Dynamic Behaviour of Selective Laser Melted 316L Steel : Mechanical Properties and Microstructure Changes

• Autorzy: Białobrzewski Paweł , Sienkiewicz Judyta , Janiszewski Jacek , Kluczyński Janusz

Identyfikatory

DOI

10.5604/01.3001.0053.6671

Warianty tytułu

PL

Dynamiczne zachowanie próbek ze stali 316L wytworzonych za pomocą metody SLM : właściwości mechaniczne i zmiany mikrostruktury

• Języki publikacji: EN

Abstrakty

EN

316L steel specimens with three different shear zones made by SLM (Selective Laser Melting) were subjected to dynamic tests using the Split Hopkinson Pressure Bar method. The effect of high-speed deformation on changes in microstructure was analyzed. In addition, the stress-strain relationship was determined from the SHPB results. To visualize the deformation process of the specimens during the tests, a camera with a high frame rate was used. It was shown that as the plastic deformation increases, the hardness of the material increases. Microstructural analysis of dynamically loaded areas revealed numerous defects. Twinning was found to be the main deformation mechanism. Large plastic deformation and many other microstructural changes such as shear bands, cracks and martensite nucleation were also observed.

PL

Próbki ze stali 316L z trzema różnymi strefami ścinania wykonane metodą SLM (Selective Laser Melting) poddano testom dynamicznym wykorzystując do tego metodę dzielonego pręta Hopkinsona (Split Hopkinson Pressure Bar). Przeanalizowano wpływ odkształceń o dużej szybkości na zmiany w mikrostrukturze. Ponadto na podstawie wyników badań SHPB wyznaczono zależność naprężenie- odkształcenie. W celu zobrazowania procesu odkształcania próbek podczas badań zastosowano kamerę o dużej częstości klatkowania. Wykazano, że wraz ze wzrostem odkształcenia plastycznego wzrasta twardość materiału. Analiza mikrostrukturalna obszarów obciążonych dynamicznie ujawniła liczne defekty. Stwierdzono, że głównym mechanizmem deformacji jest bliźniakowanie. Zaobserwowano również duże odkształcenia plastyczne i wiele innych zmian mikrostruktury, takich jak pasma ścinania, pęknięcia i zarodkowanie martenzytu.

Słowa kluczowe

EN

microstructure; stainless steel; selective laser melting; additive manufacturing; split Hopkinson pressure bar

PL

mikrostruktura; metoda addytowa; SLM; stal nierdzewna; test dzielonego pręta Hopkinsona

• Wydawca: Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
• Czasopismo: Problemy Mechatroniki : uzbrojenie, lotnictwo, inżynieria bezpieczeństwa
• Rocznik: 2023
• Tom: Vol. 14, Nr 2 (52)
• Strony: 51--72
• Opis fizyczny: Bibliogr. 23 poz., fot., rys., tab., wykr.

Twórcy

autor

Białobrzewski Paweł

• Military University of Technology, Faculty of Mechatronics, Armament and Aerospace, Institute of Armament Technology 2 Sylwestra Kaliskiego Str., 00-908 Warsaw, Poland

autor

Sienkiewicz Judyta

• Military University of Technology, Faculty of Mechatronics, Armament and Aerospace, Institute of Armament Technology 2 Sylwestra Kaliskiego Str., 00-908 Warsaw, Poland

• https://orcid.org/0000-0001-5372-1862

autor

Janiszewski Jacek

• Military University of Technology, Faculty of Mechatronics, Armament and Aerospace, Institute of Armament Technology 2 Sylwestra Kaliskiego Str., 00-908 Warsaw, Poland

autor

Kluczyński Janusz

• Military University of Technology, Faculty of Mechatronics, Armament and Aerospace, Institute of Armament Technology 2 Sylwestra Kaliskiego Str., 00-908 Warsaw, Poland

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).