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1.发明授权Method for making a nickel base alloy having improved resistance to hydrogen embittlement 失效制造具有改善的耐氢脆性的镍基合金的方法
公开(公告)号：US5788785A
公开(公告)日：1998-08-04
申请号：US745409
申请日：1996-11-08
CPC分类号： C22F1/10 , C22C19/055 , C22C19/056 , C22C19/057 , C22C19/058 , Y10S60/909
摘要： The present invention relates to a method for making a gamma prime precipitation strengthened nickel base alloy having an improved resistance to hydrogen embrittlement, particularly crack propagation. The alloy is cast, heat treated to dissolve substantially all the gamma-gamma prime eutectic islands and script carbides without causing incipient melting, cooled to below 1000.degree. C., HIP'ed to eliminate porosity, precipitation treated and aged. The alloy has a microstructure which is essentially free of script carbides, gamma-gamma prime eutectic islands and porosity. The microstructure further includes a plurality of regularly occurring large barrier gamma prime precipitates and a continuous field of fine cuboidal gamma prime precipitates surrounding the large barrier gamma prime precipitates.
摘要翻译： 本发明涉及一种具有改善的耐氢脆性，特别是裂纹扩展的γ'析出强化镍基合金的方法。 该合金被铸造，热处理以溶解基本上所有的γ-γ初始共晶岛和脚本碳化物，而不会引起初始熔化，冷却至低于1000℃，HIP以消除孔隙率，沉淀处理和老化。 该合金具有基本上没有脚本碳化物，γ-γ初始共晶岛和孔隙率的微结构。 微结构进一步包括多个规则存在的大阻挡γ原子沉淀物和围绕大阻挡γ'析出物的细长方体γ'沉淀物的连续场。
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2.发明授权Nickel base superalloy articles with improved resistance to crack propagation 失效镍基超合金制品具有改善的抗裂纹扩展能力
公开(公告)号：US5725692A
公开(公告)日：1998-03-10
申请号：US537341
申请日：1995-10-02
CPC分类号： C22F1/10 , C22C19/055 , C22C19/056 , C22C19/057 , C22C19/058 , Y10S60/909
摘要： The present invention relates to a heat treated, gamma prime precipitation strengthened nickel base alloy having an improved resistance to hydrogen embrittlement, particularly crack propagation. The alloy has a microstructure which is essentially free of script carbides, gamma--gamma prime eutectic islands and porosity. The microstructure further includes a plurality of regularly occurring large barrier gamma prime precipitates and a continuous field of fine cuboidal gamma prime precipitates surrounding the large barrier gamma prime precipitates.
摘要翻译： 本发明涉及具有改善的耐氢脆性，特别是裂纹扩展的经热处理的γ'析出强化镍基合金。 该合金具有基本上没有脚本碳化物，γ-γ初始共晶岛和孔隙率的微结构。 微结构进一步包括多个规则存在的大阻挡γ原子沉淀物和围绕大阻挡γ'析出物的细长方体γ'沉淀物的连续场。
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公开(公告)号：US4818833A
公开(公告)日：1989-04-04
申请号：US135955
申请日：1987-12-21
CPC分类号： F01D11/12 , C21D9/0025
摘要： An abrasive, wear resistant layer is applied to the tip surface of a superalloy gas turbine blade by high temperature sintering operation which produces a high strength bond between the layer and the blade, minimizes gamma prime phase growth, and prevents recrystallization in the blade. Important features of the invention include the use of an inductively heated graphite susceptor to heat the blade, and a refractory metal shield which surrounds the airfoil and root portions of the blade while leaving the tip portion exposed to the heat source.
摘要翻译： 通过高温烧结操作将耐磨耐磨层施加到超合金燃气轮机叶片的尖端表面上，其在层和叶片之间产生高强度的结合，使γ相的生长最小化，并防止叶片中的再结晶。 本发明的重要特征包括使用感应加热的石墨基座来加热叶片，以及耐火金属屏蔽件，其围绕叶片的翼型和根部，同时使尖端部分暴露于热源。
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4.发明授权Nickel base superalloy columnar grain and equiaxed materials with improved performance in hydrogen and air 失效镍基超级合金柱状晶粒和等离子体材料，在氢气和空气中具有改进的性能
公开(公告)号：US5820700A
公开(公告)日：1998-10-13
申请号：US539091
申请日：1995-10-04
CPC分类号： C22F1/10 , C22C19/057 , Y10S60/909
摘要： A nickel base superalloy, having either columnar or equiaxed grain structure, which has significantly improved resistance to hydrogen embrittlement, and to fatigue in air is disclosed. The superalloy consists essentially of, in weight percent, about 0.006-0.17 carbon, about 6.0-22.0 chromium, up to about 17.0 cobalt, up to about 9.0 molybdenum, up to about 12.5 tungsten, up to about 5.0 titanium, up to about 6.7 aluminum, up to about 4.5 tantalum, up to about 2.5 hafnium, up to about 18.5 iron, up to about 3.25 rhenium, up to about 1.25 columbium, remainder nickel. The microstructure of the superalloy consists essentially of a plurality of fine, discrete carbide particles, .gamma.' precipitates in a .gamma. matrix, and is essentially free of script carbides, .gamma./.gamma.' eutectic islands and porosity.
摘要翻译： 公开了具有柱状或等轴晶粒结构的镍基超级合金，其具有显着改善的耐氢脆性和空气疲劳。 超合金基本上由重量百分比计，约0.006-0.17碳，约6.0-22.0铬，至多约17.0钴，至多约9.0钼，至多约12.5钨，至多约5.0钛，至多6.7 铝，高达约4.5钽，至多约2.5铪，至多约18.5铁，至多约3.25铼，至多约1.25铌，剩余镍。 超合金的显微组织基本上由多个细小的离散碳化物颗粒，γ基质中的γ'析出物组成，并且基本上没有脚本碳化物，γ/γ'共晶岛和孔隙。
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5.发明授权
公开(公告)号：US5976280A
公开(公告)日：1999-11-02
申请号：US759495
申请日：1996-12-04
CPC分类号： C22F1/10 , C22C19/057 , Y10S60/909
摘要： A nickel base superalloy, having either columnar or equiaxed grain structure, which has significantly improved resistance to hydrogen embrittlement, and to fatigue in air. The material is processed so as to be essentially free of script type carbides, .gamma./.gamma.' eutectic islands and porosity. The processing includes heat treating above the .gamma.' solvus temperature to solution the script type carbides and eutectic islands, followed by HIP to eliminate the porosity.
摘要翻译： 具有柱状或等轴晶粒结构的镍基超级合金，其具有显着改善的耐氢脆性和空气疲劳。 该材料被加工成基本上没有脚印型碳化物，γ/γ'共晶岛和多孔性。 该处理包括在γ'solvus温度以上的热处理以解决脚本型碳化物和共晶岛，随后用HIP消除孔隙率。
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6.发明授权Nickel base superalloy single crystal articles with improved performance in air and hydrogen 失效镍基超合金单晶制品在空气和氢气中性能提高公开(公告)号：US06355117B1
公开(公告)日：2002-03-12
申请号：US09516677
申请日：2000-03-01
申请人： Daniel P. DeLuca , Bradford A. Cowles , Maurice L. Gell , David N. Duhl , Alan D. Cetel , Charles M. Biondo
发明人： Daniel P. DeLuca , Bradford A. Cowles , Maurice L. Gell , David N. Duhl , Alan D. Cetel , Charles M. Biondo
IPC分类号： C22C1905
CPC分类号： C22C19/057 , C22C19/056
摘要： Compositional requirements and processing improvements are disclosed which improve the hydrogen embrittlement resistance and the fatigue resistance in air of nickel base single crystal articles. The compositional requirements enlarge the difference between the &ggr;′ solvus temperature and the incipient melting temperature, thus enabling the solution of &ggr;/&ggr;′ eutectic islands without causing incipient melting, while hot isostatic pressing and careful melt practice eliminate porosity and carbides, borides and nitrides, all of which act as crack initiation sites.
摘要翻译： 公开了提高镍基单晶制品的耐氢脆性和耐疲劳性的组成要求和加工改进。 组成要求扩大了伽马'溶剂温度和初始熔融温度之间的差异，从而使γ/γ共晶岛的溶液不会引起初始熔化，而热等静压和精心的熔融实践消除了孔隙度和碳化物，硼化物和氮化物 所有这些都作为裂缝发生点。
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公开(公告)号：US07115175B2
公开(公告)日：2006-10-03
申请号：US10893849
申请日：2004-07-19
CPC分类号： C22F1/10 , C22C19/056 , C22C19/057
摘要： The present invention relates to an improved single crystal nickel base superalloy and a process for making same. The single crystal nickel base superalloy has a composition comprising 3 to 12 wt % chromium, up to 3 wt % molybdenum, 3 to 10 wt % tungsten, up to 5 wt % rhenium, 6 to 12 wt % tantalum, 4 to 7 wt % aluminum, up to 15 wt % cobalt, up to 0.05 wt % carbon, up to 0.02 wt % boron, up to 0.1 wt % zirconium, up to 0.8 wt % hafnium, up to 2.0 wt % niobium, up to 1.0 wt % vanadium, up to 0.7 wt % titanium, up to 10 wt % of at least one element selected from the group consisting of ruthenium, rhodium, palladium, osmium, iridium, platinum, and mixtures thereof, and the balance essentially nickel. The single crystal nickel base superalloy has a microstructure which is pore-free and eutectic γ–γ′ free and which has a gamma prime morphology with a bimodal γ′ distribution.
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公开(公告)号：US5783318A
公开(公告)日：1998-07-21
申请号：US486233
申请日：1995-06-07
IPC分类号： B23P6/00 , B23K10/02 , B23K26/00 , B23K26/34 , B23K35/30 , C22C19/03 , C22C19/05 , B32B15/00
CPC分类号： B23K35/3033 , C22C19/057 , Y10T428/12646 , Y10T428/12944
摘要： A repaired nickel-based superalloy substrate that has applied thereon a nickel-based polycrystalline repair alloy comprising 0.03-2.5 weight % hafnium, 0.003-0.32% boron, 0.02-0.16% yttrium and 0.007-0.35% zirconium. The present invention further provides a repaired single crystal alloy substrate that has applied thereon a repair alloy wherein the repair alloy's composition is similar to or the same as the single crystal alloy composition except that the repair alloy additionally comprises at least one grain boundary strengthener element and at least one element that enhances oxidation resistance.
摘要翻译： 在其上涂覆有镍基多晶修补合金的镍基超级合金基底，该镍基多晶修复合金包含0.03-2.5重量％的铪，0.003-0.32％的硼，0.02-0.16％的钇和0.007-0.35％的锆。 本发明还提供一种已修复的单晶合金基板，其上施加有修补合金，其中修补合金的组成与单晶合金组合物相似或相同，除了修补合金另外包括至少一个晶界强化元件和 至少一种提高抗氧化性的元素。
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9.发明授权
公开(公告)号：US5302217A
公开(公告)日：1994-04-12
申请号：US995438
申请日：1992-12-23
摘要： Superalloy castings having large variations in section thickness are heat treated using a cyclic stress relief procedure, with the temperature being cycled between about 50.degree. F. (28.degree. C.) and 150.degree. F. (83.degree. C.) below the second phase particle solvus temperature, to relieve the residual stresses incurred during cooling within the mold following casting, followed by a solution cycle at a temperature about 25.degree. F. (14.degree. C.) below the second phase particle solvus temperature to dissolve some or all of the second phase particles.
摘要翻译： 使用循环应力消除程序对具有较大截面厚度变化的超合金铸件进行热处理，其温度在第二阶段以下的约50华氏度（28摄氏度）和150度（83度）之间循环 颗粒溶解温度，以减轻浇铸后模具内的冷却过程中产生的残余应力，然后在低于第二相颗粒溶解温度的约25华氏度（14℃）下的溶液循环，以溶解部分或全部 第二相颗粒。
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