METHOD OF MANUFACTURE OF THE FLAT SHAPE MADE OUT OF THE ZIRCONIUM-NIOBIUM ALLOYS Russian patent published in 2007 - IPC C22F1/18 B21J1/04 

FIELD: metallurgy industry; methods of manufacture of the flat shape made out of the binary zirconium-niobium alloys.

SUBSTANCE: the invention is pertaining to the field of metallurgy, in particular, to the metal forming and may be used at manufacture of the flat shape applied in the capacity of the structural material for the active zones of the atomic reactors. The ingot made out of the binary zirconium-niobium alloy is expose to forging for production of the blank. The forging is exercised in two stages. At the first stage the forging is conducted with heating in the temperature range of existence of β-zirconium. At the second stage the forging is conducted in the upper part of the temperature range of existence of(α+ β)-zirconium at the temperature of not less than 800°С with the reduction rate of the cross-sectional area of no less than 1.3. Then exercise the hot rolling of the workpiece blank ands its cold rolling with the thermal treatments. As a result the invention ensures production of the flat shape with the improved operational properties and the smaller amount of the spoilage under the regulated characteristics.

EFFECT: the invention ensures production of the flat shape with the improved operational properties and the smaller amount of the spoilage under the regulated characteristics.

1 dwg, 1 tbl