ANISOTROPY OF MECHANICAL PROPERTIES OF PRODUCTS MANUFACTURED USING SELECTIVE LASER MELTING OF POWDERED MATERIALS
https://doi.org/10.17073/1997-308X-2016-3-4-11
Abstract
The paper examines factors leading to anisotropy of properties in products manufactured using lasercusing, a technology consisting in selective laser melting of metal powdered materials. The results obtained when evaluating mechanical properties of specimens made of titanium alloys Ti–6Al–4V, VT6 and heat-resistant nickel alloy Inconel 718 in different directions are presented. The study covers the microstructure of compact specimens obtained using selective laser melting, and describes dependence of their mechanical properties on workpiece orientation with relation to the unit working platform. The study of Ti–6Al–4V microsections showed that the direction of the rectangular specimen grain structure matched the growth direction, whereas thin elements with a lattice structure were made with other thermal processes due to their smaller cross section. This affected crystallization conditions and microstructure being formed: grain directions and shapes changed depending on the lattice structure element inclination.
About the Authors
A. A. Popovich
Peter the Great Saint-Petersburg Polytechnic University, Sankt-Peterburg
Russian Federation
Russian Federation
Popovich A.A. – Dr. Sci. (Tech), Prof., Department of material science and technology of Peter the Great St. Petersburg University (SPbPU), Director of Institute of metallurgy, mechanical engineering and transport SPbPU.
195251, Russia, St. Petersburg, Polytechnicheskaya str., 29. E-mail: popovicha@mail.ruV. Sh. Sufiiarov
Peter the Great Saint-Petersburg Polytechnic University, Sankt-Peterburg
Russian Federation
Russian Federation
Sufiiarov V.Sh. – PhD, Leading Researcher of Laboratory of functional materials
E. V. Borisov
Peter the Great Saint-Petersburg Polytechnic University, Sankt-Peterburg
Russian Federation
Russian Federation
Borisov E.V. – Post-Graduate Student of Department of material science and technology, Researcher of Laboratory of functional materials
I. A. Polozov
Peter the Great Saint-Petersburg Polytechnic University, Sankt-Peterburg
Russian Federation
Polozov I.A. – Student of Department of material science and technology, Engineer of Laboratory of functional materials
Russian Federation
Polozov I.A. – Student of Department of material science and technology, Engineer of Laboratory of functional materials
D. V. Masaylo
Peter the Great Saint-Petersburg Polytechnic University, Sankt-Peterburg
Russian Federation
Russian Federation
Masaylo D.V. – Leading Engineer of Laboratory of functional materials
A. V. Grigoriev
Peter the Great Saint-Petersburg Polytechnic University, Sankt-Peterburg; «Klimov», JSC, , Sankt-Peterburg
Russian Federation
Russian Federation
Grigoriev A.V. – Post-Graduate Student of Department of material science and technology, SPbPU, Chief Designer of JSC «Klimov».
194100, Russia, St. Petersburg, Kantemirovskaya str., 11. E-mail: klimov@klimov.ru
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Review
For citations:
Popovich A.A., Sufiiarov V.Sh., Borisov E.V., Polozov I.A., Masaylo D.V., Grigoriev A.V. ANISOTROPY OF MECHANICAL PROPERTIES OF PRODUCTS MANUFACTURED USING SELECTIVE LASER MELTING OF POWDERED MATERIALS. Powder Metallurgy аnd Functional Coatings (Izvestiya Vuzov. Poroshkovaya Metallurgiya i Funktsional'nye Pokrytiya). 2016;(3):4-11. (In Russ.) https://doi.org/10.17073/1997-308X-2016-3-4-11
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