초록 ▼

A superalloy composition and single crystal articles of the composition are described. The broad range is 3-12% Cr, 0-3% Mo, 3-10% W, 0-5% Re, 6-12% Ta, 4-7% Al, 0-15% Co, 0-0.045% C, 0-0.02% B, 0-0.1% Zr, 0-0.8% Hf, 0-2% Nb, 0-1% V, 0-0.7% Ti, 0-10% (Ru+Rh+Pd+Os+Ir+Pt), balance essentially Ni. An e

A superalloy composition and single crystal articles of the composition are described. The broad range is 3-12% Cr, 0-3% Mo, 3-10% W, 0-5% Re, 6-12% Ta, 4-7% Al, 0-15% Co, 0-0.045% C, 0-0.02% B, 0-0.1% Zr, 0-0.8% Hf, 0-2% Nb, 0-1% V, 0-0.7% Ti, 0-10% (Ru+Rh+Pd+Os+Ir+Pt), balance essentially Ni. An equation is presented to select the most useful specific compositions from within this range. An exemplary preferred composition is 5.0% Cr, 10.0% Co, 2.0% Mo, 6.0% W, 3.1% Re, 5.6% Al, 9.0% Ta, 0.1% Hf, balance essentially Ni.

대표청구항 ▼

A high strength, heat treatable, stable nickel base superalloy composition particularly suited for fabrication of single crystal articles, consisting essentially of 3-12% Cr, 0-3% Mo, 3-10% W, 0-5% Re, 6-12% Ta, 4-7% Al, 0-15% Co, 0-0.02% B, 0-0.1% Zr, 0-0.045% C, 0-0.8% Hf, 0-2% Nb, 0-1% V, 0-0.7%

A high strength, heat treatable, stable nickel base superalloy composition particularly suited for fabrication of single crystal articles, consisting essentially of 3-12% Cr, 0-3% Mo, 3-10% W, 0-5% Re, 6-12% Ta, 4-7% Al, 0-15% Co, 0-0.02% B, 0-0.1% Zr, 0-0.045% C, 0-0.8% Hf, 0-2% Nb, 0-1% V, 0-0.7% Ti, 0-10% (Ru+Rh+Pd+Os+Ir+Pt), 0-0.1% Y, La, Sc, Ce, lanthanide or actinide series, balance Ni; said composition characterized in that where -200 Cr+80 Mo-20 Mo2-250 Ti2-50(TixTa)+15 Cb+200 W-14 W2+30 Ta-1.5 Ta2+2.5 Co+1200 Al-100 Al2+100 Re+1000 Hf-2000 Hf2+700 Hf3-2000 V-500 C-15000 B-500 Zr=P (where all elemental values are in weight percent), P is from about 3360 to about 4850.