Izvorni znanstveni članak

Physical modelling of the plastic working processes of modified Zr-Nb zirconium alloy bars and tubes

A. Kawałek ; Czestochowa University of Technology, Faculty of materials processing technology and applied physics, Czestochowa, Poland
H. Dyja ; Czestochowa University of Technology, Faculty of materials processing technology and applied physics, Czestochowa, Poland
A. M. Galkin ; Czestochowa University of Technology, Faculty of materials processing technology and applied physics, Czestochowa, Poland
K. V. Ozhmegov ; Czestochowa University of Technology, Faculty of materials processing technology and applied physics, Czestochowa, Poland
M. Knapiński ; Czestochowa University of Technology, Faculty of materials processing technology and applied physics, Czestochowa, Poland

Sažetak

The article presents the results of physical modelling of the processes of plastic working of the modified Zr - 1%Nb (Zr – 1,0 % Nb – 0,7 % Fe – 0,9 % O) zirconium alloy, obtained using different methods of plastometric testing. The ≪Gleeble 3800≫ metallurgical process simulator, a DIL805 A/D dilatometer with a plastometric attachment, and a ≪Setaram≫ plastometer were used for the tests. Based on the obtained testing results, the values of the yield stress and limiting plasticity of the alloy were determined for wide ranges of temperature variation (Т = 20 - 950 °С) and strain rate variation (έ= 0,1 – 15,0 s-1) under continuous loading conditions. It was found that by using different testing methods, different alloy properties, characteristic of a given plastic working process, could be obtained.

Ključne riječi

Zr - 1%Nb; rods; tube; physical modeling; hot; warm; cold deformation

Hrčak ID:

126679

URI

https://hrcak.srce.hr/126679

Datum izdavanja:

1.1.2015.

Posjeta: 1.531 *