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公开(公告)号：US4842652A
公开(公告)日：1989-06-27
申请号：US122865
申请日：1987-11-19
CPC分类号： C22F1/186 , F02B2075/027
摘要： Processing of Ti-6246 for improved mechanical properties including fracture toughness and low cycle fatigue. The process includes beta forging, sub beta transus solutionizing, controlled cooling and precipitation treating.
摘要翻译： Ti-6246的加工改善机械性能，包括断裂韧性和低循环疲劳。 该过程包括β锻造，次β转化溶液，控制冷却和沉淀处理。
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公开(公告)号：US4716020A
公开(公告)日：1987-12-29
申请号：US424668
申请日：1982-09-27
IPC分类号： C22C14/00
CPC分类号： C22C14/00
摘要： The high temperature strength to density ratio of titanium aluminum niobium alloys of the Ti.sub.3 Al (alpha two) type is increased when molybdenum is added. New alloys contain by atomic percent 25-27 aluminum, 11-16 (niobium+molybdenum), 1-4 molybdenum, balance titanium. When vanadium replaces up to 3.5% molybdenum a lighter weight alloy is produced. The new alloys have higher elastic modulus and higher creep strength to density ratio than alloys without molybdenum.
摘要翻译： 当添加钼时，Ti 3 Al（α2）型钛铝铌合金的高温强度与密度比增加。 新合金含有原子百分比为25-27的铝，11-16（铌+钼），1-4钼，余量为钛。 当钒替代高达3.5％的钼时，产生更轻的合金。 与不含钼的合金相比，新型合金具有较高的弹性模量和较高的蠕变强度与密度比。
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公开(公告)号：US4244743A
公开(公告)日：1981-01-13
申请号：US32197
申请日：1979-04-23
IPC分类号： B22D41/02 , B22C1/00 , B22C7/00 , B22C9/00 , C04B35/00 , C04B35/447 , C04B35/50 , C04B35/505 , C04B35/51 , C04B35/547 , F27B14/10 , F27D1/00
CPC分类号： C04B35/547 , B22C9/00 , C04B35/50 , C04B35/505 , C04B35/51
摘要： Improved refractories for resisting attack of molten titanium aluminum and similar metals are provided by the inclusion of sulfur. Metal, oxygen, and sulfur combinations, wherein sulfur is present at from 10 to 60 atomic percent, are particularly useful.Disclosed is a material having the atomic formula M.sub.a S.sub.b O.sub.c where O is oxygen, S is sulfur, and M is at least one metal selected from the scandium subgroup of the periodic table transition metals (scandium, yttrium and the rare earths) and aluminum. In an alternate material, M is comprised of at least two elements, the first selected as above and the second selected from the alkaline earth metal group. A preferred material is formed by mixing and firing CaS and Y.sub.2 O.sub.3 in proportions which results in (Ca+Y).sub.0.43 S.sub.0.14 O.sub.0.43.
摘要翻译： 通过包含硫提供改进的耐熔融钛铝和类似金属的耐火材料。 其中硫以10至60原子％存在的金属，氧和硫组合是特别有用的。 公开了具有原子式MaSbOc的材料，其中O是氧，S是硫，M是选自周期表过渡金属（钪，钇和稀土）和铝的钪亚族中的至少一种金属。 在替代材料中，M由至少两个元素组成，如上所述选择第一元素，第二元素选自碱土金属基团。 通过混合并焙烧CaS和Y2O3以得到（Ca + Y）0.43S0.14O0.43的比例形成优选的材料。
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公开(公告)号：US4294615A
公开(公告)日：1981-10-13
申请号：US60265
申请日：1979-07-25
CPC分类号： C22C14/00
摘要： Cast and forged titanium alloys suited for use at temperatures over 600.degree. C. are based on TiAl gamma phase structure. Useful alloys have about 1.5% or greater tensile ductility at temperatures of 260.degree. C. and below, thereby making them fabricable and suited for engineering applications. Disclosed are alloys having weight percent compositions of 31-36 aluminum, 0-4 vanadium, balance titanium (in atomic percent, about: 45-50Al, 0-3V, bal Ti). The inclusion of about 0.1 weight percent carbon improves creep rupture strength. To obtain high tensile strength, the alloys are forged at about 1025.degree. C. and aged at about 900.degree. C.; to obtain higher creep rupture strength and tensile ductility, a solution anneal at about 1150.degree. C. is interposed before aging.
摘要翻译： 适合在600℃以上使用的铸造和锻造钛合金基于TiAlγ相结构。 有用的合金在260℃及以下的温度下具有约1.5％或更大的拉伸延展性，从而使它们可加工并适用于工程应用。 公开了具有31-36铝，0-4钒，余量钛（原子％，约：45-50Al，0-3V，bal Ti）的重量百分比组成的合金。 包含约0.1重量％的碳提高蠕变断裂强度。 为了获得高拉伸强度，合金锻造在约1025℃，并在约900℃老化。 为了获得更高的蠕变断裂强度和拉伸延展性，在老化之前插入约1150℃的固溶退火。
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5.发明授权Method for improving the toughness of brittle materials fabricated by powder metallurgy techniques 失效通过粉末冶金技术制造脆性材料的韧性提高方法
公开(公告)号：US4927458A
公开(公告)日：1990-05-22
申请号：US239720
申请日：1988-09-01
CPC分类号： C22C1/0458 , B22F1/0003
摘要： Methods for enhancing the toughness of otherwise brittle powder metallurgy materials are presented. Adding moderate amounts of tough particulate to such brittle material enhances their ductility in excess of that which would be predicted mathematically.
摘要翻译： 提出了提高脆性粉末冶金材料韧性的方法。 向这种脆性材料中加入适量的韧性颗粒增强了它们的延展性，超过了数学上可预测的。
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公开(公告)号：US4292077A
公开(公告)日：1981-09-29
申请号：US60264
申请日：1979-07-25
CPC分类号： C22C14/00
摘要： Titanium-aluminum-niobium alloys having narrow and critical composition ranges are disclosed. The alloys have room temperature tensile elongations of 1.5% or greater and creep strength to density ratios better than certain nickel superalloys. Thus, they may replace other heavier base alloys in many applications up to 750.degree. C. Aluminum content must be closely controlled as excess amount decreases ductility while insufficient amount decreases creep strength. Niobium content is also critical as excess amount adversely affects creep strength-to-density ratio while insufficient amount decreases ductility. And there is an important interrelationship between niobium and aluminum.Disclosed are alloys having atomic percent compositions of 24-27 Al, 11-16 Nb, balance Ti; more preferred are alloys of 24.5-26 Al, 12-15 Nb, balance Ti. (Nominally, these alloys in weight percent are Ti-13/15Al-19.5/30Nb and Ti-13.5/15Al-25/28Nb.) Vanadium is uniquely found to be substitutional for niobium in the foregoing alloys in amounts up to 4 atomic percent, thereby reducing density and increasing strength-to-density ratio while maintaining properties. Mechanical properties are dependent on heat treatment. For the best combination of strength and ductility, the alloys are heated or forged above the beta transus and controllably cooled to produce a fine Widmanstatten microstructure.
摘要翻译： 公开了具有窄和关键组成范围的钛 - 铝 - 铌合金。 合金的室温拉伸伸长率为1.5％以上，蠕变强度与密度比优于某些镍超合金。 因此，它们可以在高达750℃的许多应用中替代其它较重的基础合金。必须严格控制铝含量，因为过量减少延展性，而不足量降低蠕变强度。 铌含量也是至关重要的，因为过量对蠕变强度 - 密度比有不利影响，而不足量降低了延展性。 铌和铝之间存在重要的相互关系。 公开了具有原子百分比组成为24-27Al，11-16Nb，余量为Ti的合金; 更优选的是24.5-26Al，12-15Nb，余量Ti的合金。 （名义上，这些合金的重量百分比是Ti-13 / 15Al-19.5 / 30Nb和Ti-13.5 / 15Al-25 / 28Nb。）钒在上述合金中唯一被发现取代铌的量高达4原子％ 从而降低密度并提高强度 - 密度比，同时保持性能。 机械性能取决于热处理。 为了强度和延展性的最佳组合，将合金加热或锻造在β转子上方，并可控制地冷却以产生精细的Widmanstatten微观结构。
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公开(公告)号：US5508115A
公开(公告)日：1996-04-16
申请号：US041087
申请日：1993-04-01
CPC分类号： C22C14/00 , C22C49/12 , Y10T428/12035 , Y10T428/12049 , Y10T428/12056 , Y10T428/12063
摘要： A titanium alloy matrix fiber reinforced composite made from titanium alloy sheet processed to have ductility up to about 35%. Of particular usefulness is the composite having a Ti.sub.3 Al titanium aluminide having this level of ductility. The composites have good resistance to thermal cyclic fatigue.
摘要翻译： 由钛合金板制成的钛合金基体纤维增强复合材料具有高达约35％的延展性。 特别有用的是具有这种延展性水平的Ti 3 Al 3铝化钛的复合材料。 复合材料具有良好的耐热循环疲劳性能。
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8.发明授权
公开(公告)号：US4820356A
公开(公告)日：1989-04-11
申请号：US137853
申请日：1987-12-24
CPC分类号： C22F1/10
摘要： Heat treatments are described for improving the fatigue properties of superalloy articles, without adversely affecting other mechanical properties. The entire heat treatment process is performed below the gamma prime solvus temperature so that significant grain growth does not occur. The heat treatment cycle causes the formation of gamma prime particles in a controlled manner and morphology, first at the grain boundaries and then within the grains. The resultant microstructure possesses the benefits of a fine grain structure (improved resistance to fatigue crack initiation) and fine gamma prime particle size (improved resistance to crack growth).
摘要翻译： 描述了用于改善超级合金制品的疲劳性能的热处理，而不会不利地影响其他机械性能。 整个热处理过程在伽马提取溶质温度以下进行，从而不会发生显着的晶粒生长。 热处理循环以受控的方式和形态，首先在晶界处然后在晶粒内形成γ'粒子。 所得到的微结构具有细晶粒结构（改善的抗疲劳裂纹起始性）和细γ粒子尺寸（提高的抗裂纹生长性）的优点。
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