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  4. № 15 2008
  5. P. 70

Dispersion strengthening of Zr-Cr alloys

S.Firstov,
 
M.Brodnikovskyy,
 
J.Zubets,
 
N.Krapivka,
 
G.Sarzhan,
 
A.Samelyuk,
 
N.Bega,
 
H.Rokitskaya,
 
D.А. Bakhonskiy
 

I. M. Frantsevich Institute for Problems of Materials Science of the NAS of Ukraine, Omeliana Pritsaka str.,3, Kyiv, 03142, Ukraine
Electron Microscopy and Strength of Materials - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2008, #15
http://www.materials.kiev.ua/article/323

Abstract

Influence of composition, heat treatment and deformation on the dispersion strengthening of Zr-Cr alloys was studied. Effectiveness of strengthening by particles of α-phase in hypereutectoid alloys and ZrCr2 in eutectoid alloys was compared. It is set, high sensitiveness of the strength at 800 oC to the regime of thermal treatment. The change of cooling speed within the limits of 1-130 hail./с changes strength at 800оC in 2-2,5 times.. It is shown that presence of needle-shaped particles of intermetallid, diameter of 60 nm and length of 500 nm, formed at eutectoid transformation facilitates the process of cell formation during deformation in α-regain


COMPOSITION, DEFORMATION, DISPERSION STRENGTHENING, INTERMETALLID, MICROSTRUCTURE, STRENGTH

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