SINGLE CRYSTAL NICKEL-BASED SUPERALLOY HAVING A LOW SPECIFIC GRAVITY, AND BLADE OF A TURBO MACHINE MADE FROM THIS SUPERALLOY

摘要

A low density nickel based superalloy having good creep characteristics when hot, and intended in particular for making turbomachine parts by monocrystalline solidification, wherein the composition of the alloy in percentages by weight is as follows: -Co: 5% to 7% Cr: 5% to 10% Mo: 0.5% to 2.5% -W: 3% to 5% Al: 6% to 7.5% Ti: 1.5% to 2.25% -Nb: 0% to 0.5% Ta: 2% to 4% V: 0.3% to 0.6% -Ni: balance to- 100%. - Parts, e.g. turbomachine blades, made from the alloy.