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
  • C22C19/007—Alloys based on nickel or cobalt with a light metal (alkali metal Li, Na, K, Rb, Cs; earth alkali metal Be, Mg, Ca, Sr, Ba, Al Ga, Ge, Ti) or B, Si, Zr, Hf, Sc, Y, lanthanides, actinides, as the next major constituent

Definitions

• An intermetallic compound material which may be produced by standard vacuum melting techniques, comprises two principal groups of constituents of which a first group includes nickel and at least one of the elements chromium, cobalt, molybdenum and tungsten within the range 72 to 83 atomic per cent, and the second group includes aluminium in combination with at least one of the elements titanium, niobium and tantalum, the material containing the constituents in the proportions, by atomic percentage,
• first group of constituents 72 to 83 second group of constituents 17 to 28 One preferred composition of the intermetallic compound material contains elements of the said first and second groups in the following ranges specified below, in atomic per cent,
• the intermetallic compound material may contain carbon, boron, and zirconium as trace elements.
• This invention relates to intermetallic compound ma- 2 melt is fully degassed. chromium and any refractory metals are added under partial pressure of argon. Aluminum, titanium and zirconium are then added under vacuum and the metal cast into ingot form. Conterials and in particular to metal alloys having a base of 5 vcntional casting techniques have produced materials tri-nickel aluminide (Ni Al). having acceptable high temperature strengths and due- The majority of high temperature structural compotilities.
• An intermetallic compound material according to the g/ with a Similar melting Point to V197- Its tensile invention comprises two principal groups of constitund ep/ pture prop rties are Shown in Tables V ents of which one group includes nickel and one or and VI respectlvelymore of the elements chromium, cobalt, molybdenum TABLE 1] and tungsten within the range 72 to 83 atomic per cent, T V197 and the second group includes aluminium and one or properties ijnidirecfionany more of the elements titanium, n1ob1um and tantalum Test conventionally cast solidified temper- UTS (tsi) 71 elong- UTS (tsi) "/1 elongw1th1n the range 17 to 2 8 atomlc per cent.
• const1tuents are m the followmg 20C 50 3 56 7 ranges (spec1fied 1n atom1c per cent).
• Unidirectionally cast solidified Additional trace elements are 0.05 to 0.5 carbon, st nditions ife I liife q i 0.01 to 0.1 boron, and 0.01 to 0.2 zirconium (all i r) e r) ic cenm es 19 151 900C 37 27 atom g d t l I din to the 8 mi 1000C 17 8 50 65 lntermeta 1c compoun ma er1a s accor g 2 Si 50C
• An intermetallic compound material composed of in atomic percent. about 64.7 nickel. 3.7 chromium. 6.9 cobalt, 1.3 molybdenum. 17.2 aluminum, 5.9 titanium, 0.2 carbon. 0.05 boron, and 0.05 zirconium.
• An intermctallic compound material composed of in atomic percent, about 64.2 nickel. 3.3 chromium. 7.1 cobalt, 0.8 molybdenum. 0.4 tungsten, 19.0 aluminum, 2.3 titanium, l.3 niobium, 1.3 tantalum, 0.2 carbon, 0.05 boron, and 0.05 zirconium.
• An intermetallic compound material composed of in atomic percent, about 62.8 nickel, 3.2 chromium, 7.3 cobalt. 0.7 molybdenum, 0.4 tungsten, 20.2 aluminum, 1.1 titanium, 2.1 niobium, 1.9 tantalum, 0.2 carbon, 0.05 boron. and 0.05 zirconium.
• An intermetallic compound material composed of in atomic percent, about 64.5 nickel, 3.4 chromium, 7.2 cobalt, 0.7 molybdenum, 0.5 tungsten, 18.0 aluminum, 3.7 titanium, 0.8 niobium, 0.9 tantalum, 0.2 carbon, 0.05 boron, and 0.05 zirconium.
• An intermetallic compound material composed of in atomic percent, about 61.5 nickel, 5.1 chromium, 7.9 cobalt, 1.8 tungsten, 19.9 aluminum, 3.5 tantalum, 02 carbon, 0.05 boron, and 0.05 zirconium.
• An intermetallic compound material composed of in atomic percent, about 62.9 nickel, 2.8 chromium, 6.5 cobalt, 1.0 molybdenum, 21.1 aluminum, 5.4 tantalum, 0.2 carbon, 0.05 boron, and 0.05 zirconium.
• An intermetallic compound material composed of in atomic percent, about 64.8 nickel. 3.2 chromium, 6.8 cobalt, l.l molybdenum, 19.0 aluminum, 4.8 niobium 0.2 carbon, 0.05 boron, and 0.05 zirconium.
• An intermctallic compound material composed of in atomic percent, about 60.7 nickel, 4.0 chromium, 10.5 cobalt, 0.1 molybdenum, 13.7 aluminum, 10.7 titanium, 0.2 carbon. 0.05 boron, and 0.05 zirconium.
• An intermetallic compound material composed of in atomic percent, about 71.6 nickel, 4.0 chromium, l.l molybdenum, 18.9 aluminum, 2.l titanium, 2.0 niobium, 0.2 carbon, 0.05 boron, and 0.05 zirconium.
• An intermctallic compound material composed of in atomic percent, about 64.6 nickel, 3.9 chromium, 7.1 cobalt, 1.0 tungsten, 19.5 aluminum, 3.6 tantalum,

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• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Materials Engineering (AREA)
• Mechanical Engineering (AREA)
• Metallurgy (AREA)
• Organic Chemistry (AREA)
• Powder Metallurgy (AREA)
• Manufacture Of Alloys Or Alloy Compounds (AREA)
• Turbine Rotor Nozzle Sealing (AREA)

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Cited By (14)

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Citations (4)

• 1971
  • 1971-05-26 GB GB1715071A patent/GB1381859A/en not_active Expired
• 1972
  • 1972-05-23 US US256026A patent/US3902900A/en not_active Expired - Lifetime
  • 1972-05-24 DE DE19722225280 patent/DE2225280A1/de not_active Withdrawn
  • 1972-05-25 FR FR727218764A patent/FR2139080B1/fr not_active Expired
  • 1972-05-25 IT IT50493/72A patent/IT958061B/it active
  • 1972-05-26 JP JP5240872A patent/JPS5549144B1/ja active Pending

Patent Citations (4)

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