Classifications

• • C—CHEMISTRY; METALLURGY
  • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
  • C22C—ALLOYS
  • C22C19/00—Alloys based on nickel or cobalt
  • C22C19/03—Alloys based on nickel or cobalt based on nickel
  • C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
  • C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
  • C22C19/057—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being less 10%

Definitions

• the present invention contemplates nickel-base alloys consisting essentially of elements as tabulated in percent by weight in Table I.
• Table II The alloys of Table II were cast into specimens and identically treated. The test specimens were subjected to various tests, the results of which are detailed in Tables III and IV. Table 111 contains results of tensile tests at room temperature.
• Table 1V contains results of creep-rupture tests conducted a 9856 a a at 1800 1400" F. and 1600" F.
• Tables III and IV show that the alloys of the present invention and particularly Example II, an alloy illustrative of the most advantageous embodiment of the present invention, are highly advantageous when compared to alloy A, the most nearly comparable alloy known heretofore.
• Example II retains all of the advantageous ductility char acteristics ofalloy A at room temperature and 1400 F. while adding thereto increased strength at other temperatures of engineering significance. From the data of Tables III and IV it is apparent that the alloys of the invention will be highly useful as structures in gas turbine engines and in other'usages where resistance to stress at high temperatures is essential.
• a nickel-base alloy useful at elevated temperatures under stress which consists essentially of in percent by weight about 8% chromium, about 10% cobalt, about 0.1% carbon, about 4% molybdenum, about 4.25% tantalum, about 6% aluminum, about 1% titanium, about 2% tungsten, about 1.5% hafnium, about 0.08% zirconium, about 0.015% boron with the balance being essentially nickel.
• a cast nickel-base alloy useful at elevated temperatures under stress which consistsessentially of in percent by weight about 7.5% toabout 8.5% chromium, about 9.5% 'to about 10.5% cobalt, about;,0.08%" to about 0.13% carbon, about 3% to'about-'6.5% molybdenum, about 4% to about 4.5% tantalum, about 5.75% to about 6.25% aluminum, about 0 .8% to about..1.2%- titanium, about 0.75% to about 3% tungsten, provided that the sum of the percent molybdenum plus the percent tungsten is about 5% to' about 7.5 about 0.8% to 5% hafnium, about 0.05% to about 0.5% zirconium, about 0.01% to about 0.02% boron with the balance being' essentially nickel.
• An alloy as in claim 3 which containsa'maximum of 3% hafnium and a total of percent aluminum plus percent titanium is about 7%; T

Landscapes

• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Materials Engineering (AREA)
• Mechanical Engineering (AREA)
• Metallurgy (AREA)
• Organic Chemistry (AREA)
• Manufacture And Refinement Of Metals (AREA)
• Forging (AREA)
• Turbine Rotor Nozzle Sealing (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=25371633

Family Applications (1)

Country Status (3)

Cited By (1)

Families Citing this family (1)

• 1969
  • 1969-11-19 US US878233A patent/US3677748A/en not_active Expired - Lifetime
• 1970
  • 1970-11-17 GB GB5455470A patent/GB1332710A/en not_active Expired
  • 1970-11-19 DE DE19702056950 patent/DE2056950A1/de active Pending

Also Published As

Similar Documents