Temat: grain coarsening - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Microstructure and residual stress analysis of Strenx 700 MC welded joint
Autorzy:: Trško, Libor
Lago, Ján
Jambor, Michal
Nový, František
Bokůvka, Otakar
Florková, Zuzana
Powiązania:: https://bibliotekanauki.pl/articles/1839521.pdf
Data publikacji:: 2020
Wydawca:: Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:: residual stress
high strength steel
welding
microstructure
grain coarsening
naprężenia szczątkowe
stal o wysokiej wytrzymałości
spawalnictwo
mikrostruktura
Opis:: High strength low alloy (HSLA) steels are a new generation of plain carbon steels with significantly improved mechanical properties while maintaining good weldability with common commercial techniques. Residual stress and microstructural analysis of welded HSLA Strenx 700 MC was carried out in this research. Results have shown that the welding process causes significant grain coarsening in the heat affected zone. The microstructural changes are also accompanied with creation of tensile residual stress field in the weld metal and heat affected zone, reaching up-to depth of 4 mm. Tensile residual stresses are well known for acceleration of fatigue crack initiation and together with coarse grains can lead to significant decrease of the fatigue properties of the welded structure.
Źródło:: Production Engineering Archives; 2020, 26, 2; 41-44
2353-5156
2353-7779
Pojawia się w:: Production Engineering Archives
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Recent Developments on Discontinuous Precipitation
Autorzy:: Zięba, P.
Powiązania:: https://bibliotekanauki.pl/articles/353282.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: discontinuous precipitation
discontinuous coarsening
grain boundary diffusion
Opis:: The discontinuous precipitation (DP) belongs to a group of diffusive solid state phase transformations during which the formation of a new phase is heterogeneous and limited to a migrating reaction front (RF). The use of analytical electron microscopy provided reliable information that there is no differences in the diffusion rate at the stationary grain boundary and moving RF of DP reaction. On the other hand, the use of “in situ” transmission electron microscopy observations indicated the importance of stop- go motion or oscillatory movement of the RF. During 2004-2016 period more or less 280 papers were published in which the terms “discontinuous precipitation, “cellular precipitation”, discontinuous coarsening” appeared either in the abstract or in key-words. In the present contribution, the research on the DP reaction will be reviewed taking into account new aspects of theories and modelling, new evidences and findings, effect of various factors including third element, external stresses, plastic deformation and GB orientation, occurrence in less known systems and alloys like: superalloys, nitrided Fe-based alloys and Cu-based alloys. Finally, some suggestions for the future research will be formulated.
Źródło:: Archives of Metallurgy and Materials; 2017, 62, 2A; 955-968
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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