Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Łukasz Rakoczy"'
Autor:
Rafał Cygan, Łukasz Rakoczy
Publikováno v:
Materials, Vol 16, Iss 16, p 5588 (2023)
In this work, three melt-pouring temperatures (1450 °C, 1480 °C, 1520 °C) and CoAl2O4 inoculant contents in the shell mold’s primary coating (0 wt%, 5 wt%, and 10 wt%) were selected to study microstructural and mechanical property changes of the
Externí odkaz:
https://doaj.org/article/2a970731865241ca9ae7cd7cfb3cb60e
Autor:
Małgorzata Grudzień-Rakoczy, Łukasz Rakoczy, Rafał Cygan, Konrad Chrzan, Ondrej Milkovič, Zenon Pirowski
Publikováno v:
Materials, Vol 15, Iss 9, p 3296 (2022)
The as-cast microstructure, alloying element segregation, solidification behavior, and thermal stability of model superalloys based on Inconel 740 with various Al/Ti ratios (0.7, 1.5, 3.4) and Ta (2.0, 3.0, 4.0 wt%) concentrations were investigated v
Externí odkaz:
https://doaj.org/article/94726e5c900848f2942d90e7a29a20af
Autor:
Łukasz Rakoczy, Bogdan Rutkowski, Małgorzata Grudzień-Rakoczy, Rafał Cygan, Wiktoria Ratuszek, Anna Zielińska-Lipiec
Publikováno v:
Materials, Vol 13, Iss 19, p 4452 (2020)
The microstructure of a René 108 Ni-based superalloy was systematically investigated by X-ray diffraction, light microscopy, energy-dispersive X-ray spectroscopy, and electron microscopy techniques. The material was investment cast in a vacuum and t
Externí odkaz:
https://doaj.org/article/2454dff72b8944f5a9d0ce97c4aaed68
Autor:
Łukasz Rakoczy, Ondrej Milkovič, Bogdan Rutkowski, Rafał Cygan, Małgorzata Grudzień-Rakoczy, František Kromka, Anna Zielińska-Lipiec
Publikováno v:
Materials, Vol 13, Iss 10, p 2397 (2020)
In situ X-ray diffraction and transmission electron microscopy has been used to investigate René 108 Ni-based superalloy after short-term annealing at high-homologous temperatures. Current work is focused on characterisation of γ′ precipitates, t
Externí odkaz:
https://doaj.org/article/f962bd788ed844b8bf58990eb40bc3eb
Autor:
Małgorzata Grudzień-Rakoczy, Łukasz Rakoczy, Rafał Cygan, František Kromka, Zenon Pirowski, Ondrej Milkovič
Publikováno v:
Materials, Vol 13, Iss 10, p 2362 (2020)
The chemical composition of standard Inconel 740 superalloy was modified by changes in the Al/Ti ratio (0.7, 1.5, 3.4) and addition of Ta (2.0, 3.0, 4.0%). Remelted Inconel 740 (A0) and nine variants with various chemical compositions were fabricated
Externí odkaz:
https://doaj.org/article/3b003182c7cc46209517a84f352881ed
Publikováno v:
Przegląd Spawalnictwa, Vol 89, Iss 10 (2017)
The paper presents characterization of structural high- strength steels and the fundamentals of steel strengthening and hardening to guarantee good mechanical properties. Moreover, the microstructure evaluation of laser beam butt welded joints of ste
Externí odkaz:
https://doaj.org/article/639671ae642e408bb022c66b31e26f1e
Publikováno v:
Przegląd Spawalnictwa, Vol 88, Iss 4 (2016)
W artykule przedstawiono próbę implantacyjną oceny skłonności do pęknięć zimnych złączy spawanych. Przedstawiono również wyniki próby dla stali 7CrMoVTiB10-10 oraz badania w zakresie oceny charakteru przełomu. Evaluation of susceptibili
Externí odkaz:
https://doaj.org/article/4437393e858e41038a153dce1d2c29ed
Publikováno v:
Przegląd Spawalnictwa, Vol 88, Iss 4 (2016)
Przedmiotem badań były złącza spawane ze stopu niklu umacnianego roztworowo o nazwie handlowej Hastelloy X. Proces spawania przeprowadzono metodą GTAW (z ang. Gas Tungsten Arc Welding) na materiale w stanie dostawy oraz po eksploatacji tj. pocho
Externí odkaz:
https://doaj.org/article/9ac5df82ebe34a7f8583b2459b628edb
Autor:
Anna Zielińska-Lipiec, Joel Andersson, Grzegorz Cempura, Łukasz Rakoczy, Fabian Hanning, Rafał Cygan, Małgorzata Grudzień-Rakoczy
Publikováno v:
Metallurgical and Materials Transactions A. 52:4767-4784
The equiaxed Ni-based superalloy René 108 was subjected to short-term annealing at five temperatures between 900 °C and 1100 °C. The phase composition, phase lattice parameters, microstructure, stereological parameters, and chemical composition of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a76551aab7a67df78a7e11fa803ca8fd
https://doi.org/10.1007/s11661-021-06420-4
https://doi.org/10.1007/s11661-021-06420-4
Autor:
Łukasz Rakoczy, Małgorzata Grudzień-Rakoczy, Bogdan Rutkowski, Rafał Cygan, Fabian Hanning, Grzegorz Cios, Stefan Habisch, Joel Andersson, Peter Mayr, Anna Zielińska-Lipiec
This work presents the influence of microstructural constituents on liquation crack formation in the cast Ni-based superalloy, René 108. The investigation was divided into three parts: characterisation of the material's microstructure in pre-weld co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8d48ca328fb46a624bfa5f3faf22e641
https://mediatum.ub.tum.de/1706858
https://mediatum.ub.tum.de/1706858
