Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Róbert Kociško"'
Publikováno v:
Metals, Vol 13, Iss 8, p 1415 (2023)
Cold-rolled silicon steel strip products are widely used as the main soft magnetic components in cores of electrical motors, generators, and transformers. In the case of rotating electrical machines, the so-called non-oriented electro-technical steel
Externí odkaz:
https://doaj.org/article/0972a876f64c464a8388faca896bd6ed
Publikováno v:
Acta Polytechnica, Vol 56, Iss 5, Pp 353-359 (2016)
This paper reports on an experiment to assess the influence of plastic deformation on the microstructure and properties of EN AW 6012 (AlMgSiPb) aluminium alloy in two states. The first was the initial state with heat treatment T3, and the second was
Externí odkaz:
https://doaj.org/article/d9cc82d2b4b84eb0a3a609d9324d7789
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
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
Publikováno v:
Acta Metallurgica Slovaca, Vol 20, Iss 3 (2014)
This article deals with the analysis and comparison of the conditions for solid state welding during extrusions by means of numerical simulation. Numerical simulations made on four different matrices, such as square die without integrated extrusion a
Externí odkaz:
https://doaj.org/article/d9eb043bbec04930a04afeec363c5fe7
Publikováno v:
Acta Polytechnica, Vol 55, Iss 5, Pp 301-305 (2015)
This study reports on an investigation of factors affect the process of compacting Al chips which are used to direct scrap processing through the forward extrusion method. EN AW 6060 chips of different geometry and types were mainly used as the exper
Externí odkaz:
https://doaj.org/article/ae274ec3d06b497a877fad16b0b67a15
Autor:
Shuaishuai Qin, Seungwon Lee, Taiki Tsuchiya, Kenji Matsuda, Zenji Horita, Robert Kocisko, Tibor Kvackaj
Publikováno v:
Materials & Design, Vol 196, Iss , Pp 109139- (2020)
Structural features and aging behavior of AlLi, Al-Li-Cu and Al-Li-Mg alloys under different equivalent strains (ε ) were investigated. Following solid-solution treatment, high-pressure torsion (HPT), asymmetric rolling (ASR) and cold rolling (CR
Externí odkaz:
https://doaj.org/article/5b8e9fcf8f1f4dd7b1eb30278f6cf949
Autor:
Miloš Matvija, Martin Fujda, Ondrej Milkovič, Marek Vojtko, Róbert Kočiško, Miroslav Glogovský
Publikováno v:
Advances in Materials Science and Engineering, Vol 2018 (2018)
The changes in the microstructure and improvement in the mechanical properties of as-cast AlSi7MgCu0.5 alloy induced by the heat treatment and technique of equal channel angular pressing (ECAP) were investigated. The heat treatment of as-cast alloy p
Externí odkaz:
https://doaj.org/article/77f8cbe63eca4c698c2feadfddd4cac2
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
Publikováno v:
Acta Metallurgica Slovaca, Vol 21, Iss 3 (2015)
The experimental and theoretical investigation deals with laser welding of automotive thin steel sheets. As tested materials were used Interstitial Free Steel (IF) from type of Hight Strength Low Alloy (HSLA) and the second is S420 steel (Micro-Alloy
Externí odkaz:
https://doaj.org/article/5f2620bbb6d94047a8b3dc48e2ffcfff