发明名称 Low-Cost, High-Strength Fe-Ni-Cr Alloys for High Temperature Exhaust Valve Applications
摘要 An Fe—Ni—Cr alloy is composed essentially of, in terms of wt. %: 2.4 to 3.7 Al, up to 1.05 Co, 14.8 to 15.9 Cr, 25 to 36 Fe, up to 1.2 Hf, up to 4 Mn, up to 0.6 Mo, up to 2.2 Nb, up to 1.05 Ta, 1.9 to 3.6 Ti, up to 0.08 W, up to 0.03 Zr, 0.18 to 0.27 C, up to 0.0015 N, balance Ni, wherein, in terms of atomic percent: 8.5≦Al+Ti+Zr+Hf+Ta≦11.5, 0.53≦Al÷(Al+Ti+Zr+Hf+Ta)≦0.65, and 0.16≦Cr÷(Fe+Ni+Cr+Mn)≦0.21, the alloy being essentially free of Cu, Si, and V.
申请公布号 US2016090878(A1) 申请公布日期 2016.03.31
申请号 US201414497550 申请日期 2014.09.26
申请人 UT-Battelle, LLC 发明人 Muralidharan Govindarajan
分类号 F01L3/02;C22C30/00 主分类号 F01L3/02
代理机构 代理人
主权项 1. An Fe—Ni—Cr alloy consisting essentially of, in terms of wt. %: Al 2.4 to 3.7 Co up to 1.05 Cr 14.8 to 15.9 Fe 25 to 36 Hf up to 1.2 Mn up to 4 Mo up to 0.6 Nb up to 2.2 Ta up to 1.05 Ti 1.9 to 3.6 W up to 0.08 Zr up to 0.03 C 0.18 to 0.27 N up to 0.0015 balance Ni,wherein, in terms of atomic percent: 8.5≦Al+Ti+Zr+Hf+Ta≦11.5, 0.53≦Al÷(Al+Ti+Zr+Hf+Ta)≦0.65, and 0.16≦Cr÷(Fe+Ni+Cr+Mn)≦0.21, said alloy being essentially free of Cu, Si, and V.
地址 Oak Ridge TN US