Effect of intermediate annealing on microstructure and micro-hardness of the alloy obtained H20N80 after severe plastic deformation

L.R. Zubairov, V.A. Popov, V.N. Danilenko show affiliations and emails
Received 10 December 2012; Accepted 19 December 2012;
This paper is written in Russian
Citation: L.R. Zubairov, V.A. Popov, V.N. Danilenko. Effect of intermediate annealing on microstructure and micro-hardness of the alloy obtained H20N80 after severe plastic deformation. Lett. Mater., 2012, 2(4) 231-234
BibTex   https://doi.org/10.22226/2410-3535-2012-4-231-234


The effect of intermediate annealing during severe plastic deformation on evolution nanocrystalline structure and mi-crohardness of Ni-Cr alloy. It is shown that the microhardness saturates at strain correspondent to ten whole revolutions. Intermediate annealing nickel chromium alloy subjected to 5 revo-lution and consequent HPT for 10 revolution leads to increase of saturation level comparing to HPT Ni-Cr alloy strained for 15 whole revolutions microhardness increases above the saturation value. This result is apparently due to the increase in the length of equilibrium grain boundaries after annealing, which contribute to defect formation kinetics during subsequent deformation.

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