METHOD OF PLATE WORKPIECE RECEIVING FROM ZIRCONIUM ALLOY, RECEIVED BY THIS METHOD PLATE WORKPIECE AND THE ELEMENT OF FUEL ASSEMBLY OF NUCLEAR REACTOR OF NUCLEAR POWER PLANT, MADE OF PLATE WORKPIECE

摘要

FIELD: metallurgy, processes.;SUBSTANCE: invention can be used for manufacturing of elements of fuel assembly of nuclear power plant - body or reactor lattice on boiling water, and also reactor lattice with water under the pressure, received from zirconium alloy, consisting not less then 95 wt % of zirconium. Plate work piece made of zirconium alloy is hardened in -area with receiving of acicular structure receiving, rolling with route without intermediate softening at temperature from room till 200C and reduction ratio 2-20% and annealed in - or +- area at temperature 500-800C during from 2 minutes till 10 hours. Cooling rate while tempering in -area is no less than 1C/s.;EFFECT: blanks allows at the same time well mechanical properties and low ability to increase dimensions under irradiation.;17 cl, 4 tbl, 6 dwg