05-12-2013 дата публикации
Номер: US20130323113A1
The invention relates to a nickel-chromium-aluminum-iron alloy, comprising (in wt %) 12 to 28% chromium, 1.8 to 3.0% aluminum, 1.0 to 15% iron, 0.01 to 0.5% silicon, 0.005 to 0.5% manganese, 0.01 to 0.20% yttrium, 0.02 to 0.60% titanium, 0.01 to 0.2% zirconium, 0.0002 to 0.05% magnesium, 0.0001 to 0.05% calcium, 0.03 to 0.11% carbon, 0.003 to 0.05% nitrogen, 0.0005 to 0.008% boron, 0.0001 to 0.010% oxygen, 0.001 to 0.030% phosphorus, max. 0.010% sulfur, max. 0.5% molybdenum, max. 0.5% tungsten, the remainder nickel and the common contaminants resulting from the process, wherein the following relations must be satisfied: 7.7C−x·a<1.0, wherein a=PN if PN>0 or a=0 if PN≦0. Here, x=(1.0 Ti+1.06 Zr)/(0.251 Ti+0.132 Zr), PN=0.251 Ti+0.132 Zr−0.857 N, and Ti, Zr, N, and C are the concentration of the respective element in mass percent. 1. Nickel-chromium-aluminum-iron alloy having (in wt.-%) 12 to 28% chromium , 1.8 to 3.0% aluminum , 1.0 to 15% iron , 0.01 to 0.5% silicon , 0.005 to 0.5% manganese , 0.01 to 0.20% yttrium , 0.02 to 0.60% titanium , 0.01 to 0.2% zirconium , 0.0002 to 0.05% magnesium , 0.0001 to 0.05% calcium , 0.03 to 0.11% carbon , 0.003 to 0.05% nitrogen , 0.0005 to 0.008% boron , 0.0001-0.1010% oxygen , 0.001 to 0.030% phosphorus , max. 0.010% sulfur , max. 0.5% molybdenum , max. 0.5% tungsten , remainder nickel and the usual process-related contaminants , wherein the following relationships must be fulfilled:{'br': None, 'i': 'x·a<', '0<7.7C−1.0\u2003\u2003(2)'}{'br': None, 'i': 'a=', 'with PN, if PN>0\u2003\u2003(3a)'}{'br': None, 'i': 'a=', 'or 0, if PN≦0\u2003\u2003(3b)'}{'br': None, 'i': 'x', 'and =(1.0Ti+1.06Zr)/(0.251Ti+0.132Zr)\u2003\u2003(3c)'}{'br': None, 'where PN=0.251Ti+0.132Zr−0.857N\u2003\u2003(4)'}and Ti, Zr, N, C are the concentration of the related elements in mass-%.2. Alloy according to claim 1 , having a chromium content of 16 to 28%.3. Alloy according to claim 1 , having a chromium content of 20 to 28%.4. Alloy according to claim 1 ...
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