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Загальна кількість знайдених документів : 21
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Peleshenko S. Analysis of the current state of additive welding technologies for manufacturing volume metallic products (review) [Електронний ресурс] / S. Peleshenko, V. Korzhyk, O. Voitenko, V. Khaskin, V. Tkachuk // Восточно-Европейский журнал передовых технологий. - 2017. - № 3(1). - С. 42-52. - Режим доступу: http://nbuv.gov.ua/UJRN/Vejpte_2017_3(1)__8
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Korzhyk V. Forecasting the results of hybrid laser-plasma cutting of carbon steel [Електронний ресурс] / V. Korzhyk, V. Khaskin, A. Perepychay, E. Illiashenko, S. Peleshenko // Восточно-Европейский журнал передовых технологий. - 2020. - № 2(1). - С. 6-15. - Режим доступу: http://nbuv.gov.ua/UJRN/Vejpte_2020_2(1)__2 Обгрунтовано перспективність гібридного лазерно-плазмового різання (ЛПР) металів; запропоновано конструкцію інтегрованого плазмотрона для гібридної різання та спрогнозовано результати ЛПР листових вуглецевих конструкційних сталей із використанням такого інтегрованого плазмотрона. Показано, що для мінімізації втрат лазерного випромінювання та отримання максимального проплавлення інтегрований плазмотрон доцільно компонувати за коаксіальною схемою з осьовим розташуванням лазерноного випромінювання та мінімальним нахилом неплавких електродів (одного або більше), відстань від робочого кінця яких до осі лазерного пучка повинна знаходитися в інтервалі 2 - 3 мм. Діаметр плазмоутворювального сопла повинен бути в межах 2 - 5 мм, а заглиблення фокуса під поверхню листа, що розрізається, у разі гібридного різання становити 1 - 2 мм. Для моделювання процесів лазерного, плазмового та гібридного різання застосовано програмний комплекс SYSWELD, що стало можливим завдяки врахуванню характерного для різання ефекту видалення ділянок розплавленого матеріалу в зоні різання, яке виконано шляхом заміни в ході їх розрахунку максимальної температури перегріву на початкову (20 <^>oC). Встановлено основні параметри режимів ЛПР, що надають можливість отримати мінімальний розмір ЗТВ за якості різу, яка наближається до лазерної. У цьому випадку для гібридного різання потрібно енерговкладення приблизно вдвічі менше, ніж для повітряно-плазмового. Підвищення швидкості гібридного різання за рахунок збільшення тиску і витрати робочих газів надає можливість його енерговкладанню зрівнятися з аналогічним показником газолазерного різання за більш ніж трикратного підвищення продуктивності процесу.
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Korzhyk V. Comparing features in metallurgical interaction when applying different techniques of arc and plasma surfacing of steel wire on titanium [Електронний ресурс] / V. Korzhyk, V. Khaskin, A. Grynyuk, O. Ganushchak, S. Peleshenko, O. Konoreva, O. Demianov, V. Shcheretskiy, N. Fialko // Eastern-european journal of enterprise technologies. - 2021. - № 4(12). - С. 6-17. - Режим доступу: http://nbuv.gov.ua/UJRN/Vejpte_2021_4(12)__3 This paper reports a study into the regularities of interphase interaction, features in the formation of intermetallic phases (IMPs), and defects when surfacing steel on titanium in four ways: P-MAG, CMT, plasma surfacing by an indirect arc with conductive wire, and PAW. A general tendency has been established in the IMP occurrence when surfacing steel on titanium by all the considered methods. It was determined that the plasma surfacing technique involving an indirect arc with conductive wire is less critical as regards the IMP formation. That makes it possible to obtain an intermetallic layer of the minimum thickness (25 - 54 <$Emu>m) in combination with the best quality in the formation of surfaced metal beads. Further minimization of the size of this layer is complicated by a critical decrease in the heat input into the metal, which gives rise to the capability of the surfaced metal to be collected in separate droplets. The formation of TiFe2, TiFe, and the <$Ealpha>-Fe phase enriched with titanium in different percentage compositions has been observed in the transition zone of steel surfacing on titanium under different techniques and modes of surfacing. The study has shown the possibility of formation, in addition to the phases of TiFe2 and TiFe, the Ti2Fe phase at low heat input. The technique of plasma surfacing by an indirect arc with conductive wire minimizes the thermal effect on the base metal. When it is used at the border of the transition of the layer of steel surfaced on titanium, the phase composition and structure of the layers in some cases approach the composition and structure of the transition zone of the original bimetallic sheet "titanium-steel" manufactured by rolling. A layer up to 5 <$Emu>m thick is formed from the <$Ebeta> phase with an iron concentration of 44,65 % by weight and an intermetallic layer up to 0,2 - 0,4 <$Emu>m thick, close in composition to the TiFe phase. The next step in minimizing the IMP formation might involve the introduction of a barrier layer between titanium and steel.This paper considers a possibility to obtain high-quality butt junctions of bimetallic sheets from steel clad with a layer of titanium, with the use of barrier layers. The task that was tackled related to preventing the formation of Ti - Fe intermetallic phases (IMPs) between the steel and titanium layer. The barrier layers (height ~ 0,5 mm) of vanadium and copper alloys were surfaced by arc techniques while minimizing the level of thermal influence on the base metal. To this end, plasma surfacing with a current-driving wire and pulsed MAG surfacing were used. The obtained samples were examined by methods of metallography, X-ray spectral microanalysis, durometric analysis. It has been established that when a layer of vanadium is plated on the surface of titanium, a defect-free structure of variable composition (53,87 - 65,67) wt % Ti with (33,93 - 45,54) wt % V is formed without IMPs. The subsequent surfacing of steel on a layer of vanadium leads to the formation of eutectics (hardness up to 5,523 MPa) in the fusion zone, as well as to the evolution of cracks. To prevent the formation of IMPs, a layer of bronze CuBe2 was deposited on the surface of vanadium. The formed layer contributed to the formation of a grid of hot cracks. In the titanium-vanadium-copper transition zones (0,1 - 0,2 mm wide), a fragile phase was observed. To eliminate this drawback, the bronze CuBe2 was replaced with bronze CuSi3Mn1; a defect-free junction was obtained. When using a barrier layer with CuSi3Mn1, a defect-free junction was obtained (10 - 30 % Ti; 18 - 50 % Fe; 5 - 25 % Cu). The study reported here makes it possible to recommend CuSi3Mn1 as a barrier layer for welding bimetallic sheets "steel-titanium". One of the applications of the research results could be welding of longitudinally welded pipes of main oil and gas pipelines formed from bimetallic sheets of steel clad with titanium.
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Korzhyk V. Comparing features in metallurgical interaction when applying different techniques of arc and plasma surfacing of steel wire on titanium [Електронний ресурс] / V. Korzhyk, V. Khaskin, A. Grynyuk, O. Ganushchak, V. Shcheretskiy, S. Peleshenko, O. Konoreva, O. Demianov, N. Fialko, V. Kvasnytskyi // Eastern-european journal of enterprise technologies. - 2021. - № 5(12). - С. 69-82. - Режим доступу: http://nbuv.gov.ua/UJRN/Vejpte_2021_5(12)__9 This paper reports a study into the regularities of interphase interaction, features in the formation of intermetallic phases (IMPs), and defects when surfacing steel on titanium in four ways: P-MAG, CMT, plasma surfacing by an indirect arc with conductive wire, and PAW. A general tendency has been established in the IMP occurrence when surfacing steel on titanium by all the considered methods. It was determined that the plasma surfacing technique involving an indirect arc with conductive wire is less critical as regards the IMP formation. That makes it possible to obtain an intermetallic layer of the minimum thickness (25 - 54 <$Emu>m) in combination with the best quality in the formation of surfaced metal beads. Further minimization of the size of this layer is complicated by a critical decrease in the heat input into the metal, which gives rise to the capability of the surfaced metal to be collected in separate droplets. The formation of TiFe2, TiFe, and the <$Ealpha>-Fe phase enriched with titanium in different percentage compositions has been observed in the transition zone of steel surfacing on titanium under different techniques and modes of surfacing. The study has shown the possibility of formation, in addition to the phases of TiFe2 and TiFe, the Ti2Fe phase at low heat input. The technique of plasma surfacing by an indirect arc with conductive wire minimizes the thermal effect on the base metal. When it is used at the border of the transition of the layer of steel surfaced on titanium, the phase composition and structure of the layers in some cases approach the composition and structure of the transition zone of the original bimetallic sheet "titanium-steel" manufactured by rolling. A layer up to 5 <$Emu>m thick is formed from the <$Ebeta> phase with an iron concentration of 44,65 % by weight and an intermetallic layer up to 0,2 - 0,4 <$Emu>m thick, close in composition to the TiFe phase. The next step in minimizing the IMP formation might involve the introduction of a barrier layer between titanium and steel.This paper considers a possibility to obtain high-quality butt junctions of bimetallic sheets from steel clad with a layer of titanium, with the use of barrier layers. The task that was tackled related to preventing the formation of Ti - Fe intermetallic phases (IMPs) between the steel and titanium layer. The barrier layers (height ~ 0,5 mm) of vanadium and copper alloys were surfaced by arc techniques while minimizing the level of thermal influence on the base metal. To this end, plasma surfacing with a current-driving wire and pulsed MAG surfacing were used. The obtained samples were examined by methods of metallography, X-ray spectral microanalysis, durometric analysis. It has been established that when a layer of vanadium is plated on the surface of titanium, a defect-free structure of variable composition (53,87 - 65,67) wt % Ti with (33,93 - 45,54) wt % V is formed without IMPs. The subsequent surfacing of steel on a layer of vanadium leads to the formation of eutectics (hardness up to 5,523 MPa) in the fusion zone, as well as to the evolution of cracks. To prevent the formation of IMPs, a layer of bronze CuBe2 was deposited on the surface of vanadium. The formed layer contributed to the formation of a grid of hot cracks. In the titanium-vanadium-copper transition zones (0,1 - 0,2 mm wide), a fragile phase was observed. To eliminate this drawback, the bronze CuBe2 was replaced with bronze CuSi3Mn1; a defect-free junction was obtained. When using a barrier layer with CuSi3Mn1, a defect-free junction was obtained (10 - 30 % Ti; 18 - 50 % Fe; 5 - 25 % Cu). The study reported here makes it possible to recommend CuSi3Mn1 as a barrier layer for welding bimetallic sheets "steel-titanium". One of the applications of the research results could be welding of longitudinally welded pipes of main oil and gas pipelines formed from bimetallic sheets of steel clad with titanium.
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Korzhyk V. Comparison of the features of the formation of joints of aluminum alloy 7075 (Al-Zn-Mg-Cu) by laser, microplasma, and laser-microplasma welding [Електронний ресурс] / V. Korzhyk, V. Khaskin, A. Grynyuk, S. Peleshenko, V. Kvasnytskyi, N. Fialko, O. Berdnikova, Y. Illiashenko, V. Shcheretskiy, Y. Yao // Eastern-European journal of enterprise technologies. - 2022. - № 1(12). - С. 38-47. - Режим доступу: http://nbuv.gov.ua/UJRN/Vejpte_2022_1(12)__7 This paper reports a study into features of the formation of structures of permanent butt joints of plates with a thickness of 1,5 mm made from the high-strength aluminum alloy 7075 of the Al - Zn - Mg - Cu system. Welding by melting these joints was performed using three techniques: laser, microplasma, and hybrid laser-microplasma. To implement the latter two, a compressed arc on a multipolar asymmetric current was used. The purpose of the research was to establish the tendency to the formation of characteristic defects and the possibility of their elimination. It has been determined that during laser welding a small (~ 5 %) volumetric fraction of defects in the form of pores is formed, residual welding deformations are minimized. There is a decrease in the hardness of the melted metal by 15 % with a simultaneous increase in the hardness of the heat-affected zone (HAZ) by 8 - 12 % relative to the base metal. In the melted metal, cavities up to 100 <$Emu>m in size are formed, which are the center of the origin of hot cracks with a length of 25 - 30 <$Emu>m. There are oxide inclusions in the root part of the seam. With microplasma welding, the volume fraction of defects of the melted metal in the form of pores with a size of 10 - 105 <$Emu>m increases (up to 25 %). The hardness of the melted metal is reduced by 30 % with the hardness of the HAZ metal close to the base metal. In laser-microplasma welding, the volumetric fraction of defects of the melted metal in the form of pores with a size of 15 - 25 <$Emu>m is reduced to 5 %. The hardness of the melted metal is reduced by 15 - 20 % with the hardness of the HAZ metal close to the base metal. In the lower part of the melted metal, cavities of ~ 100 <$Emu>m are formed. No microcracks were found in the seam metal. Analysis of the research results showed the advantage of the laser-microplasma technique. This method reduces the use of laser energy by 40 - 50 %, the lifetime of the welding pool (0,03 - 0,05 s) approaches laser welding, it eliminates the danger of burnout of alloying elements.
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Korzhyk V. Calculation-experimental procedure for determining welding deformations and stresses based on a digital image correlation method [Електронний ресурс] / V. Korzhyk, V. Khaskin, V. Savitsky, I. Klochkov, V. Kvasnytskyi, A. Perepichay, S. Peleshenko, A. Grinyuk, A. Aloshyn, O. Shutkevych // Eastern-European journal of enterprise technologies. - 2022. - № 5(1). - С. 44-52. - Режим доступу: http://nbuv.gov.ua/UJRN/Vejpte_2022_5(1)__7 The object of this study is determining the stressed-strained state (SSS) of a welded article by applying quantitative non-destructive testing. The relevance of the study is associated with the need to devise a universal methodology for the non-destructive quantification of SSS using the simplest approaches and means of provision. To solve this task, an estimation-experimental procedure has been developed. This procedure is based on comparing digital stereo images of the individual sections (spatial primitives) of an article before and after its welding, followed by computer processing. To validate the developed procedure, the SSS of a cylindrical article made of aluminum alloy 7005, at the end of which two flanges were welded laserly with ring seams, was determined. It was established that after performing four diametrically opposed point tacks, the residual deformations of the ends of the article can reach 0,02 - 0,05 mm, and after performing continuous ring seams - to decrease to 0,01 - 0,02 mm. The calculation showed that the residual deformations of the end of the article after welding a ring seam are at the level of 0,02 mm, and the residual stresses in the same zone - in the range of 50 - 60 MPa. The deviation in the coincidence of residual deformations is in the range of 10 - 20 %, which is a satisfactory result and can be considered as an error in the results of determining SSS in general. Based on the developed methodology for determining SSS, an experimental industrial complex has been created that allows TIG and PAW to perform welding of objects from steels and alloys with the ability to determine the resulting stressed-strained state of these objects. The procedure devised and the equipment designed can be used for to non-destructively determine SSS of spatial structures made of steels and alloys.
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Korzhyk V. Effect of the technological parameters of plasma-arc spraying of flux-cored wire on the structure and properties of intermetallide coatings based on Fe3Al [Електронний ресурс] / V. Korzhyk, O. Burlachenko, D. Strohonov, N. Fialko, M. Kharlamov, O. Grishchenko, S. Peleshenko // Eastern-European journal of enterprise technologies. - 2023. - № 1(12). - С. 6–15. - Режим доступу: http://nbuv.gov.ua/UJRN/Vejpte_2023_1(12)__3 Existing techniques for applying intermetallide layers are characterized by low productivity, difficulties associated with the maintenance and operation of technological equipment, as well as significant costs for the purchase of materials for spraying. Therefore, modern science shows considerable interest in the development of new, highly effective technologies to form intermetallide coatings on the surface of articles. Such promising techniques include the technology of plasma-arc spraying (PAS) of flux-cored wires. This technique has a number of significant advantages, namely high performance, relative simplicity, as well as the affordability of equipment and materials for coating. This paper reports a study into the structure and properties of coatings obtained by flux-cored wire PAS, in which the steel sheath and aluminum powder filler interact when heated with the exothermic effect of Fe3Al synthesis. The influence of technological parameters of PAS process on the structure and properties of Fe-Al coatings was investigated by means of mathematical planning of the experiment. It was found that in all samples the main phase is an intermetallide of the Fe3Al type. Tests for gas-abrasive wear resistance at room temperature showed that the wear resistance of coatings exceeds the stability of steel S235 by an average of 2 times. As a result of studying the electrochemical properties in a 3-% aqueous solution of NaCl and in a 0,5-% solution of H2SO4, the score of corrosion resistance for these media was determined, which was, respectively, 4 and 5 (coatings belong to the group of "resistant"). In this regard, the practical use of coatings based on the Fe3Al intermetallide is recommended for protection against oxidation, corrosion, and gas-abrasive wear of components and assemblies in the heat power industry (heat exchanger pipes, catalytic converters, steam turbine blades, shut-off valves, etc.)
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Korzhyk V. Technological processes of welding high precision thin-walled products from aluminum alloys using a laser heating source [Електронний ресурс] / V. Korzhyk, S. Peleshenko, V. Kvasnytskyi, V. Khaskin, Ye. Illyashenko, A. Aloshyn, A. Aloshyn // Міжнародний науковий журнал "Інтернаука" . - 2022. - № 12. - С. 47-53. - Режим доступу: http://nbuv.gov.ua/UJRN/mnj_2022_12_9
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Korzhyk V. Features of structure formation when surfacing steel (iron) on titanium with plasma sprayed coatings in the technology of obtaining butt joint of bimetallic plates "titanium – steel" [Електронний ресурс] / V. Korzhyk, V. Khaskin, O. Ganushchak, D. Strohonov, Y. Illiashenko, N. Fialko, C. Guo, A. Grynyuk, S. Peleshenko, A. Aloshyn // Eastern-European journal of enterprise technologies. - 2023. - № 2(12). - С. 6–16. - Режим доступу: http://nbuv.gov.ua/UJRN/Vejpte_2023_2(12)__3 The object of this study is structural formation during the surfacing of steel (iron) on titanium with plasma-sprayed coatings to obtain a butt connection of titanium-steel bimetallic plates. The task to be solved was to devise a technology for applying a barrier layer between titanium and steel to obtain a defect-free butt joint of the edges of bimetallic sheets of carbon steel, clad with a layer of titanium, under conditions of arc or plasma surfacing of carbon steel on titanium. The application of the barrier layer was carried out by plasma spraying of steel wire or iron powder. In this case, a coating with a thickness of 150 - 750 <$E mu>m was applied on Grade2 titanium, on which 1 - 2 mm thick layers of materials similar to the sprayed ones were deposited by arc and plasma deposition. It was established that during spraying with subsequent surfacing of steel wire or iron powder, the main technological factors for eliminating cracks in the resulting compound are the thickness of the sprayed coating and the amount of linear surfacing energy. The thickness of the sprayed coating was selected (at least 400 - 600 microns) followed by plasma surfacing of ER70S-6 steel wire with a diameter of 1,0 mm or CNPC-Fe200 iron powder with unit energy up to ~ 200 - 250 J/mm. A defect-free transition layer from titanium to steel was obtained. It is a continuous layer with a thickness of 50 - 60 microns, consisting of intermetalides FeTi and FeTi2, as well as a <$E beta>-phase titanium with an enhanced iron content, which retains certain ductility without cracks and other defects. With the help of the devised approach for connecting titanium-steel bimetallic edges, it is planned to manufacture seam bimetallic pipes for main pipelines to transport oil and gas raw materials extracted from wells.
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Shcheretskyi V. O. The Specific Features of Manufacturing Corrosion-Resistant Fluorophlogopite Products by Electric Arc Melting with the Use of Carbide Powder Modifiers in Conditions of SmallScale Production [Електронний ресурс] / V. O. Shcheretskyi, A. H. Maliavin, O. A. Shche-Retskiy, V. M. Korzhyk, S. I. Peleshenko, A. A. Aloshyn // Science and innovation. - 2023. - Vol. 19, № 3. - С. 82-93. - Режим доступу: http://nbuv.gov.ua/UJRN/scinsinna_2023_19_3_9
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Korzhyk V. M. Hybrid laser-plasma welding: efficiency and new posibilities (Review) [Електронний ресурс] / V. M. Korzhyk, V. Yu. Khaskin, E. V. Illyashenko, S. I. Peleshenko, A. A. Grynyuk, O. A. Babych, A. O. Alyoshin, O. M. Voitenko // The Paton welding journal. - 2024. - Iss. 1. - С. 13-21. - Режим доступу: http://nbuv.gov.ua/UJRN/pwj_2024_1_4
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Korzhyk V. M. Influence of the speed of plasma-arc welding at a variable polarity asymmetrical current on the formation of joints of high-strength aluminium alloys [Електронний ресурс] / V. M. Korzhyk, A. A. Grynyuk, V. Yu. Khaskin, E. V. Illyashenko, S. I. Peleshenko, A. O. Aloshyn, I. O. Skachkov, O. V. Dolyanivska // The Paton welding journal. - 2023. - Iss. 8. - С. 17-28. - Режим доступу: http://nbuv.gov.ua/UJRN/pwj_2023_8_5
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Korzhyk V. M. Fibre laser welding of aluminium alloys of 7xxx series (Al–Zn–Mg–Cu) by nonthrough thickness welds [Електронний ресурс] / V. M. Korzhyk, V. Yu. Khaskin, A. A. Grynyuk, S. I. Peleshenko, Yuhui Yao, S. G. Hryhorenko, V. O. Shcheretskyi, O. S. Kushnareva // The Paton welding journal. - 2022. - Iss. 4. - С. 19-25. - Режим доступу: http://nbuv.gov.ua/UJRN/pwj_2022_4_6
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Korzhyk V. M. Selection of parameters of laser welding of thin-walled items from light alloys with nonthrough thickness penetration [Електронний ресурс] / V. M. Korzhyk, V. Yu. Khaskin, S. I. Peleshenko, A. A. Grynyuk, Dong Chunlin, E. V. Illyashenko, Yao Yuhui // The Paton welding journal. - 2022. - Iss. 5. - С. 16-25. - Режим доступу: http://nbuv.gov.ua/UJRN/pwj_2022_5_5
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Peleshenko S. I. Features of welding high-strength alloys based on aluminium and beryllium using highly-concentrated heat sources (Review) [Електронний ресурс] / S. I. Peleshenko, V. Yu. Khaskin, V. M. Korzhyk, V. V. Kvasnytskyi, A. A. Grynyuk, I. M. Klochkov, D. Chunling, A. O. Alyoshin // The Paton welding journal. - 2022. - Iss. 12. - С. 9-18. - Режим доступу: http://nbuv.gov.ua/UJRN/pwj_2022_12_4
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Korzhyk V. M. Features of laser-plasma welding of corrosion-resistant steel AISI 304 with laser application [Електронний ресурс] / V. M. Korzhyk, V. Yu. Khaskin, A. A. Grynyuk, E. V. Illyashenko, A. V. Bernatskyi, S. I. Peleshenko // The Paton welding journal. - 2021. - Iss. 12. - С. 9-17. - Режим доступу: http://nbuv.gov.ua/UJRN/pwj_2021_12_4
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Yao Juihuei Concept of creation of an improved artifical intelligence system and computerized trainer for virtual welding [Електронний ресурс] / Yao Juihuei, S. I. Peleshenko, V. N. Korzhik, V. Yu. Khaskin, V. V. Kvasnitsky // The Paton welding journal. - 2017. - No. 5-6. - С. 19-26. - Режим доступу: http://nbuv.gov.ua/UJRN/pwj_2017_5-6_5
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Korzhik V. N. Development of automated equipment for manufacturing 3D metal products based on additive technologies [Електронний ресурс] / V. N. Korzhik, A. N. Vojtenko, S. I. Peleshenko, V. I. Tkachuk, V. Yu. Khaskin, A. A. Grinyuk // The Paton welding journal. - 2017. - No. 5-6. - С. 79-85. - Режим доступу: http://nbuv.gov.ua/UJRN/pwj_2017_5-6_16
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Grinyuk A. A. Hybrid technologies of welding aluminium alloys based on consumable electrode arc and constricted arc [Електронний ресурс] / A. A. Grinyuk, V. N. Korzhik, V. E. Shevchenko, A. A. Babich, S. I. Peleshenko // The Paton welding journal. - 2016. - No. 5-6. - С. 98-103. - Режим доступу: http://nbuv.gov.ua/UJRN/pwj_2016_5-6_19
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Korzhik V. N. 3D-printing of metallic volumetric parts of complex shape based on welding plasma-arc technologies (Review) [Електронний ресурс] / V. N. Korzhik, V. Yu. Khaskin, A. A. Grinyuk, V. I. Tkachuk, S. I. Peleshenko, V. V. Korotenko, A. A. Babich // The Paton welding journal. - 2016. - No. 5-6. - С. 117-123. - Режим доступу: http://nbuv.gov.ua/UJRN/pwj_2016_5-6_22
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