  
Traditional Manufacturing

Understanding the capture efficiency of powder during direct laser deposition (DLD) is critical when determining the overall manufacturing costs of additive manufacturing (AM) for comparison to traditional manufacturing methods. By developing a tool to predict the capture efficiency of a particular deposition process, parameter optimization can be achieved without the need to perform a costly and extensive experimental study. The focus of this work is to model the deposition process and acquire the final track geometry and temperature field of a single track deposition of Ti–6Al–4V powder on a Ti–6Al–4V substrate for a four-nozzle powder delivery system during direct laser deposition with a LENS™ system without the need for capture efficiency assumptions by using physical powder flow and laser irradiation profiles to predict capture efficiency. The model was able to predict the track height and width within 2 μm and 31 μm, respectively, or 3.3% error from experimentation. A maximum of 36 μm profile error was observed in the molten pool, and corresponds to errors of 11% and 4% in molten pool depth and width, respectively. Based on experimentation, the capture efficiency of a single track deposition of Ti–6Al–4V was found to be 12.0%, while that from simulation was calculated to be 11.7%, a 2.5% deviation.

Determining the Optimal Mode of the Inconel 718 Alloy Deposition at a Direct Laser Deposition Plant

2021 ◽  
Vol 1037 ◽  
pp. 3-12
Author(s):  
Maxim Oleynik ◽  
Alexander I. Khaimovich ◽  
Andrey V. Balaykin
Keyword(s):  
Tensile Strength ◽  
Energy Density ◽  
Target Function ◽  
Laser Deposition ◽  
Steep Ascent ◽  
Inconel 718 Alloy ◽  
Direct Laser Deposition ◽  
Direct Laser ◽  
Optimal Mode ◽  
Deposition Mode

The paper describes determining the optimal direct laser deposition mode when processing the results of a two-factor experiment by the steep ascent method. The dependence of the ultimate tensile strength on the volumetric energy density and the lateral pitch was chosen as the target function.

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