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11. 发明授权

US4816084A Method of forming fatigue crack resistant nickel base superalloys 失效
标题翻译：形成耐疲劳裂纹镍基超级合金的方法
公开(公告)号：US4816084A
公开(公告)日：1989-03-28
申请号：US907550
申请日：1986-09-15
申请人： Keh-Minn Chang
发明人： Keh-Minn Chang
IPC分类号： C22F1/00 , C22F1/10
CPC分类号： C22F1/10
摘要： A method is provided for reducing fatigue crack propagation in nickel base superalloys. The method involves a supersolvus anneal in which essentially all .gamma.' precipitate phase is dissolved. The supersolvus anneal is folloed by slow cooling which is at a rate which substantially reduces time dependent fatigue crack growth but which preserves the strength of the alloy at a useful level for many superalloy applications.
摘要翻译：提供了一种减少镍基超级合金中的疲劳裂纹扩展的方法。该方法涉及超溶剂退火，其中基本上所有的γ'沉淀相溶解。通过缓慢冷却来解决超溶解退火，其速率基本上减少了时间依赖性的疲劳裂纹扩展，但是在许多超级合金应用中保持了合金的强度在有用的水平。

12. 发明授权

US4814023A High strength superalloy for high temperature applications 失效
标题翻译：高强度高温合金用于高温应用
公开(公告)号：US4814023A
公开(公告)日：1989-03-21
申请号：US52513
申请日：1987-05-21
申请人： Keh-Minn Chang
发明人： Keh-Minn Chang
IPC分类号： C22C19/05 , C22F1/10
CPC分类号： C22F1/10 , C22C19/056
摘要： A novel alloy is provided having approximately the following ingredient formula:______________________________________ Element Composition in weight % ______________________________________ Ni balance Cr 10.0 Co 15.0 Mo 5.0 W 5.0 Al 3.5 Ti 3.0 Ta 7.2 Zr 0.03 B 0.03 C 0.03. ______________________________________ The alloy has a solvus temperature of below 1200.degree. C. Fatigue crack propagation rate is low for metal samples cooled at rates of 50.degree. C./min to 200.degree. C./min. The alloy has uniquely high strength at temperatures at and above 1200.degree. F.

13. 发明授权

US4793868A Thermomechanical method of forming fatigue crack resistant nickel base superalloys and product formed 失效
标题翻译：形成耐疲劳裂纹镍基超级合金的热机械方法和产品形成
公开(公告)号：US4793868A
公开(公告)日：1988-12-27
申请号：US907275
申请日：1986-09-15
申请人： Keh-Minn Chang
发明人： Keh-Minn Chang
IPC分类号： C22F1/00 , C22F1/10
CPC分类号： C22F1/10
摘要： A method has been discovered for reducing fatigue crack growth in nickel base superalloys. The method involves the step of forming a part to near net shape by forging or by other forming technique. The part is then heat treated to develop regular grains by recystallization. Grains of about 35 .mu.m average diameters are prepared. The part is then deformed at least 15% to achieve a net shape desired.
摘要翻译：已经发现一种减少镍基超级合金的疲劳裂纹扩展的方法。该方法包括通过锻造或通过其它成形技术形成部分至接近净形状的步骤。然后将该部分进行热处理以通过再结晶形成规则的颗粒。制备平均直径约35微米的颗粒。然后将该部分变形至少15％以实现所需的净形状。

14. 发明授权

US4725322A Carbon containing boron doped tri-nickel aluminide 失效
标题翻译：含硼硼掺杂的三镍铝化物
公开(公告)号：US4725322A
公开(公告)日：1988-02-16
申请号：US783513
申请日：1985-10-03
申请人： Shyh-Chin Huang , Keh-Minn Chang , Alan I. Taub
发明人： Shyh-Chin Huang , Keh-Minn Chang , Alan I. Taub
IPC分类号： C22C1/02 , C22C19/00 , C22C19/03
CPC分类号： C22C19/007
摘要： A tri-nickel aluminide base alloy composition is provided with a desirable combination of tensile strength and ductility. The composition is prepared to include boron dopant in combination with relatively low percentages of carbon for the high increase in strength achieved. The composition has an Ll.sub.2 of crystalline structure. It is prepared by rapid solidification at a cooling rate of at least 10.sup.3 .degree. C. per second.
摘要翻译：三镍铝基合金组合物具有拉伸强度和延展性的理想组合。制备组合物以包含硼掺杂剂与相对低百分比的碳的组合，以实现高强度的增加。该组合物具有晶体结构的L12。通过以每秒至少103℃的冷却速度快速固化而制备。

15. 发明授权

US4685977A Fatigue-resistant nickel-base superalloys and method 失效
标题翻译：耐疲劳镍基超级合金及方法
公开(公告)号：US4685977A
公开(公告)日：1987-08-11
申请号：US677449
申请日：1984-12-03
申请人： Keh-Minn Chang
发明人： Keh-Minn Chang
IPC分类号： C22C19/05 , C22F1/00 , C22F1/10
CPC分类号： C22F1/10 , C22C19/05
摘要： New .gamma.' strengthened nickel-base superalloy compositions are described that, when forged and properly heat treated, demonstrate superior resistance to fatigue crack growth accompanied by very good high temperature properties. Parts can be fabricated (e.g., using conventional cast and wrought processing) from these alloys without encountering difficulty in forging.
摘要翻译：描述了新的γ'强化镍基超级合金组合物，当锻造和适当的热处理时，表现出优异的耐疲劳裂纹扩展性，伴随着非常好的高温性能。可以从这些合金制造零件（例如，使用常规铸造和锻造加工），而不会在锻造中遇到困难。

16. 发明授权

US4613368A Tri-nickel aluminide compositions alloyed to overcome hot-short phenomena 失效
标题翻译：合金化三镍铝化合物，以克服热短路现象
公开(公告)号：US4613368A
公开(公告)日：1986-09-23
申请号：US783585
申请日：1985-10-03
申请人： Keh-Minn Chang , Shyh-Chin Huang , Alan I. Taub
发明人： Keh-Minn Chang , Shyh-Chin Huang , Alan I. Taub
IPC分类号： B22F9/00 , C22C1/04 , C22C19/00 , C22C19/03 , B22F3/00
CPC分类号： B22F9/008 , C22C1/0433 , C22C19/007
摘要： A tri-nickel aluminide base composition is provided which has good ductility at all temperatures. The composition has a relatively high concentration of cobalt substituent and is doped by boron. It also has minor concentrations of at least two other substituent metals selected from the group consisting of niobium, hafnium, vanadium, molybdenum and zirconium.
摘要翻译：提供在所有温度下具有良好延展性的三镍铝化物基底组合物。该组合物具有较高浓度的钴取代基并且被硼掺杂。它还具有少量至少两种选自铌，铪，钒，钼和锆的其它取代金属。

17. 发明授权

US4606888A Inhibition of grain growth in Ni.sub.3 Al base alloys 失效
标题翻译：在Ni3Al基合金中抑制晶粒生长
公开(公告)号：US4606888A
公开(公告)日：1986-08-19
申请号：US646879
申请日：1984-09-04
申请人： Shyh-Chin Huang , Keh-Minn Chang , Alan I. Taub
发明人： Shyh-Chin Huang , Keh-Minn Chang , Alan I. Taub
IPC分类号： C22C19/00 , C22C19/03
CPC分类号： C22C19/007
摘要： Inhibition of grain size growth in a tri-nickel aluminide is achieved by additions of minor amounts of a metal selected from the group comprising rhenium and molybdenum.
摘要翻译：通过添加少量选自铼和钼的组中的金属来实现三镍铝化物中的晶粒尺寸生长的抑制。

18. 发明授权

US5393483A High-temperature fatigue-resistant nickel based superalloy and thermomechanical process 失效
标题翻译：高温耐疲劳镍基超级合金和热机械工艺
公开(公告)号：US5393483A
公开(公告)日：1995-02-28
申请号：US502951
申请日：1990-04-02
申请人： Keh-Minn Chang
发明人： Keh-Minn Chang
IPC分类号： C22C1/04 , C22C19/05 , C22F1/10 , B22F3/00
CPC分类号： C22C19/056 , C22C1/0433 , C22F1/10
摘要： A nickel based superalloy composition is disclosed that provides increased high temperature stress-rupture strength and improved resistance to fatigue crack propagation at elevated temperatures up to about 760.degree. C. The composition is comprised of, by weight percent, about 10% to 12% chromium, about 17% to 19% cobalt, about 1.5% to 3.5% molybdenum, about 4.5% to 6.5% tungsten, about 3.25% to 4.25% aluminum, about 3.25% to 4.25% titanium, about 2.5% to 3,5% tantalum, about 0.02% to 0.08% zirconium, about 0.005% to 0.03% boron, less than 0.1% carbon, and the balance essentially nickel. Thermomechanical processing including isothermal forging at controlled strain rates and temperature ranges, supersolvus annealing, and slow cooling are disclosed for producing an enlarged grain structure that provides the improved properties in the alloy of this invention.
摘要翻译：公开了一种镍基超级合金组合物，其在高达约760℃的高温下提供增加的高温应力 - 断裂强度和改善的抗疲劳裂纹扩展性。该组合物包含按重量百分比计约10％至12％的铬，约17％至19％的钴，约1.5％至3.5％的钼，约4.5％至6.5％的钨，约3.25％至4.25％的铝，约3.25％至4.25％的钛，约2.5％至3.5％的钽，约0.02％至0.08％的锆，约0.005％至0.03％的硼，小于0.1％的碳，余量基本上为镍。公开了包括在受控应变速率和温度范围内的等温锻造，超溶解退火和缓慢冷却的热机械加工，用于产生增加的晶粒结构，其提供了本发明合金中改进的性能。

19. 发明授权

US5061324A Thermomechanical processing for fatigue-resistant nickel based superalloys 失效
标题翻译：耐疲劳镍基超级合金的热机械加工
公开(公告)号：US5061324A
公开(公告)日：1991-10-29
申请号：US503007
申请日：1990-04-02
申请人： Keh-Minn Chang
发明人： Keh-Minn Chang
IPC分类号： B22F3/17 , B22F3/24 , C22F1/10
CPC分类号： B22F3/17 , B22F3/24 , C22F1/10
摘要： Thermomechanical processing treatments for powder compacts formed from powdered superalloy compositions having a volume fraction of gamma prime greater than 35 percent are disclosed. Isothermal forging within critical ranges of strain rate and temperature is followed by supersolvus annealing and slow cooling treatments. An enlarged grain structure about 50 to 60 microns in size is produced that improves resistance to fatigue crack propagation in the superalloys.
摘要翻译：公开了由具有大于35％的γ'的体积分数的粉末状超级合金组合物形成的粉末压块的热机械加工处理。在应变速率和温度的临界范围内的等温锻造之后是超溶解退火和缓慢冷却处理。产生尺寸为约50至60微米的扩大的晶粒结构，其提高了对超级合金中的疲劳裂纹扩展的抗性。

20. 发明授权

US4911884A High strength non-magnetic alloy 失效
标题翻译：高强度非磁性合金
公开(公告)号：US4911884A
公开(公告)日：1990-03-27
申请号：US303343
申请日：1989-01-30
申请人： Keh-Minn Chang
发明人： Keh-Minn Chang
IPC分类号： C22C38/08 , C22C38/50
CPC分类号： C22C38/50 , C22C38/08
摘要： This invention relates to corrosion resistant, austenitic, non-magnetic alloys. The alloys contain about 32 to 38% nickel, about 3 to 7% chromium, about 3 to 5% titanium, about 0.3 to 1.5% aluminum, about 0.5 to 1.5% molybdenum, an effective amount of vanadium, about 0.005 to 0.02% boron, up to about 0.02% carbon, and the balance substantially iron. The alloys are controlled temperature hot rolled and age annealed to provide strain hardening and precipitation strengthening to achieve yield strength objectives established for retaining rings in new high capacity generators. Yield strengths of at least about 200 ksi can be produced by the alloys of this invention making them suitable for use in new high capacity generators.
摘要翻译：本发明涉及耐腐蚀的奥氏体非磁性合金。该合金含有约32至38％的镍，约3至7％的铬，约3至5％的钛，约0.3至1.5％的铝，约0.5至1.5％的钼，有效量的钒，约0.005至0.02％的硼，高达约0.02％的碳，余量基本上为铁。合金是受控温度热轧和老化退火，以提供应变硬化和析出强化，以实现在新的高容量发电机中保持环所建立的屈服强度目标。通过本发明的合金可以产生至少约200ksi的屈服强度，使其适用于新的高容量发电机。

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