Number of found documents:
33566
Published from
to
School QR workshop
2024 -
Keywords:
QR kód; webový návod; bezpečnost práce
Available in the ZČU Library.
School QR workshop
An outdoor game inspired by game shows and games from various corners of the world
2024 -
Keywords:
terénní hra; herní show; zábava; učení hrou; kultura
Available in the ZČU Library.
An outdoor game inspired by game shows and games from various corners of the world
Stanovení ztratového součinitelé kónických redukcí ruzných rozměrů prostřednictvím numerických simulací
2024 -
Keywords:
numerická simulace; redukce; ztrátový součinitel
Available in the ZČU Library.
Stanovení ztratového součinitelé kónických redukcí ruzných rozměrů prostřednictvím numerických simulací
Neautonomní dynamické systémy a jejich aplikace
2024 -
Keywords:
dynamické systémy; neautonomní růstové modely; analýza
Available in the ZČU Library.
Neautonomní dynamické systémy a jejich aplikace
Komprese konektivity trojúhelníkovych sítí se známou geometrií s využitím neuronových sítí
2024 -
Keywords:
neuronové sítě; geometrie; konektivita trojúhelníkové sítě
Available in the ZČU Library.
Komprese konektivity trojúhelníkovych sítí se známou geometrií s využitím neuronových sítí
Approaches to the computational modelling of soft tissues related to cutting
2024 -
Keywords:
měkké tkáně; výpočetní modelování; simulace
Available in the ZČU Library.
Approaches to the computational modelling of soft tissues related to cutting
Voice-Interactive Semantic Search Interface with Vector Databases
2024 -
Keywords:
sémantické vyhledávání; vektorová databáze; hlas
Available in the ZČU Library.
Voice-Interactive Semantic Search Interface with Vector Databases
Image Domain Transfer for Liver Analysis in Histology
2024 -
Keywords:
CycleGAN; převod domény obrázku; játra; histologie
Available in the ZČU Library.
Image Domain Transfer for Liver Analysis in Histology
Deep learning methods for Motor Imagery EEG Signal Classification
2024 -
Keywords:
hluboké učení; EEG signal; motor
Available in the ZČU Library.
Deep learning methods for Motor Imagery EEG Signal Classification
Microstructure modifications of Al-Si-coated press-hardened steel 22MnB5 by laser welding
Šebestová, Hana; Horník, Petr; Mika, Filip; Mikmeková, Šárka; Ambrož, Ondřej; Mrňa, Libor
2024 - English
Weld microstructure depends on the characteristics of welded materials and parameters of welding technology, especially on the heat input that determines the peak temperature and the cooling rate. When the coated sheets are welded, the effect of the chemical composition of the coating must be also considered even though its thickness is only a few tens of microns. During 22MnB5+AlSi laser welding experiments, the ferrite-stabilizing elements of coating modified the weld metal microstructure. Ferrite appeared in a quenched weld metal. The rapid cooling rate accompanying welding with a focused beam limited the homogenization of the weld metal which resulted in the formation of ferritic bands in the regions rich in Si and especially in Al. On the other hand, a high level of homogenization was reached when welding with the defocused beam. The ferritic islands uniformly distributed in the weld metal were formed at 0.4 wt% and 1.6 wt% of Si and Al, respectively. The doubled heat input reduced the Al content to 0.7 wt% insufficient for the ferrite formation at still relatively high cooling rates. Predicting the distribution of ferrite in the weld metal is challenging due to its dependence on various factors, such as cooling rate and the volume of dissolved coating, which may vary with any modifications made to the welding parameters.
Keywords:
laser welding; high-strength steel; microstructure; heat input; ferrite stabilization
Available at various institutes of the ASCR
Microstructure modifications of Al-Si-coated press-hardened steel 22MnB5 by laser welding
Weld microstructure depends on the characteristics of welded materials and parameters of welding technology, especially on the heat input that determines the peak temperature and the cooling rate. ...
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