Zobrazeno 1 - 10
of 141
pro vyhledávání: '"Tibor Kvačkaj"'
Autor:
Rudolf Pernis, Tibor Kvackaj
Publikováno v:
Journal of Applied Mathematics, Vol 2015 (2015)
The calculation of average material contact pressure to rolls base on mathematical theory of rolling process given by Karman equation was solved by many authors. The solutions reported by authors are used simplifications for solution of Karman equati
Externí odkaz:
https://doaj.org/article/56fec8546b6342d68a9ff2be40811f9d
Publikováno v:
Materials, Vol 16, Iss 19, p 6473 (2023)
The article deals with increasing the mechanical properties of stainless steel 316 Ln-IG, which is intended for work in cryogenic temperatures (liquid nitrogen and liquid helium), such as conductor conduits for the ITER magnet system. The strength an
Externí odkaz:
https://doaj.org/article/9117acb4a39a4235b99c4c5d1350d6d8
Autor:
Patrik Petroušek, Tibor Kvačkaj, Jana Bidulská, Róbert Bidulský, Marco Actis Grande, Diego Manfredi, Klaus-Peter Weiss, Róbert Kočiško, Miloslav Lupták, Imrich Pokorný
Publikováno v:
Materials, Vol 16, Iss 11, p 3935 (2023)
Additive manufacturing, including laser powder bed fusion, offers possibilities for the production of materials with properties comparable to conventional technologies. The main aim of this paper is to describe the specific microstructure of 316L sta
Externí odkaz:
https://doaj.org/article/2884c47a99c84dbc87452a7653b22d9b
Autor:
Róbert Kočiško, Tibor Kvačkaj, Jana Bidulská, Róbert Bidulský, Patrik Petroušek, Imrich Pokorný, Miloslav Lupták, Marco Actis Grande
Publikováno v:
Materials, Vol 16, Iss 2, p 601 (2023)
The aim of the article is to examine the workability of sintered powder material of aluminum alloy (Alumix 321) through severe plastic deformations under the conditions of the equal channel angular rolling (ECAR) process. Accordingly, the stress–st
Externí odkaz:
https://doaj.org/article/c09595e935a348e0903ce052a7c71903
Autor:
Róbert Bidulský, Jana Bidulská, Federico Simone Gobber, Tibor Kvačkaj, Patrik Petroušek, Marco Actis-Grande, Klaus-Peter Weiss, Diego Manfredi
Publikováno v:
Materials, Vol 13, Iss 15, p 3328 (2020)
Additive manufacturing is a key enabling technology in the manufacture of highly complex shapes, having very few geometric limitations compared to traditional manufacturing processes. The present paper aims at investigating mechanical properties at c
Externí odkaz:
https://doaj.org/article/e1dfc661e2184975bd2209a6aea9bf48
Publikováno v:
Advances in Sciences and Technology, Vol 9, Iss 28, Pp 56-60 (2015)
The paper is concerned with an analysis of utility and fatigue properties of industrially produced aluminium alloy, specifically EN AW 6061 (AlMg1SiCu), reinforced with the particles of SiC. The following properties were subject to evaluation: micros
Externí odkaz:
https://doaj.org/article/05b4d8fe7bd3470ba6253ae484465dba
Publikováno v:
Acta Metallurgica Slovaca, Vol 23, Iss 2 (2017)
Ultrafine grained materials are capable of superplastic elongation at strain rates faster than those currently employed for commercial superplastic forming operations. However, such operations require the material in the form of thin sheets. Asymmetr
Externí odkaz:
https://doaj.org/article/436ef87faf94434bb699f0bb9a19ea8e
Publikováno v:
Materials, Vol 12, Iss 22, p 3724 (2019)
In powder metallurgy (PM), severe plastic deformation (SPD) is a well-known technological solution to achieve interesting properties. However, the occurrence of pores in the final product may limit these properties. Also, for a given type of microstr
Externí odkaz:
https://doaj.org/article/2df441e0b81a4311b824755f541e8f85
Autor:
Alica Fedoriková, Tibor Kvačkaj, Róbert Kočiško, Róbert Bidulský, Patrik Petroušek, Jana Bidulská, Lucia Domovcová
Publikováno v:
Acta Metallurgica Slovaca, Vol 22, Iss 2 (2016)
This paper is focused on the evaluation of formability of heat resistant steel type 9Cr-1Mo by laboratory numerical simulation – hot compression test confirmed by laboratory hot compression test. The 9Cr-1Mo steel represents modern 9%Cr tempered ma
Externí odkaz:
https://doaj.org/article/bfa59305e5a14da88962dcda7823a70e
Autor:
Patrik Petroušek, Tibor Kvačkaj, Róbert Kočiško, Róbert Bidulský, Jana Bidulská, Alica Fedoriková, Tomáš Hlava
Publikováno v:
Acta Metallurgica Slovaca, Vol 21, Iss 3 (2015)
In this paper is evaluated workability of rolled aluminium alloy based AIMgSi. Static tension test was used for obtained the mechanical properties, such as tensile strength, yield strength, elongation, the strain hardening exponent and coefficient of
Externí odkaz:
https://doaj.org/article/f872651698b3468a861186df63d88ff5