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NICKEL-BASE ALLOY SHEET ALLOYS USED IN AEROSPACE APPLICATIONS

J.H. Tundermann(Inco Alloys International , Inc. , Huntington , WV 25705 , USA Manuscript received 26 August 1996)

金属学报(英文版)

Many gas turbine components are made from nickel alloy sheet. Most are used for directing or containing gases at high temperatures and pressures where metal temperatures can be as high as 1090℃ (2000°F). These applications included combustor systems, casings and liners, transition and exhaust ducting, afterburners, and thrust reversere. Light weight components and sub-assemblies call for alloy sheet with high levels of stength and oxidation resistance. Complex component design calls for excellent ductility and ease of fabrication.The wide range of nickel alloy sheet alloys presently used in aircraft and land-based gas turbines is briefly described and typical properties presented. New sheet alloy developments, involving INCONEL~* alloys 625LCF, 718SPF and MA754, are presented including the process routes involved and material properties.

关键词: :aerospace , null , null , null , null , null , null , null , null

INCONEL 718(GH4169)高温合金的发展与工艺

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材料工程 doi:10.3969/j.issn.1001-4381.2012.08.020

INCONEL 718合金(IN718)自从20世纪60年代初在美国的INCO Huntington Alloys(现为Special Metals Co.)被发明并应用于涡轮零部件制造后,已成为航空发动机历史上应用最为广泛的镍基高温合金材料.现代飞机发动机上超过30%(质量分数)的关键零部件由718合金制成.本文回顾了718合金在航空发动机上的应用历史,对该合金的基本力学性能、高温稳定性,以及目前国外应用的铸、锻制造工艺现状做了综述.对国外正在研究的新型IN718衍生替代合金的发展现状进行了介绍.

关键词: INCONEL 718 , 镍基合金 , 718Plus , 航空发动机

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