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.Basic information
Original name
A New Method of Predicting the Structural and Mechanical Change of Materials during Extrusion by the Method of Multiple Plastic Deformations
Authors
HARNIČÁROVÁ, Marta (203 Czech Republic, guarantor, belonging to the institution); Jan VALÍČEK (203 Czech Republic, belonging to the institution); Milena KUŠNEROVÁ (203 Czech Republic, belonging to the institution); Zuzana PALKOVÁ (703 Slovakia, belonging to the institution); Ivan KOPAL; Cristina BORZAN; Milan KADNÁR and Stanislav PAULOVIČ
Edition
Materials, Basel, Switzerland, MDPI, 2021, 1996-1944
Other information
Language
English
Type of outcome
Article in a journal
Field of Study
20501 Materials engineering
Country of publisher
Switzerland
Confidentiality degree
is not subject to a state or trade secret
References:
Impact factor
Impact factor: 3.748
RIV identification code
RIV/75081431:_____/21:00002097
Organization unit
Institute of Technology and Business in České Budějovice
EID Scopus
2-s2.0-85106741810
Keywords in English
welding; distortion; stamping; model; prediction
Changed: 25/6/2021 08:49, Mgr. Nikola Petříková
Abstract
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. "