To-fase titanaluminidlegering

• Main Authors: DEEVI SEETHARAMA C, LIU C T
• Format: Patent
• Language: Norwegian
• Published: 22.07.2013
• Subjects: ALLOYS; CASTING; CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; METALLURGY; PERFORMING OPERATIONS; POWDER METALLURGY; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WORKING METALLIC POWDER

En to-fase titanaluminidlegering som haren lamellær mikrostruktur med lite mellomkolonistrukturer. Legeringen kan inkludere fine partikler slik som boridpartikler ved kolonigrensene og/eller likeaksede korngrensestrukturer. Legeringen kan inkludere legeringstilsetninger slik som < 10 atom% W, Nb og/eller Mo. Legeringen kan være fri for Cr, V, Mn, Cu og/eller Ni og kan inkludere, i atom%, 45-55 % Ti, 40-50 % Al, 1-5 % Nb, 0,3-2 % W, opptil l % Mo og 0,1-0,3 % B. I vekt% kan legeringen inkludere 57-60 % Ti, 30-32 % Al, 4-9 % Nb, opptil 2 % Mo, 2-8 % W og 0,02-0,08 % B. A two phase titanium aluminide alloy having a lamellar microstructure with little intercolony structures. The alloy can include fine particles such as boride particles at colony boundaries and/or grain boundary equiaxed structures. The alloy can include alloying additions such as </= 10 at % W, Nb and/or Mo. The alloy can be free of Cr, V, Mn, Cu and/or Ni and can include, in atomic %, 45 to 55 % Ti, 40 to 50 % Al, 1 to 5 % Nb, 0.3 to 2 % W, up to 1 % Mo and 0.1 to 0.3 % B. In weight %, the alloy can include 57 to 60 % Ti, 30 to 32 % Al, 4 to 9 % Nb, up to 2 % Mo, 2 to 8 % W and 0.02 to 0.08 % B.