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    • 1. 发明专利
    • Ni-BASED AUSTENITIC SUPERALLOY WITH LOW THERMAL EXPANSION AND MANUFACTURING METHOD THEREFOR
    • 具有低热扩张性的镍基奥氏体超级合金及其制造方法
    • JP2003013161A
    • 2003-01-15
    • JP2001195741
    • 2001-06-28
    • Daido Steel Co LtdMitsubishi Heavy Ind Ltd三菱重工業株式会社大同特殊鋼株式会社
    • YAMAMOTO RYUICHIKADOYA YOSHIKUNIUMAGOE RYUTARONODA TOSHIHARUISOBE SUSUMUOKABE MICHIOKAWAI HISATAKA
    • F16J12/00C22C19/05
    • PROBLEM TO BE SOLVED: To provide a Ni-based austenitic superalloy with a low thermal expansion, having a coefficient of thermal expansion equal to that of a ferrite-based 12Cr steel, and high-temperature strength and corrosion/oxidation resistance equal to that of an austenite-based heat resistant alloy.
      SOLUTION: This super alloy includes carbon 0.15 mass% or less, silicon 1 mass% or less, manganese 1 mass% or less, chromium 5-20 mass%, molybdenum 17-26 mass%, aluminum 0.1-2.0 mass%, titanium 0.1-2.0 mass%, iron 10 mass% or less, boron 0.02 mass% or less, zirconium 0.2 mass% or less, tungsten, rhenium, and the balance substantially nickel, while the sum of aluminum and titanium content is 1-5.5 atom.%, satisfying the expression: 17≤Mo+(W+ Re)/2≤27, where Mo indicates a molybdenum content by mass%, W indicates a tungsten content by mass%, and Re indicates a rhenium content by mass%. The super alloy, further has a structure, in which a γ'-phase consisting of intermetallic compounds, and a A
      2 B-phase consisting of intermetallic compounds, form composite precipitates.
      COPYRIGHT: (C)2003,JPO
    • 要解决的问题:提供具有与铁素体系12Cr钢的热膨胀系数相当的热膨胀系数的具有低热膨胀系数的Ni基奥氏体超耐热合金,以及高温强度和耐腐蚀/抗氧化性等于 奥氏体型耐热合金。 解决方案:该超合金包括0.15质量%以下的碳,1质量%以下的硅,1质量%以下的锰,5〜20质量%的铬,17〜26质量%的铬,0.1〜2.0质量%的铝,0.1质量% -2.0质量%,铁10质量%以下,硼0.02质量%以下,0.2质量%以下的钨,铼,余量基本上为镍,铝和钛的总和为1-5.5原子。 %,满足以下表达式:17 <= Mo +(W + Re)/ 2 <= 27,其中Mo表示以质量%计含有的钼含量,W表示钨质量%,并且Re表示铼含量以质量%计。 超合金还具有由金属间化合物构成的γ'相和由金属间化合物构成的A2B相形成复合析出物的结构。
    • 6. 发明专利
    • TREATMENT METHOD FOR RESTORING PERFORMANCE OF Ni-BASED HEAT-RESISTANT ALLOY
    • 镍基耐热合金复合性能的处理方法
    • JP2005240186A
    • 2005-09-08
    • JP2005113701
    • 2005-04-11
    • Mitsubishi Heavy Ind Ltd三菱重工業株式会社
    • KAWAI HISATAKAHIBARA YOSHIHISAOKADA IKUOIMAZU TAKAYUKI
    • C22F1/10C22C19/05C22F1/00
    • PROBLEM TO BE SOLVED: To provide a performance-restoring treatment method which is applied to a high-temperature member, whose performance such as strength and ductility has been deteriorated through its long-term use at a high temperature, to restore its performance and enable its reuse, and can contribute to effective use of resources and environmental protection.
      SOLUTION: In the treatment method for restoring performance of a Ni-based heat-resistant alloy, the Ni-based heat-resistant alloy having a particular composition, whose performance has been deteriorated through a heat history, is subjected to a first solution treatment of keeping the alloy at 1,200±25°C for 1-5 hr and subsequently cooling it in a furnace, then to a second solution treatment of keeping the alloy at 1,140±25°C for 1-5 hr and subsequently air-cooling it, and then to an aging treatment of keeping the alloy at 835±25°C for 24±2 hr.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:为了提供一种应用于其高温部件的性能恢复处理方法,其特性如强度和延展性通过其在高温下的长期使用而劣化,以恢复其 使其能够重用,有助于有效利用资源和环境保护。 解决方案:在Ni基耐热合金的还原性能的处理方法中,具有特性组成的Ni基耐热合金,其性能已经通过热历史劣化, 将合金保持在1,200±25℃下1-5小时的溶液处理,随后在炉中冷却,然后进行第二种固溶处理,将合金保持在1140±25℃下1-5小时, 冷却,然后进行老化处理,将合金保持在835±25℃24±2小时。 版权所有(C)2005,JPO&NCIPI
    • 7. 发明专利
    • High-strength heat resisting steel for high- and low- pressure integrated rotor and turbine rotor
    • 用于高压和低压集成转子和涡轮转子的高强度耐热钢
    • JP2003027192A
    • 2003-01-29
    • JP2002137255
    • 2002-05-13
    • Mitsubishi Heavy Ind Ltd三菱重工業株式会社
    • KADOYA YOSHIKUNIUMAGOE RYUTAROKAWAI HISATAKA
    • F01D5/02C21D9/28C22C38/00C22C38/54F01D5/28F01D25/00
    • PROBLEM TO BE SOLVED: To provide 12% Cr-system heat resisting steel which maintains excellent high-temperature creep strength and simultaneously has excellent toughness in combination as well and further to provide a high- and low-pressure integrated turbine rotor having the excellent high-temperature creep strength and the excellent toughness in combination and a method of manufacturing the same.
      SOLUTION: The high-strength heat resisting steel for the high- and low- pressure integrated rotor characterized in that the steel has a component composition of specific ratios and has the metal structure obtained by depositing an M
      23 C
      6 type carbide and intermetallic compound mainly at their crystal boundaries and martensitic boundaries and depositing an MX type carbonitride within the martensite truss and that 0.2% yield strength is ≥75.8, kgf/mm
      2 and the method of manufacturing the high- and low-pressure integrated turbine rotor consisting of the high-strength heat resisting steel and the high- and low-pressure integrated turbine rotor.
      COPYRIGHT: (C)2003,JPO
    • 要解决的问题:提供12%的Cr系耐热钢,其保持优异的高温蠕变强度,同时具有优异的组合韧性,并进一步提供具有优异高的高低压一体式涡轮转子 温度蠕变强度和优异的韧性的组合及其制造方法。 解决方案:用于高压和低压集成转子的高强度耐热钢,其特征在于,钢具有特定比例的组分组成,并且具有通过主要在其中沉积M23C6型碳化物和金属间化合物而获得的金属结构 晶体边界和马氏体边界,并将MX型碳氮化物沉积在马氏体桁架内,0.2%的屈服强度为> = 75.8,kgf / mm 2,制造高压和低压集成涡轮转子的方法由 高强度耐热钢和高低压一体化涡轮转子。
    • 8. 发明专利
    • Thermal barrier coating degradation diagnosing method
    • 热障涂层降解诊断方法
    • JP2004156444A
    • 2004-06-03
    • JP2002319789
    • 2002-11-01
    • Mitsubishi Heavy Ind Ltd三菱重工業株式会社
    • OHARA MINORUTAKAHASHI KOJIKAWAI HISATAKA
    • F01D5/28F01D25/00F02C7/00
    • PROBLEM TO BE SOLVED: To rapidly perform re-coating or the like by correctly diagnosing degradation of thermal barrier coating executed on a high-temperature member for a gas turbine such as a gas turbine blade, and discovering damages such as peeling and wear of the coating.
      SOLUTION: Internal peeling of the thermal barrier coating is firstly inspected by the infrared ray thermography method. If a peeling pattern portion is detected as a result, a surface element analysis inspection by the fluorescent X-ray method and the film thickness measurement inspection by the eddy current flaw detection method are carried out on the peeling pattern portion. Presence/absence of peeling/wear of the thermal barrier coating is detected from the result of inspection, and degradation diagnosis is determined. If no peeling pattern portion is detected as a result of the internal peeling inspection by the infrared ray thermography method, the surface element analysis inspection by the fluorescent X-ray method is eliminated, and the film thickness measurement inspection by the eddy current flaw detection method is carried out for confirmation.
      COPYRIGHT: (C)2004,JPO
    • 要解决的问题:通过正确地诊断在诸如燃气轮机叶片的燃气轮机的高温部件上执行的热障涂层的劣化来快速地进行再涂覆等,并且发现诸如剥离和 磨损的涂层。

      解决方案:首先通过红外线热成像方法检查热障涂层的内部剥离。 如果检测到剥离图案部分,则在剥离图案部分上进行通过荧光X射线法的表面元素分析检查和通过涡流探伤方法的膜厚测量检查。 从检查结果中检测出有无剥离/磨损的障碍涂层,确定劣化诊断。 作为通过红外线热成像法的内部剥离检查的结果,没有检测到剥离图案部分,消除了通过荧光X射线法的表面元素分析检查,并且通过涡流探伤方法进行膜厚测量检查 进行确认。 版权所有(C)2004,JPO