公开(公告)号：US08444778B2

公开(公告)日：2013-05-21

申请号：US12675688

申请日：2008-08-29

申请人： Toshihiro Uehara ,  Takehiro Ohno ,  Akihiro Toji ,  Takashi Sato ,  Gang Bao ,  Shinya Imano ,  Hiroyuki Doi

发明人： Toshihiro Uehara ,  Takehiro Ohno ,  Akihiro Toji ,  Takashi Sato ,  Gang Bao ,  Shinya Imano ,  Hiroyuki Doi

IPC分类号： C22C19/05 ,  C22F1/10

CPC分类号： C22C19/055 ,  C22F1/10 ,  F28F21/083

摘要： Disclosed is a low-thermal-expansion Ni-based super-heat-resistant alloy for a boiler, which has excellent high-temperature strength. The alloy can be welded without the need of carrying out any aging treatment. The alloy has a Vickers hardness value of 240 or less. The alloy comprises (by mass) C in an amount of 0.2% or less, Si in an amount of 0.5% or less, Mn in an amount of 0.5% or less, Cr in an amount of 10 to 24%, one or both of Mo and W in such an amount satisfying the following formula: Mo+0.5 W=5 to 17%, Al in an amount of 0.5 to 2.0%, Ti in an amount of 1.0 to 3.0%, Fe in an amount of 10% or less, and one or both of B and Zr in an amount of 0.02% or less (excluding 0%) for B and in an amount of 0.2% or less (excluding 0%) for Zr, with the remainder being 48 to 78% of Ni and unavoidable impurities.

摘要翻译： 公开了一种用于锅炉的低热膨胀Ni基超耐热合金，其具有优异的高温强度。 可以焊接合金，而不需要进行任何时效处理。 该合金的维氏硬度值为240以下。 该合金含有0.2质量％以下的Si（以质量计），0.5％以下的Si，0.5％以下的Mn，10〜24％的Cr，1种或2种 的Mo和W的量满足下式：Mo + 0.5W = 5〜17％，Al为0.5〜2.0％，Ti为1.0〜3.0％，Fe为10％ 以下的B和Zr中的一种或两种，B的含量为0.02％以下（不包括0％），Zr的含量为0.2％以下（不含0％），余量为48〜78 ％的Ni和不可避免的杂质。

公开(公告)号：US20100226814A1

公开(公告)日：2010-09-09

申请号：US12675688

申请日：2008-08-29

申请人： Toshihiro Uehara ,  Takehiro Ohno ,  Akihiro Toji ,  Takashi Sato ,  Gang Bao ,  Shinya Imano ,  Hiroyuki Doi

发明人： Toshihiro Uehara ,  Takehiro Ohno ,  Akihiro Toji ,  Takashi Sato ,  Gang Bao ,  Shinya Imano ,  Hiroyuki Doi

IPC分类号： C22C19/05 ,  C22F1/10

CPC分类号： C22C19/055 ,  C22F1/10 ,  F28F21/083

摘要： Disclosed is a low-thermal-expansion Ni-based super-heat-resistant alloy for a boiler, which has excellent high-temperature strength. The alloy can be welded without the need of carrying out any aging treatment. The alloy has a Vickers hardness value of 240 or less. The alloy comprises (by mass) C in an amount of 0.2% or less, Si in an amount of 0.5% or less, Mn in an amount of 0.5% or less, Cr in an amount of 10 to 24%, one or both of Mo and W in such an amount satisfying the following formula: Mo+0.5 W=5 to 17%, Al in an amount of 0.5 to 2.0%, Ti in an amount of 1.0 to 3.0%, Fe in an amount of 10% or less, and one or both of B and Zr in an amount of 0.02% or less (excluding 0%) for B and in an amount of 0.2% or less (excluding 0%) for Zr, with the remainder being 48 to 78% of Ni and unavoidable impurities.

摘要翻译： 公开了一种用于锅炉的低热膨胀Ni基超耐热合金，其具有优异的高温强度。 可以焊接合金，而不需要进行任何时效处理。 该合金的维氏硬度值为240以下。 该合金含有0.2质量％以下的Si（以质量计），0.5％以下的Si，0.5％以下的Mn，10〜24％的Cr，1种或2种 的Mo和W的量满足下式：Mo + 0.5W = 5〜17％，Al为0.5〜2.0％，Ti为1.0〜3.0％，Fe为10％ 以下的B和Zr中的一种或两种，B的含量为0.02％以下（不含0％），Zr的含量为0.2％以下（不含0％），余量为48〜78 ％的Ni和不可避免的杂质。

公开(公告)号：US08883072B2

公开(公告)日：2014-11-11

申请号：US12551884

申请日：2009-09-01

申请人： Jun Sato ,  Shinya Imano ,  Hiroyuki Doi

发明人： Jun Sato ,  Shinya Imano ,  Hiroyuki Doi

IPC分类号： C21D1/18 ,  F01D5/06 ,  B23K35/30 ,  C22F1/10 ,  B23K35/00 ,  C22C19/05 ,  C22C38/00 ,  C22C30/00

CPC分类号： C22C19/055 ,  B23K35/004 ,  B23K35/304 ,  B23K2101/001 ,  C22C19/056 ,  C22F1/10 ,  F01D5/063 ,  Y02T50/671

摘要： The present invention provides, in a γ′ phase precipitation strengthening type Ni-base alloy, an alloy excellent in heat treatment capability and weldability and suitable for joint with a ferritic steel. Further, the present invention provides a welded turbine rotor having the strength, ductility, and toughness simultaneously over the whole welded structure when a precipitation strengthening type Ni-base alloy having a heatproof temperature of 675° C. or higher is joined to a ferritic steel.A Ni-base alloy according to the present invention contains cobalt, chromium, aluminum, carbon, boron, and at least either tungsten or molybdenum with the remainder being nickel and inevitable impurities, having an alloy composition including 12 to 25 percent by mass of Co, 10 to 18 percent by mass of Cr, 2.0 to 3.6 percent by mass of Al, 0.01 to 0.15 percent by mass of C, 0.001 to 0.03 percent by mass of B, the total amount of tungsten and molybdenum being 5.0 to 10 percent by mass.A welded turbine rotor is structured by joining or building up by welding a second Ni-base alloy to a first Ni-base alloy that a γ′ phase solid solution temperature thereof is 900° C. or higher and a creep fracture strength at 675° C. is 100 MPa or more, and further welding a ferritic steel to the second Ni-base alloy. The second Ni-base alloy is a γ′ phase (Ni3Al) precipitation strengthening type Ni-base alloy, a γ′ phase solid solution temperature thereof is 850° C. or lower.

摘要翻译： 本发明在γ-相析出强化型Ni基合金中提供了热处理能力和焊接性优异的合金，适用于与铁素体钢接合的合金。 此外，本发明提供了一种在整个焊接结构中具有强度，延展性和韧性的焊接式涡轮转子，当耐热温度为675℃以上的析出强化型Ni基合金与铁素体钢 。 根据本发明的镍基合金包含钴，铬，铝，碳，硼，以及至少钨或钼，其余为镍和不可避免的杂质，其合金组成包含12〜25质量％的Co ，10〜18质量％的Cr，2.0〜3.6质量％的Al，0.01〜0.15质量％的C，0.001〜0.03质量％的B，钨和钼的总量为5.0〜10质量％ 质量 焊接的涡轮转子通过将第二Ni基合金焊接到γ'相固相温度为900℃以上的第一Ni基合金和675°的蠕变断裂强度下， C为100MPa以上，进一步将铁素体钢焊接到第二Ni基合金。 第二Ni基合金是γ'相（Ni3Al）析出强化型Ni基合金，γ'相固溶温度为850℃以下。

公开(公告)号：US08524149B2

公开(公告)日：2013-09-03

申请号：US12728292

申请日：2010-03-22

申请人： Jun Sato ,  Shinya Imano ,  Hiroyuki Doi

发明人： Jun Sato ,  Shinya Imano ,  Hiroyuki Doi

IPC分类号： C22C19/05 ,  C22C30/00

CPC分类号： C22C19/055

摘要： A nickel base alloy includes: by mass, 0.001 to 0.1% of carbon; 12 to 23% of chromium; 15 to 25% of cobalt; 3.5 to 5.0% of aluminum; 4 to 12% of molybdenum; 0.1 to 7.0% of tungsten; and a total amount of Ti, Ta and Nb being not more than 0.5%. A parameter Ps represented by a formula (1) shown below is 0.6 to 1.6, Ps=−7×[C]−0.1×[Mo]+0.5×[Al]  (1) where [C] indicates an amount of carbon; [Mo] indicates an amount of molybdenum; and [Al] indicates an amount of aluminum, by mass percent.

摘要翻译： 镍基合金包括：质量计，0.001〜0.1％的碳; 12〜23％的铬; 15〜25％的钴; 3.5〜5.0％的铝; 4〜12％的钼; 0.1〜7.0％的钨; Ti，Ta和Nb的总量不大于0.5％。 由下式（1）表示的参数Ps为0.6〜1.6，Ps = -7×[C] -0.1×[Mo] + 0.5×[Al]（1）其中，[C]表示碳数; [Mo]表示钼的量; 和[Al]表示铝的质量％。

公开(公告)号：US08512488B2

公开(公告)日：2013-08-20

申请号：US11836900

申请日：2007-08-10

申请人： Shinya Imano ,  Hirotsugu Kawanaka ,  Hiroyuki Doi ,  Tatsuya Takahashi ,  Tsukasa Azuma ,  Koji Kajikawa

发明人： Shinya Imano ,  Hirotsugu Kawanaka ,  Hiroyuki Doi ,  Tatsuya Takahashi ,  Tsukasa Azuma ,  Koji Kajikawa

IPC分类号： C22F1/10 ,  C22C19/05 ,  F01D5/14

CPC分类号： C22C19/05 ,  C22F1/10

摘要： An Ni—Fe based superalloy forging material including 30 to 40 wt % of Fe, 14 to 16 wt % of Cr, 1.2 to 1.7 wt % of Ti, 1.1 to 1.5 wt % of Al, 1.9 to 2.2 wt % of Nb, 0.05 wt % or less of C and the remainder of Ni and inevitable impurities is solution-treated and aged, and thereby γ′ phase (Ni3Al) having an initial mean particle size of about 50 to about 100 nm is precipitated. This superalloy is excellent in high-temperature strength and high-temperature ductility and can produce a large forged product of 10 ton or more. Therefore, this material is suitable for use as the material of a steam turbine rotor having a main steam temperature of 650° C. or more.

摘要翻译： 包含Fe：30〜40重量％，Cr：14〜16重量％，Ti：1.2〜1.7重量％，Al：1.1〜1.5重量％，Nb：1.9〜2.2重量％，Ni： 重量％以下的C和余量的Ni和不可避免的杂质进行溶液处理和老化，由此沉淀出初始平均粒度为约50〜约100nm的γ'相（Ni3Al）。 该超合金具有优异的高温强度和高温延展性，可生产10吨以上的大型锻造产品。 因此，该材料适用于主蒸汽温度为650℃以上的汽轮机转子的材料。

公开(公告)号：US08043068B2

公开(公告)日：2011-10-25

申请号：US11206131

申请日：2005-08-18

申请人： Shinya Imano ,  Hiroyuki Doi ,  Isao Takehara ,  Shigeo Sakurai

发明人： Shinya Imano ,  Hiroyuki Doi ,  Isao Takehara ,  Shigeo Sakurai

IPC分类号： F01D5/14

CPC分类号： C22C19/056 ,  C22C19/058 ,  C22F1/10 ,  F01D5/02 ,  F01D25/005

摘要： A Ni—Fe based super alloy having high strength and toughness at high temperatures even when used in high-temperature environments, and a process of producing the super alloy. A turbine disk using the super alloy, a process of producing the turbine disk, a turbine spacer using the super alloy, and a process of producing the turbine spacer, as well as a gas turbine are also provided. The Ni—Fe based super alloy contains not more than 0.03% by weight of C, 14-18% of Cr, 15-45% of Fe, 0.5-2.0% of Al, not more than 0.05% of N, 0.5 to 2.0% of Ti, 1.5-5.0% of Nb, and Ni as a main ingredient.

摘要翻译： 即使在高温环境下使用时，也能够在高温下具有高强度和韧性的Ni-Fe系超合金，以及超合金的制造方法。 还提供了使用超级合金的涡轮盘，制造涡轮盘的方法，使用超级合金的涡轮间隔件，以及制造涡轮间隔件的工艺以及燃气轮机。 Ni-Fe基超合金含有不超过0.03重量％的Cr，14-18％的Cr，15-45％的Fe，0.5-2.0％的Al，不超过0.05的N，0.5-2.0 Ti的％，Nb的1.5〜5.0％，Ni为主要成分。

公开(公告)号：US20100059146A1

公开(公告)日：2010-03-11

申请号：US12551884

申请日：2009-09-01

申请人： Jun Sato ,  Shinya Imano ,  Hiroyuki Doi

发明人： Jun Sato ,  Shinya Imano ,  Hiroyuki Doi

IPC分类号： C21D1/18 ,  C22C19/05 ,  C22C38/00 ,  C22C30/00

CPC分类号： C22C19/055 ,  B23K35/004 ,  B23K35/304 ,  B23K2101/001 ,  C22C19/056 ,  C22F1/10 ,  F01D5/063 ,  Y02T50/671

摘要： The present invention provides, in a γ′ phase precipitation strengthening type Ni-base alloy, an alloy excellent in heat treatment capability and weldability and suitable for joint with a ferritic steel. Further, the present invention provides a welded turbine rotor having the strength, ductility, and toughness simultaneously over the whole welded structure when a precipitation strengthening type Ni-base alloy having a heatproof temperature of 675° C. or higher is joined to a ferritic steel.A Ni-base alloy according to the present invention contains cobalt, chromium, aluminum, carbon, boron, and at least either tungsten or molybdenum with the remainder being nickel and inevitable impurities, having an alloy composition including 12 to 25 percent by mass of Co, 10 to 18 percent by mass of Cr, 2.0 to 3.6 percent by mass of Al, 0.01 to 0.15 percent by mass of C, 0.001 to 0.03 percent by mass of B, the total amount of tungsten and molybdenum being 5.0 to 10 percent by mass.A welded turbine rotor is structured by joining or building up by welding a second Ni-base alloy to a first Ni-base alloy that a γ′ phase solid solution temperature thereof is 900° C. or higher and a creep fracture strength at 675° C. is 100 MPa or more, and further welding a ferritic steel to the second Ni-base alloy. The second Ni-base alloy is a γ′ phase (Ni3Al) precipitation strengthening type Ni-base alloy, a γ′ phase solid solution temperature thereof is 850° C. or lower.

摘要翻译： 本发明在γ-相析出强化型Ni基合金中提供了热处理能力和焊接性优异的合金，适用于与铁素体钢接合的合金。 此外，本发明提供了一种在整个焊接结构中具有强度，延展性和韧性的焊接式涡轮转子，当耐热温度为675℃以上的析出强化型Ni基合金与铁素体钢 。 根据本发明的镍基合金包含钴，铬，铝，碳，硼，以及至少钨或钼，其余为镍和不可避免的杂质，其合金组成包含12〜25质量％的Co ，10〜18质量％的Cr，2.0〜3.6质量％的Al，0.01〜0.15质量％的C，0.001〜0.03质量％的B，钨和钼的总量为5.0〜10质量％ 质量 焊接的涡轮转子通过将第二Ni基合金焊接到γ'相固相温度为900℃以上的第一Ni基合金和675°的蠕变断裂强度下， C为100MPa以上，进一步将铁素体钢焊接到第二Ni基合金。 第二Ni基合金是γ'相（Ni3Al）析出强化型Ni基合金，γ'相固溶温度为850℃以下。

公开(公告)号：US20090123290A1

公开(公告)日：2009-05-14

申请号：US11356043

申请日：2006-02-17

申请人： Shinya Imano ,  Hiroyuki Doi ,  Kunihiro Ichikawa ,  Katsumi Tanaka

发明人： Shinya Imano ,  Hiroyuki Doi ,  Kunihiro Ichikawa ,  Katsumi Tanaka

IPC分类号： F01D5/28 ,  F04D29/02 ,  B23P6/00 ,  B23P15/04 ,  B23K35/22 ,  B23K35/40

CPC分类号： C22C19/056 ,  B23K9/044 ,  B23K35/30 ,  B23K35/304 ,  B23K2101/001 ,  B23P6/007 ,  C22C19/05 ,  C22C19/051 ,  Y10T29/49318 ,  Y10T29/49732

摘要： A Ni-based alloy member has resistance against grain boundary fracture, fatigue strength, and oxidation resistance at temperatures near 1000° C. or higher. The Ni-based alloy member includes a non-repaired region made of a Ni-based alloy base and a region repaired by welding, which is formed on the non-repaired region and which is made of a buildup-welded layer, the buildup-welded layer being made of a Ni-based alloy containing, by weight, 15% or less of Co, 18-22% of Cr, 0.8-2.0% of Al, 5.0% or less of Ta, 0.5% or less of Mo, 0.5% or less of Ti, 13-18% of W, 0.05-0.13% of C, 0.06% or less of Zr, 0.015% or less of B, 0.4-1.2% of Mn, and 0.1-0.3% of Si, the balance of the alloy being preferably essentially made of Ni.

摘要翻译： 镍基合金构件在接近1000℃或更高的温度下具有耐晶界破坏，疲劳强度和抗氧化性的能力。 Ni基合金构件包括由Ni基合金基底制成的未修补区域和通过焊接修补的区域，其形成在未修补区域上并且由堆焊层制成， 焊接层由含有重量比为15％以下的Co，18〜22％的Cr，0.8〜2.0％的Al，5.0％以下的Ta，0.5％以下的Mo， 0.5％以下的Ti，13〜18％的W，0.05〜0.13％的C，0.06％以下的Zr，0.015％以下的B，0.4〜1.2％的Mn和0.1〜0.3％的Si， 合金的平衡优选基本上由Ni制成。

公开(公告)号：US06493936B2

公开(公告)日：2002-12-17

申请号：US09766978

申请日：2001-01-23

申请人： Hiroyuki Doi ,  Mitsuo Kuriyama ,  Shigeyoshi Nakamura ,  Shinya Imano ,  Takeshi Onoda

发明人： Hiroyuki Doi ,  Mitsuo Kuriyama ,  Shigeyoshi Nakamura ,  Shinya Imano ,  Takeshi Onoda

IPC分类号： B23P1500

CPC分类号： C22C14/00 ,  C22C38/44 ,  C22C38/46 ,  C22C38/52 ,  C22F1/183 ,  F01D5/28 ,  F05D2220/31 ,  F05D2300/133 ,  Y10T29/49336 ,  Y10T29/49339

摘要： A steam turbine blade made of Ti-base alloy comprising an &agr;+&bgr; type phase in which a difference of a tensile strength is small between a blade portion and a dovetail portion, a tensile strength at a room temperature of the dovetail portion is equal to or more than 100 kg/mm2 and a suitable toughness is commonly provided together with a strength, as a steam turbine blade having a length of 43 inch or more, a method of manufacturing the same, a steam turbine power generating plant and a low pressure steam turbine. In the steam turbine blade having a blade portion and a plurality of fork type dovetails, wherein the blade is made of Ti-base alloy structured such that a length of the blade portion is equal to or more than 52 inches with respect to a rotational speed 3000 rpm of the blade or equal to or more than 43 inches with respect to the rotational speed 3600 rpm, and a tensile strength at a room temperature of the dovetail is equal to or more than 100 kg/mm2, preferably equal to or more than 110 kg/mm2 and equal to or more than 96 % of the tensile strength at the room temperature of the blade portion.

摘要翻译： 一种由钛基合金制成的汽轮机叶片，其包括在叶片部分和燕尾形部分之间拉伸强度差小的α+β型相，燕尾部分室温下的拉伸强度等于 或大于100kg / mm 2，并且合适的韧性通常与强度一起提供，作为具有43英寸或更长的长度的蒸汽轮机叶片，其制造方法，蒸汽轮机发电设备和低压 汽轮机。 在具有叶片部分和多个叉形燕尾形的汽轮机叶片中，其中叶片由Ti基合金制成，使得叶片部分的长度相对于转速等于或大于52英寸 相对于转速3600rpm等于或大于43英寸，燕尾榫的室温拉伸强度等于或大于100kg / mm2，优选等于或大于等于或大于 110kg / mm2，等于或大于在叶片部分的室温下的拉伸强度的96％。

公开(公告)号：US08813361B2

公开(公告)日：2014-08-26

申请号：US13211417

申请日：2011-08-17

申请人： Shinya Imano ,  Kunihiro Ichikawa ,  Hiroyuki Doi ,  Katsumi Tanaka

发明人： Shinya Imano ,  Kunihiro Ichikawa ,  Hiroyuki Doi ,  Katsumi Tanaka

IPC分类号： B21D53/78

CPC分类号： C22C19/051 ,  C22C19/05 ,  F01D5/005 ,  F05D2230/235 ,  F05D2230/80

摘要： In a gas turbine blade where a part of the γ′ phase precipitation strengthened type Ni-based alloy base material is composed of a weld metal, the weld metal is a Ni-based alloy containing Ta from 4.8 to 5.3 wt. %, Cr from 18 to 23 wt. %, Co from 12 to 17 wt. %, W from 14 to 18 wt. %, C from 0.03 to 0.1 wt. %, Mo from 1 to 2 wt. %, and Al of 1 wt. % or less, in which the oxygen content is 0 to 30 ppm, the Ti content from 0 to 0.1 wt. %, and the Re content from 0 to 0.5 wt. %. A blade base metal is manufactured by the step of stripping, the step of solution heat treatment where the γ′ phase is dissolved again, the step of welding in an inert gas chamber by a TIG method using a welding wire where the weld metal can be obtained, the step of HIP treatment at 1100° C. to 1150° C., and the step of an aging treatment at 835° C. to 855° C.

摘要翻译： 在γ相析出强化型Ni基合金基材的一部分由焊接金属构成的燃气轮机叶片中，焊接金属为含有4.8〜5.3重量％的Ta的Ni系合金。 ％，Cr为18〜23wt。 ％，Co为12〜17wt。 ％，W为14〜18wt。 ％，C为0.03〜0.1wt。 ％，Mo为1〜2wt。 ％，Al为1重量％。 ％以下，氧含量为0〜30ppm，Ti含量为0〜0.1重量％。 ％，Re含量为0〜0.5wt。 ％。 通过剥离步骤，再次溶解γ'相的固溶热处理步骤，通过TIG法使用焊丝在焊接金属可以焊接的焊丝的惰性气体室中进行焊接的工序来制造刀片母材 在1100℃至1150℃下进行HIP处理的步骤，以及在835℃至855℃的时效处理步骤。