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    • 5. 发明授权
    • TiAl turbine rotor and method of manufacturing
    • TiAl涡轮转子及其制造方法
    • US6007301A
    • 1999-12-28
    • US953249
    • 1997-10-17
    • Toshiharu NodaMichio OkabeTakao Shimizu
    • Toshiharu NodaMichio OkabeTakao Shimizu
    • B23K1/00F01D5/02F01D5/04F01D5/28B63H1/28
    • B23K1/0018F01D5/025F01D5/043F01D5/28B23K2201/04F05D2230/23F05D2300/133F05D2300/173
    • A turbine rotor consisting of a wheel made of a TiAl alloy of good heat resistance and a rotor shaft made of a steel with good bonding strength is disclosed. As the shaft material a structural steel or a martensitic heat resistant steel is used. A TiAl turbine wheel made by precision casting is butted to the shaft with insertion of a brazing filler in the butted interfaces and stress of 0.01 kgf/mm.sup.2 or higher but lower than yield stress of the shaft is applied on the butted interfaces under heating by high frequency induction heating in atmosphere of an inert gas or a reducing gas to a temperature higher than the liquidus temperature of the brazing metal but not exceeding 100.degree. C. above the liquidus temperature. Turbine rotors with good accordance of the axes of the wheel and the shaft will be obtained by fitting a projection (or recess) and a recess (or projection) formed at the base of the wheel and the end of the shaft concentrically to the outer shape thereof, and by brazing the ring-shaped area outside the fitted parts.
    • 公开了一种涡轮转子,由具有良好耐热性的TiAl合金制成的车轮和由具有良好接合强度的钢制成的转子轴组成。 作为轴材料,使用结构钢或马氏体耐热钢。 通过精密铸造制成的TiAl涡轮机叶片在对接界面上插入钎焊料,并且在0.01kgf / mm2以上的应力下被接合到轴上,但低于在加热下的对接界面上的屈服应力高 在惰性气体或还原气体的气氛中进行高频感应加热至比钎焊金属的液相线温度高但不超过液相温度100℃以上的温度。 通过将形成在车轮的底部和轴的端部的突起(或凹部)和凹部(或凸起)同心地配合到外部形状来获得与车轮和轴的轴线良好一致的涡轮转子 并且通过将环形区域钎焊在装配部件的外部。
    • 6. 发明授权
    • Titanium alloy having good heat resistance and method of producing parts therefrom
    • 具有良好耐热性的钛合金及其制造方法
    • US06284071B1
    • 2001-09-04
    • US09261388
    • 1999-03-03
    • Akihiro SuzukiToshiharu NodaMichio Okabe
    • Akihiro SuzukiToshiharu NodaMichio Okabe
    • C22F118
    • C22F1/183C22C14/00
    • A titanium alloy having improved heat resistance in addition to the inherent properties of lightness and corrosion resistance. The alloy consists essentially of, by weight %, Al: 5.0-7.0%, Sn: 3.0-5.0%, Zr: 2.5-6.0%, Mo: 2.0-4.0%, Si: 0.05-0.80%, C: 0.001-0.200%, O: 0.05-0.20%, optionally further one or two of Nb and Ta: 0.3-2.0%, and the balance of Ti and inevitable impurities. A method of producing parts from this alloy comprises subjecting the titanium alloy of the above described alloy composition to heat treatment at a temperature of &bgr;-region, combination of rapid cooling and slow cooling or combination of water quenching and annealing, hot processing in &agr;+&bgr; region, solution treatment and aging treatment.
    • 除耐酸性和耐腐蚀性的固有特性外,还具有耐热性提高的钛合金。 该合金主要由Al:5.0-7.0%,Sn:3.0-5.0%,Zr:2.5-6.0%,Mo:2.0-4.0%,Si:0.05-0.80%,C:0.001-0.200重量%组成 %,O:0.05-0.20%,任选进一步的Nb和Ta中的一种或两种:0.3-2.0%,余量为Ti和不可避免的杂质。 从该合金制造零件的方法包括将上述合金组合物的钛合金在β区域的温度下进行热处理,快速冷却和缓慢冷却的组合或水淬和退火的组合,α+ β区,溶液处理和时效处理。