Experimental Study of the Defect Layer on Workpieces, grown by the DMD method
- Authors: Ardashev D.V.1, Dyuryagin A.A.1, Galimov D.M.1
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Affiliations:
- Issue: Vol 22, No 4 (2020)
- Pages: 6-17
- Section: TECHNOLOGY
- URL: https://journal-vniispk.ru/1994-6309/article/view/302000
- DOI: https://doi.org/10.17212/1994-6309-2020-22.4-6-17
- ID: 302000
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Abstract
Introduction. At this time, new methods of manufacturing workpieces are gaining great popularity, for example, additive technologies. Methods for growing workpieces by sintering a powder with a laser make it possible to manufacture parts of complex shapes that are impossible or rather difficult to obtain by traditional methods, such as casting, forging, etc. However, the details, obtained by means of additive technologies, in particular the DMD method (Direct Metal Deposition), do not correspond with the accuracy requirements. Consequently, such workpieces require further processing by turning, milling or grinding. To design an operation for machining parts, it is necessary to know the machining allowances, the magnitude of errors formed during the blank operation, so that after its removal the processed part meets the requirements of the drawing. The purpose of the work: experimental study of the size of the defect layer in the near-surface layers of generative workpieces made of Stellite 6 and CuAl10Fe4, grown by DMD method, using microstructural methods. In the work, using a microscope, a study is carried out, which consisted in the visual determination of the defective layer, which differs in structure; measuring its size; carrying out a chemical analysis; determining the nature of the change in microhardness. The research method is a microscopic examination of deposited materials Stellite 6 and CuAl10Fe4 (CuAl10Fe4). From the pictures taken with a microscope, it is possible to establish the linear size of the defect layer. Results and Discussion. Vortex formations are found in the melting zone, its chemical analysis is carried out and it is found that the concentration of chemical elements in these areas changes and includes both elements of the powder material and the substrate material. Measurement of microhardness showed that it decreases with depth from the surface of the deposited material to the substrate. Thus, the use of the technique presented in this paper for microscopic studies of the structure, chemical composition and microhardness of workpieces, grown by the DMD method will allow to predict the value of processing allowances in the future, during the designing of mechanical processing operation of generative workpieces.
About the authors
D. V. Ardashev
Email: ardashevdv@susu.ru
D.Sc. (Engineering), Associate Professor, South Ural State University, 76 Lenin prospekt, Chelyabinsk, 454080, Russian Federation, ardashevdv@susu.ru
A. A. Dyuryagin
Email: s.dyuryagin@mail.ru
South Ural State University, 76 Lenin prospekt, Chelyabinsk, 454080, Russian Federation, s.dyuryagin@mail.ru
D. M. Galimov
Email: galimovdm@susu.ru
South Ural State University, 76 Lenin prospekt, Chelyabinsk, 454080, Russian Federation, galimovdm@susu.ru
References
- Pinkerton A.J. Laser direct metal deposition: theory and applications in manufacturing and maintenance // Advances in Laser Material Processing: Technology, Research and Application. – Cambridge: Woodhead Publishing, 2010. – P. 461–491. – doi: 10.1533/9781845699819.6.461.
- Experimental and numerical study of the influence of induction heating process on build rates Induction Heating-assisted laser Direct Metal Deposition (IH-DMD) / M.T. Dalaee, L. Gloor, C. Leinenbach, K. Wegener // Surface and Coating Technology. – 2020. – Vol. 384. – P. 125275. – doi: 10.1016/j.surfcoat.2019.125275.
- Aghili S.E., Shamanian M. Investigation of powder fed laser cladding of NiCr-chromium carbides singlesubstrate // Optics & Laser Technology. – 2019. – Vol. 119. – Art. 105652. – doi: 10.1016/j.optlastec.2019.105652.
- Leyens C., Beyer E. Innovations in laser cladding and direct laser metal deposition // Laser Surface Engineering. – Cambridge: Woodhead Publishing, 2015. – P. 181–192. – doi: 10.1016/B978-1-78242-074-3.00008-8.
- Yang Y.H., Wu F.B. Microstructure evolution and protective properties of TaN multilayer coatings // Surface and Coating Technology. – 2006. – Vol. 308. – P. 108–114. – doi: 10.1016/j.surfcoat.2016.05.091.
- CrVN/TiN nanoscale multilayer coatings deposited by DC unbalanced magnetron sputtering / E. Contreras, Y. Galindez, M.A. Rodas, G. Bejarano, M.A. Gomez // Surface and Coating Technology. – 2017. – Vol. 332. – P. 214–222. – doi: 10.1016/j.surfcoat.2017.07.086.
- Дранков А.В. Изготовление деталей РКТ из отечественного порошка нержавеющей стали // Аддитивные технологии. – 2019. – № 2. – С. 50–55.
- Das S. Producing metal parts with selective laser sintering/hot isostatic pressing // JOM. – 1998. – Vol. 50. – P. 17–20. – doi: 10.1007/s11837-998-0299-1.
- Кован В.М. Расчет припусков на обработку в машиностроении: справочное пособие. – М.: Машгиз, 1953. – 210 с.
- Eguzwu E.O. Key improvement in the machining of difficult-to-cut aerospace superalloys // International Journal of Machine Tools & Manufacture. – 2005. – Vol. 45. – P. 1353–1367. – doi: 10.1016/j.ijmachtools.2005.02.003.
- Study of the structural characteristics of titanium alloy products manufactured using additive technologies by combining the selective laser melting and direct metal deposition methods / M. Samodurova, I. Logachev, N. Shaburova, O. Samoilova, L. Radionova, R. Zakirov, K. Pashkeev, V. Myasoedov, E. Trofimov // Materials. – 2019. – Vol. 12. – doi: 10.3390/ma12193269.
- Бурова Д.Н., Цебрук И.С., Классен Н.В. Исследования и применения влияния магнитного поля на систему «железо-медь-вода» // XVII Всероссийская с международным участием школа-семинар по структурной макрокинетике для молодых ученых имени академика А.Г. Мержанова. – Черноголовка, 2019. – С. 134–136. – doi: 10.24411/9999-004А-2019-10045.
- Microstructure and high temperature mechanical properties of wire arc additively deposited stellite 6 alloy / G.P. Rajeev, M.R. Rahul, M. Kamaraj, S.R. Bakshi // Materialia. – 2020. – Vol. 12. – doi: 10.1016/j.mtla.2020.100724.
- Туричин Г.А., Сомонов В.В., Климова О.Г. Исследование и моделирование процесса формирования наплавочного валика и микроструктуры при лазерной наплавке излучением мощного волоконного лазера // Инновационные технологии и экономика в машиностроении: сборник трудов V Международной научно-практической конференции. – Томск, 2014. – Т. 1. – С. 410–415.
- Григорьянц А.Г., Мисюров А.И., Третьяков Р.С. Анализ влияния параметров коаксиальной лазерной наплавки на формирование валиков // Технология машиностроения. – 2011. – № 11. – С. 19–21.
- Moosa A.A., Kadhim M.J., Subhi A.D. Dilution effect during laser cladding of inconel 617 with Ni-Al powders // Modern Applied Science. – 2011. – Vol. 5. – P. 50–55. – doi: 10.5539/mas.v5n1p50.
- Веденов А.А. Физические процессы при лазерной обработке материалов. – М.: Энергомашиздат, 1985. – 208 с.
- Simulation and experimental investigations on the effect of Marangoni convection on thermal field during laser cladding process / Y. Jiang, Y. Cheng, X. Zhang, J. Yang, X. Yang, Z. Cheng // Optik. – 2020. – Vol. 203. – doi: 10.1016/j.ijleo.2019.164044.
- Бобученко Д.С. Численное моделирование газопорошковой лазерной наплавки металлических материалов на подложки // Математическое моделирование. – 1991. – Т. 3. – С. 109–122.
- Шпилев А.И. Исследование и оптимизация газопорошковых потоков в головках для лазерной порошковой наплавки: дис. … канд. техн. наук: 01.02.05. – Казань, 2018. – 179 с.
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