2021
A New Method of Predicting the Structural and Mechanical Change of Materials during Extrusion by the Method of Multiple Plastic Deformations
HARNIČÁROVÁ, Marta; Jan VALÍČEK; Milena KUŠNEROVÁ; Zuzana PALKOVÁ; Ivan KOPAL et. al.Základní údaje
Originální název
A New Method of Predicting the Structural and Mechanical Change of Materials during Extrusion by the Method of Multiple Plastic Deformations
Autoři
HARNIČÁROVÁ, Marta (203 Česká republika, garant, domácí); Jan VALÍČEK (203 Česká republika, domácí); Milena KUŠNEROVÁ (203 Česká republika, domácí); Zuzana PALKOVÁ (703 Slovensko, domácí); Ivan KOPAL; Cristina BORZAN; Milan KADNÁR a Stanislav PAULOVIČ
Vydání
Materials, Basel, Switzerland, MDPI, 2021, 1996-1944
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
20501 Materials engineering
Stát vydavatele
Švýcarsko
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 3.748
Kód RIV
RIV/75081431:_____/21:00002097
Organizační jednotka
Vysoká škola technická a ekonomická v Českých Budějovicích
EID Scopus
2-s2.0-85106741810
Klíčová slova anglicky
welding; distortion; stamping; model; prediction
Změněno: 25. 6. 2021 08:49, Mgr. Nikola Petříková
Anotace
V originále
"The formulation of the Hall–Petch relationship in the early 1950s has raised immense interest in studying the influence of the grain size of solid materials on their properties. Grain refinement can be achieved through extreme deformation. In the presented study, Equal-Channel Angular Pressing (ECAP) was successfully applied to produce an ultrafine-grained microstructure in a pure commercial Cu of 99.9 wt%. Samples were processed by ECAP at 21 ◦C for six passes via route A. A new equation of equilibrium that allows the exact determination of the number of extrusions and other technological parameters required to achieve the desired final grain size has been developed. The presented research also deals, in a relatively detailed and comparative way, with the use of ultrasound. In this context, a very close correlation between the process functions of extrusion and the speed of longitudinal ultrasonic waves was confirmed. "