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Theoretical-Experimental Analysis of the Workability of the Ni50Cr45N0.6 alloy

Łukaszek-Sołek A., Świątoniowski A., Celadyn K., Sińczak J.

Archives of Metallurgy and Materials

2017

Vol. 62, iss. 1

59--65

In this paper, the results of investigations into, and of the analyses of, the hot deformation behaviour of the Ni50Cr45N0.6 alloy were presented. Compression tests were conducted on a Gleeble 3800 thermo-mechanical simulator within the following temperatures range 850-1200°C and within that of the strain rate 1-40 s-1 to the constant true strain of 0.9, for the purpose of fulfilling the objective of obtaining experimental stress date. Those data were taken advantage of for the purpose of calculating the workability parameters, and that means the efficiency of power dissipation η, the flow instability ξ and the strain rate sensitivity m. The processing maps based upon Murty’s criterion were drawn up for the following true strain range: 0.2-0.9, and, subsequently, both processing windows and the flow instability areas were determined. For the alloy being analysed, the most advantageous conditions of metal forming were ascertained within the following range of temperatures: 950-1000°C, and for that of the strain rate amounting to 10-40 s-1, and that because of (occurring at the temperature of 950°C) the peak of the efficiency of power dissipation parameter η, amounting to 22% (in accordance with Murty’s criterion). The flow instability areas identified on the processing maps ought to be avoided in metal forming processes. Experimental rolling tests were also conducted.

Kucie broni białej ze stali damasceńskiej

Celadyn K., Sińczak J., Bednarek S., Łukaszek-Sołek A.

Hutnik, Wiadomości Hutnicze

2010

Vol. 77, nr 12

715-720

Celem opracowania jest przybliżenie czytelnikom zagadnień związanych z wytwarzaniem broni ze stali damasceńskiej, którą charakteryzuje ostra krawędź tnąca przy zachowaniu sprężystości głowni oraz reliefy z naprzemian ułożonych jasnych i ciemnych pasm na klindze. Na potrzeby dwóch prac dyplomowych oraz niniejszego opracowania, pan Krzysztof Panas – znany w Polsce wytwórca broni białej – wykuł nożyk wg technologii stosowanej do wytwarzania tzw. damastów. Ostrze nożyka poddano badaniom mikrostruktury i mikotwardości.

The main reason of this paper is to show matters regarding manufacture damascen weapons. This weapon can be characterized by the sharp cutting edge with the elasticity of blade and the pattern made from light and dark strip lying one on the other on the blade. For the use of two Master’s theses and as well for this paper, mister Krzysztof Panas (well known polish bladesmith) made small knife with the technology used for making damascene steel. The edge of the knife was used for microstructure and microhardness examination.