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    • 1. 发明专利
    • Damage evaluation method and apparatus for metallic material
    • 金属材料的损伤评估方法和装置
    • JP2012002614A
    • 2012-01-05
    • JP2010136752
    • 2010-06-16
    • Hitachi LtdKyushu Electric Power Co Inc九州電力株式会社株式会社日立製作所
    • SATO JUNKONNO SHINYAICHIKAWA KUNIHIROKANETANI AKIHIROWATANABE HAJIMEKUSUMOTO JUNICHI
    • G01N23/203
    • PROBLEM TO BE SOLVED: To provide a method capable of high accuracy damage evaluation for metallic material and residual life prediction as well.SOLUTION: A damage evaluation method for metallic material comprises a measurement step (S2) of measuring crystal orientation at a plurality of measuring points of a specimen of metallic material by an EBSP method, an analysis step (S3) of analyzing a misorientation function value that is defined by a crystal misorientation at each measuring point relative to a reference measuring point among the plurality of measuring points to obtain a damage parameter of the specimen, and evaluation steps (S4) and (S5) of evaluating a damage rate of the specimen based on the damage parameter of the specimen from the analysis in the analyzing step by reference to a correlation between damage rate and damage parameter previously obtained from an other specimen that is made of the same kind of metallic material as the specimen and has a known damage rate.
    • 要解决的问题:提供一种能够对金属材料进行高精度损伤评估和残余寿命预测的方法。 解决方案:金属材料的损伤评估方法包括通过EBSP方法测量金属材料样品的多个测量点处的晶体取向的测量步骤(S2),分析取向差的分析步骤(S3) 通过在各测量点处相对于基准测量点的晶体取向定义的功能值,以获得样本的损伤参数,以及评估步骤(S4)和(S5)评估损伤率 参照分析步骤中分析的试样的损伤参数,根据先前从与样品相同种类的金属材料制成的其他样品获得的损伤率和损伤参数之间的相关性,并且具有 已知伤害率。 版权所有(C)2012,JPO&INPIT
    • 3. 发明专利
    • Repair method for gas turbine rotor vane
    • 燃气轮机转向架维修方法
    • JP2009041449A
    • 2009-02-26
    • JP2007207345
    • 2007-08-09
    • Hitachi LtdKyushu Electric Power Co Inc九州電力株式会社株式会社日立製作所
    • ICHIKAWA KUNIHIRODOI HIROYUKIKONNO SHINYAKANETANI AKIHIROKUSUMOTO JUNICHIKITAGAWA HIDEAKI
    • F01D25/00B23K31/00F02C7/00
    • B23P6/045B23P6/005
    • PROBLEM TO BE SOLVED: To provide a repair method capable of suppressing the frequency of repairs of thermal fatigue cracks generated in a turbine rotor vane and of improving economy and reliability. SOLUTION: In the repair method for the gas turbine rotor vane for repairing thermal fatigue cracks generated in a blade part 1 of the gas turbine rotor vane having a structure for introducing compressed air discharged from a compressor to a blade inner part as cooling air, a range where thermal fatigue cracks may be generated in the blade part 1 under the operation after this repair is predicted, and a section in the region where thermal fatigue cracks may be generated including the portion where thermal fatigue cracks were generated is removed. A coupon material 10 having the same shape and material quality of that of the blade part 1 is fitted to the removed section and is welded to the blade part 1 by a laser. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供能够抑制在涡轮转子叶片中产生的热疲劳裂纹的修理频率并提高经济性和可靠性的修复方法。 解决方案:在用于修复燃气轮机转子叶片的叶片部分1中产生的热疲劳裂纹的燃气轮机转子叶片的修理方法中,其具有用于将从压缩机排出的压缩空气引入到叶片内部的结构作为冷却 空气,预测在该修复之后的操作中可能在叶片部分1中产生热疲劳裂纹的范围,并且去除可能产生包括产生热疲劳裂纹的部分的热疲劳裂纹的区域中的部分。 具有与刀片部1的形状和材料质量相同的形状和材料质量的优惠券材料10被装配到去除部分,并通过激光焊接到刀片部分1。 版权所有(C)2009,JPO&INPIT
    • 4. 发明专利
    • Damage evaluation method of gas turbine part
    • 燃气涡轮机损伤评估方法
    • JP2006200962A
    • 2006-08-03
    • JP2005011141
    • 2005-01-19
    • Hitachi LtdKyushu Electric Power Co Inc九州電力株式会社株式会社日立製作所
    • ICHIKAWA KUNIHIROKONNO SHINYADOI HIROYUKIKANETANI AKIHIRONAGAE MASATAKA
    • G01N33/20G01M99/00
    • PROBLEM TO BE SOLVED: To provide a damage evaluation method of a gas turbine part which enables a reduction of the estimate error of life.
      SOLUTION: The damage of the gas turbine part is evaluated on the basis of FEM temperature analyzing results by performing a step (a) for transferring the metal texture of the surface of the gas turbine part to a replica using an electrolytic etching method, a step (b) for observing the replica, on which a conductive substance is vapor-deposited by a scanning electron microscope to measure the mean particle size of a precipitate, a step (c) for estimating a metal temperature from the measured mean particle size of the precipitate and a step (d) for analyzing an FEM temperature using the estimate result of the metal temperature and an inverse problem analyzing technique.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供能够降低生命估计误差的燃气轮机部件的损伤评估方法。 解决方案:通过执行使用电解蚀刻方法将燃气轮机部件的表面的金属质感转印到副本的步骤(a),基于FEM温度分析结果来评价燃气轮机部件的损坏 ,用于观察复制品的步骤(b),通过扫描电子显微镜气相沉积导电物质以测量沉淀物的平均粒度;步骤(c),用于从测量的平均粒子估计金属温度 沉淀物的尺寸和使用金属温度的估计结果和逆问题分析技术来分析FEM温度的步骤(d)。 版权所有(C)2006,JPO&NCIPI
    • 5. 发明专利
    • Evaluation method and device for crack evolution velocity of metallic material
    • 金属材料裂纹演化速度的评估方法和装置
    • JP2012073126A
    • 2012-04-12
    • JP2010218447
    • 2010-09-29
    • Hitachi LtdKyushu Electric Power Co Inc九州電力株式会社株式会社日立製作所
    • KONNO SHINYAICHIKAWA KUNIHIROSATO JUNKANETANI AKIHIROWATANABE HAJIMEKUSUMOTO JUNICHI
    • G01N23/20G01N17/00
    • PROBLEM TO BE SOLVED: To evaluate crack evolution velocity of metallic material with high accuracy and to evaluate remaining life as well.SOLUTION: The evaluation method for crack evolution velocity of metallic material of the present invention comprises: a measurement step (S2) for measuring crystal orientation at multiple measurement points in a region including a tip of crack in a sample formed of metallic material by an EBSP method; an analysis step (S3) for analyzing a misorientation function value indicating deviation of the crystal orientation at each measurement point to acquire an evaluation parameter of the sample; and evaluation steps (S4, S5) for evaluating the crack evolution velocity of the sample based on the evaluation parameter of the sample acquired by the analysis at the analysis step, by referring to correlation between a crack evolution velocity and an evaluation parameter acquired from another sample which is formed of the same kind of metallic material as the sample and whose crack evolution velocity is known since a crack evolution test is performed in advance.
    • 要解决的问题:以高精度评估金属材料的裂纹演化速度,并评估剩余寿命。 解决方案:本发明的金属材料的裂纹扩展速度的评价方法包括:测量步骤(S2),用于测量由金属材料形成的样品中的包括裂纹尖端的区域中的多个测量点处的晶体取向 通过EBSP方法; 分析步骤(S3),用于分析指示每个测量点处的晶体取向的偏差的取向函数值,以获取样本的评估参数; 以及评估步骤(S4,S5),用于基于通过分析步骤中的分析获得的样本的评估参数,通过参考裂纹演化速度和从另一个获取的评估参数之间的相关性来评估样品的裂纹演变速度 样品由与样品相同种类的金属材料形成,并且由于进行裂纹扩展试验,所以其已知的裂纹扩展速度是已知的。 版权所有(C)2012,JPO&INPIT
    • 10. 发明专利
    • HIGH-STRENGTH Ni-BASED FORGED SUPERALLOY, AND METHOD FOR PRODUCING THE SAME
    • 高强度Ni基锻造的超级合金及其制造方法
    • JP2011084812A
    • 2011-04-28
    • JP2010205741
    • 2010-09-14
    • Hitachi Ltd株式会社日立製作所
    • KAMOSHIDA HIROKIKONNO SHINYA
    • C22C19/05C22F1/00C22F1/10F01D5/28F01D25/00
    • C22C19/056C22C19/055C22F1/10
    • PROBLEM TO BE SOLVED: To provide a high-strength heat-resistant Ni-based forged alloy in which each crystal grain size of a polycrystal is made large so as to increase the strength of creep, and simultaneously, deterioration in the ductility of the polycrystal is suppressed, and to provide a method for producing the same. SOLUTION: The Ni-based forged superalloy has a composition comprising 0.005 to 0.2% C, 0 to 1% Si, 0 to 1% Mn, 10 to 24% Cr, at least one kind selected from Mo and W by 5 to 17% in the provision of [Mo concentration]+0.5[W concentration], 0.5 to 2% Al, 1 to 3.5% Ti, 0 to 10% Fe and at least one kind selected from 0.002 to 0.02% B and 0.01 to 0.2% Zr, and the balance Ni of 48 to 80% with inevitable impurities. The superalloy is composed of a polycrystal, and the average grain size of the crystals after heat treatment is 72 to 289 μm. In the superalloy, a plurality of precipitates are precipitated along crystal grain boundaries after the heat treatment, and the average length of the precipitated in the optional cross-section of the polycrystal is 0.5 to 2.5 μm. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:为了提供使多晶体的每个晶粒尺寸增大以提高蠕变强度的高强度耐热Ni基锻造合金,并且同时延展性的劣化 抑制多晶体,并提供其制造方法。 解决方案:Ni系锻造超合金具有含有0.005〜0.2%的C,0〜1%的Si,0〜1%的Mn,10〜24%的Cr,选自Mo和W中的至少1种, 至[17],提供[Mo浓度] +0.5 [W浓度],0.5-2%Al,1至3.5%Ti,0至10%Fe和至少一种选自0.002至0.02%B和0.01至 0.2%Zr,余量为48〜80%的不可避免的杂质。 超合金由多晶构成,热处理后的结晶的平均粒径为72〜289μm。 在该高温合金中,在热处理后,沿晶界析出多个析出物,在多晶体的任意截面中析出的平均长度为0.5〜2.5μm。 版权所有(C)2011,JPO&INPIT