Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Krzysztof Mroczka"'
Autor:
Krzysztof Mroczka, Carter Hamilton, Aleksandra Węglowska, Mateusz Kopyściański, Stanisław Dymek, Adam Pietras
Publikováno v:
Materials, Vol 17, Iss 15, p 3705 (2024)
A novel dual-speed tool for which the shoulder and pin rotation speeds are separately established was utilized to friction stir weld cast magnesium AZ91 with wrought aluminum 6082-T6. To assess the performance and efficacy of the dual-speed tool, bas
Externí odkaz:
https://doaj.org/article/8497ab5c2b5542cb97e5caa0dade64ef
Autor:
Marek Zajusz, Monika Jawańska, Juliusz Dąbrowa, Katarzyna Berent, Grzegorz Cieślak, Tadeusz Kulik, Krzysztof Mroczka
Publikováno v:
Materials Research Letters, Vol 10, Iss 8, Pp 556-565 (2022)
The diffusion kinetics of the BCC-structured high-entropy alloys (HEAs) is studied experimentally for the first time. First, the literature data regarding the transition-metal based, single-phase, BCC-structured HEAs is re-evaluated using the state-o
Externí odkaz:
https://doaj.org/article/24aa2d3b4b2e4dfabfb130365aa15964
Autor:
Krzysztof Mroczka, Stanisław Dymek, Aleksandra Węglowska, Carter Hamilton, Mateusz Kopyściański, Adam Pietras, Paweł Kurtyka
Publikováno v:
Materials, Vol 16, Iss 11, p 3953 (2023)
For the friction stir welding (FSW) of AZ91 magnesium alloy, low tool rotational speeds and increased tool linear speeds (ratio 3.2) along with a larger diameter shoulder and pin are utilized. The research focused on the influence of welding forces a
Externí odkaz:
https://doaj.org/article/4bf8b2df683e4e52a08d454ffd1025e1
Autor:
Anna Wójcicka, Łukasz Walusiak, Krzysztof Mroczka, Joanna Krystyna Jaworek-Korjakowska, Krzysztof Oprzędkiewicz, Zygmunt Wrobel
Publikováno v:
Materials, Vol 15, Iss 3, p 1129 (2022)
Friction stir welding (FSW) is an environmentally friendly, solid-state welding technique. In this research work, we analyze the microstructure of a new type of FSW weld applying a two- stage framework based on image processing algorithms containing
Externí odkaz:
https://doaj.org/article/f93070b492c64ded865f9db7cff2c864
Publikováno v:
Materials, Vol 13, Iss 22, p 5224 (2020)
The elaboration of a modified friction-extrusion method aimed at obtaining 2017A aluminum rods of gradient microstructure is described. This was achieved by cutting spiral grooves on the face of the stamp used for alloy extrusion. The experiments wer
Externí odkaz:
https://doaj.org/article/0528b461e0614eb2b7dda3c3ccb29e5b
Autor:
Krzysztof Mroczka, Stanisław Dymek, Adam Pietras, Aleksandra Węglowska, Carter Hamilton, Mateusz Kopyściański
Publikováno v:
The Minerals, Metals & Materials Series ISBN: 9783031226601
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b1e2652e6a529f0b5c4cb0500924e0a0
https://doi.org/10.1007/978-3-031-22661-8_20
https://doi.org/10.1007/978-3-031-22661-8_20
Autor:
Maciej Bik, Mathias Galetz, Lukas Mengis, Emma White, Wojciech Wieczorek, Klaudia Łyszczarz, Krzysztof Mroczka, Jakub Marchewka, Maciej Sitarz
Publikováno v:
Applied Surface Science. 632:157601
Autor:
Aleksander Gil, Juliusz Dąbrowa, Marek Zajusz, K. Matsuda, Marek Danielewski, Grzegorz Cieślak, Krzysztof Mroczka, Monika Jawańska, M. Stygar, Jerzy Jedlinski, Tadeusz Kulik
Publikováno v:
Oxidation of Metals. 96:307-321
The oxidation behavior of five different high-entropy alloys from the Al–Co–Cr–Fe–Ni metallic system, namely Alx(CoCrFeNi)100-x (x = 0; 3; 6; 9; 12), was studied under thermal-cycling conditions, at 1273 K in air atmosphere. The choice of sel
Autor:
M. Stygar, Marek Zajusz, Krzysztof Mroczka, Wojciech Skubida, Katarzyna Berent, Konrad Świerczek, Maciej Moździerz, Marek Danielewski, Juliusz Dąbrowa
Publikováno v:
Journal of the European Ceramic Society. 40:1644-1650
Possibility of formation of quinary and senary equimolar high entropy oxides from the Co-Cr-Fe-Mg-Mn-Ni-O system is presented. Different proposed compositions are synthesized using the solid-state reaction route at high temperatures (900−1100 °C)
Autor:
Krzysztof Mroczka, G. Smoła, M. Stygar, Marek Zajusz, Zbigniew Grzesik, Marek Danielewski, Juliusz Dąbrowa
Publikováno v:
Journal of the European Ceramic Society. 39:4292-4298
The defect structure and chemical diffusion in the (Co,Cu,Mg,Ni,Zn)O high entropy oxide were investigated. The material was synthesized in a form of pellets by means of a solid-state reaction, through sintering the mixture of composing oxides at 1273