Hardening nickel / chromium / iron / titanium / aluminum alloy with good wear resistance, creep resistance, corrosion resistance, and workability

摘要

A hardenable wrought alloy of nickel, chrome, iron, titanium and aluminum with very good wear resistance and at the same time good creep resistance, good hot corrosion resistance and good workability. Alloy is by mass%, chromium more than 18% -31%, titanium 1.0-3.0%, aluminum 0.6-2.0%, iron more than 3.0-40%, carbon 0.005-0. 10%, nitrogen 0.0005 to 0.050%, phosphorus 0.0005 to 0.030%, sulfur max 0.010%, oxygen max 0.020%, silicon max 0.70%, manganese max 2.0% Magnesium up to 0.05%, calcium up to 0.05%, molybdenum up to 2.0%, tungsten up to 2.0%, niobium up to 0.5%, copper up to 0.5%, vanadium up to 0.5%, Co 0-15% as needed, as needed Zr0-0.20%, optionally containing 0.0001-0.008% boron, the balance being nickel and normal impurities resulting from the process, where the nickel content exceeds 35% Here, in order to obtain good wear resistance, the relational expression Cr + Fe + Co 25% (1) must be satisfied, and the relational expression fh 0 (2a) where fh = 6.49 + 3. 88Ti + 1.36Al-0.301Fe + (0.759-0.0209Co) Co-0.428Cr-28.2C (2) must be satisfied, which provides sufficient strength at high temperatures, where Where Ti, Al, Fe, Co, Cr, and C are mass% concentrations of the corresponding element, and fh is described in%.