Zobrazeno 1 - 10
of 229
pro vyhledávání: '"H., Dyja"'
Publikováno v:
Metalurgija, Vol 59, Iss 1, Pp 39-42 (2020)
The article reports the results of investigation into variations in the rheological properties of the Zr-1 % Nb alloy when deformed under the conditions of physical modelling of the process of multi-stage hot open die forging of ingots. The programme
Externí odkaz:
https://doaj.org/article/215a48d931b14777adbbbd856f7f6cb4
Publikováno v:
Archives of Metallurgy and Materials, Vol vol. 64, Iss No 2, Pp 797-803 (2019)
The article reports the results of research on the influence of the alternate intermittent deformation of specimens by a torsion method on the Bauschinger effect in the Zr-1%Nb zirconium-based alloy. Tests were carried out using an STD 812 torsion pl
Externí odkaz:
https://doaj.org/article/1c31a373a7b74b64b8c1b820ef86dad2
Publikováno v:
Archives of Metallurgy and Materials, Vol vol. 63, Iss No 3, Pp 1083-1086 (2018)
The study proposed the model of “guide mark” defects formation on the internal surface of pipes, produced on PRM mills of PRP – 140. The research of pipe forming at plug rolling mill with stub mandrel has been carried out; regularities of the d
Externí odkaz:
https://doaj.org/article/32bc04eb476d43d0a2487fa20c7ac094
Autor:
A. B. Naizabekov, S. N. Lezhnev, H. Dyja, T. Bajor, K.Tsay, A. Arbuz, N. Gusseynov, R. Nemkaeva
Publikováno v:
Metalurgija, Vol 56, Iss 1-2, Pp 199-202 (2017)
The cross rolling is the one of most perspective method of refinement microstructure metals by severe plastic deformation method. This method gives ability to get the long length billets. However, deformation and trajectories of the metal is very het
Externí odkaz:
https://doaj.org/article/d3929b4f3e754de6a40c91122f73eae3
Publikováno v:
Metalurgija, Vol 55, Iss 4, Pp 643-646 (2016)
The paper analyzes the high-temperature plasticity characteristics of 20MnB4 and 30MnB4 with micro-additives, intended for cold upsetting and high-carbon steels C45 and C70 in the “solid phase-liquid” during heating and cooling. The investigation
Externí odkaz:
https://doaj.org/article/1cc68a3d2a384d288a8e203803d6d902
Publikováno v:
Metalurgija, Vol 55, Iss 4, Pp 635-638 (2016)
This study presents results of the examinations aimed at determination of rheological properties of selected grades of medium and high-carbon steel grades ( C45 and C72D). The examinations were carried out for the hot torsion test using STD 812 torsi
Externí odkaz:
https://doaj.org/article/96d75663105a4686b18bcbbb63ef4666
Publikováno v:
Metalurgija, Vol 55, Iss 3, Pp 461-464 (2016)
The objective of research was to determine the weldability, using Tungsten Inert Gas (TIG) of extruded sections made of hard-deformable 5xxx series aluminum alloys with differing magnesium content, i.e. AlMg3, AlMg4,5, AlMg5, AlMg7. Welded joints wer
Externí odkaz:
https://doaj.org/article/c1ccf2bceb7942058435a73fa17897f7
Publikováno v:
Archives of Metallurgy and Materials, Vol vol. 63, Iss No 2 (2018)
This research work is devoted to the theoretical study of the pipe calibration on a mandrel. The aim of the study is to improve the precision of the calibrated pipes. As the paper shows, it is advisable to apply different methods of research dependin
Externí odkaz:
https://doaj.org/article/1afe905f7f724295bb460a39c4e95041
Publikováno v:
Metalurgija, Vol 54, Iss 2, Pp 415-418 (2015)
The commercial technology of rolling 5,5 mm-diameter wire rod in Poland’s most modern rolling line has been examined within the study. The material used for the investigation was the 20MnB4 steel intended for subsequent cold working. From the perfo
Externí odkaz:
https://doaj.org/article/42628f280df6496fb94fba90554a8324
Publikováno v:
Metalurgija, Vol 55, Iss 4, Pp 772-774 (2016)
The work presents the results of numerical investigations of AZ31 magnesium alloy bars obtaining by the rolling process in a three high skew rolling mill. An analysis of impact the magnitude of inflicted deformation on temperature distribution in the
Externí odkaz:
https://doaj.org/article/9c9590e9119e4d7b8f45009539a1f400