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1.发明授权
公开(公告)号：US5753177A
公开(公告)日：1998-05-19
申请号：US522662
申请日：1995-09-01
申请人： Masahiko Morinaga , Yoshinori Murata , Shigeharu Ukai , Sakae Shikakura , Makoto Harada , Toshio Nishida
发明人： Masahiko Morinaga , Yoshinori Murata , Shigeharu Ukai , Sakae Shikakura , Makoto Harada , Toshio Nishida
CPC分类号： C22C30/00 , C22C19/056
摘要： A high-Ni austenitic stainless steel having swelling resistance, high-temperature creep strength, and phase stability under irradiation. The irradiation resistance and high-temperature strength of the high-Ni austenitic stainless steel are enhanced when it is composed of the following percentages by weight: Si, not exceeding 0.5 wt. %; Mn, not exceeding 1.0 wt. %; Cr, 13-18 wt. %; Ni, 30-50 wt. %; Mo+W=2.0-6.0 wt. %; Nb+V=0.1-0.8 wt. % (Nb/(Nb+V) �weight ratio!=0.20-0.85 �weight ratio!; N, 0.01-0.2 wt. %; and the residual consisting of Fe and unavoidable impurities.
摘要翻译： 具有耐溶蚀性，高温蠕变强度和照射下的相稳定性的高镍奥氏体不锈钢。 当由以下重量百分比组成时，高Ni奥氏体不锈钢的耐辐射性和高温强度得到提高：Si不超过0.5wt。 ％; Mn不超过1.0wt。 ％; Cr，13-18wt。 ％; Ni，30-50wt。 ％; Mo + W = 2.0-6.0重量％ ％; Nb + V = 0.1-0.8wt。 ％（Nb /（Nb + V）[重量比] = 0.20-0.85 [重量比]; N为0.01-0.2重量％;残余物由Fe和不可避免的杂质组成。
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公开(公告)号：US20110142711A1
公开(公告)日：2011-06-16
申请号：US13059774
申请日：2009-08-17
IPC分类号： C22C19/03
CPC分类号： C22C19/03 , C22C1/1084 , C22C19/007 , C22C32/001 , C22C32/0089
摘要： The present invention provides an oxide dispersion strengthened alloy in which even with aluminum contained, the particle diameter and dispersion spacing of the oxide are decreased, and the strength at high temperature, the high temperature oxidation and the corrosion resistance can be improved. An oxide dispersion strengthened alloy being a nickel-base alloy containing aluminum, hafnium, and yttrium oxide, wherein a complex oxide of the yttrium oxide and hafnium oxide is dispersed in a matrix of the nickel-base alloy, with the aluminum contained.
摘要翻译： 本发明提供了一种氧化物分散强化合金，其中即使含有铝，氧化物的粒径和分散间距也降低，并且可以提高高温强度，高温氧化和耐腐蚀性。 氧化物弥散强化合金是含有铝，铪和氧化钇的镍基合金，其中氧化钇和氧化铪的复合氧化物分散在镍基合金的基体中，并含有铝。
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3.发明申请公开(公告)号：US20050084405A1
公开(公告)日：2005-04-21
申请号：US10502257
申请日：2003-08-07
CPC分类号： C21D7/13 , C21D2211/004 , C21D2211/008 , C22C1/1084 , C22C33/0228 , C22C38/005 , C22C38/22 , C22C38/28
摘要： In an oxide dispersion strengthened martensitic steel which comprises, by % by weight, 0.05 to 0.25% C, 8.0 to 12.0% Cr, 0.1 to 4.0% W, 0.1 to 1.0% Ti, 0.1 to 0.5% Y2O3 with the balance being Fe and unavoidable impurities and in which Y2O3 particles are dispersed in the steel, by adjusting the Ti content within the range of 0.1 to 1.0% so that an excess oxygen content Ex.O in steel satisfies [0.22×Ti (% by weight)
摘要翻译： 在氧化物分散强化马氏体钢中，以重量％计含有0.05〜0.25％的C，8.0〜12.0％的Cr，0.1〜4.0％的W，0.1〜1.0％的Ti，0.1〜0.5％的Y 2， 其余为Fe和不可避免的杂质，其中Y 2 O 3 O 3颗粒分散在钢中，通过调节 Ti含量在0.1〜1.0％的范围内，使得钢中过量的氧含量Ex.O满足[0.22×Ti（重量％）
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4.发明授权Method of manufacturing oxide dispersion strengthened martensitic steel excellent in high-temperature strength having residual α-grains 有权制造具有优异的具有残留α粒子的高温强度的氧化物分散强化马氏体钢的方法公开(公告)号：US07273584B2
公开(公告)日：2007-09-25
申请号：US10928119
申请日：2004-08-30
CPC分类号： C21D6/002 , B22F2003/208 , B22F2003/248 , B22F2998/00 , B22F2998/10 , C21D1/28 , C21D2211/004 , C22C1/1094 , C22C33/0228 , C22C38/22 , C22C38/28 , C22C1/1084 , B22F9/04 , B22F3/20 , B22F3/24
摘要： An oxide dispersion strengthened martensitic steel excellent in high-temperature strength having residual α-grains can be manufactured by a method comprising mixing either element powders or alloy powders and a Y2O3 powder; subjecting the resulting mixed powder to mechanical alloying treatment; solidifying the resulting alloyed powder by hot extrusion; and subjecting the resulting extruded solidified material to final heat treatment involving normalizing and tempering heat treatment to thereby manufacture an oxide dispersion strengthened martensitic steel in which Y2O3 particles are dispersed in the steel, wherein αto γtransformation is not allowed to occur during the described hot extrusion and the proportion of residual α-grains in which oxide particles are finely dispersed in high density is increased by controlling the mixture ratio of the powders for the mechanical alloying treatment.
摘要翻译： 可以通过以下方法来制造具有残留α-晶粒的高温强度优异的氧化物分散强化马氏体钢，即，将元素粉末或合金粉末与Y 2 O 3 O 3 >粉末; 将所得混合粉末进行机械合金化处理; 通过热挤压固化所得合金粉末; 对所得到的挤出固化材料进行最终热处理，使其进行正火和回火热处理，从而制造分散有Y 2 O 3 3颗粒的氧化物分散强化马氏体钢 通过控制用于机械合金化处理的粉末的混合比例，可以提高在所述热挤压期间不发生碱金属转变的钢，并且通过控制用于机械合金化处理的粉末的混合比例来增加氧化物颗粒以高密度精细分散的残留α-晶粒的比例。
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5.发明授权Method for producing dispersed oxide reinforced ferritic steel having coarse grain structure and being excellent in high temperature creep strength 有权具有粗晶粒结构，高温蠕变强度优异的分散氧化物强化铁素体钢的制造方法公开(公告)号：US07361235B2
公开(公告)日：2008-04-22
申请号：US10501673
申请日：2003-08-07
CPC分类号： C22C32/0026 , B22F2009/041 , B22F2998/10 , C21D6/002 , C21D2211/004 , C22C33/0228 , C22C38/002 , C22C38/005 , C22C38/22 , C22C38/28 , B22F9/04 , B22F3/20 , B22F3/24
摘要： A method of manufacturing an oxide dispersion strengthened ferritic steel excellent in high-temperature creep strength having a coarse grain structure. The method comprises mixing alloy powders and an Y2O3 powder, subjecting the mixed powder to mechanical alloying treatment, solidifying the alloyed powder by hot extrusion, and subjecting the extruded solidified material to final heat treatment involving heating to and holding at a temperature of not less than the Ac3 transformation point and slow cooling at a rate of not more than a ferrite-forming critical rate which comprises, 0.05-0.25% C, 8.0-12.0% Cr, 0.1-4.0% W, 0.1-1.0% Ti, 0.1-0.5% Y2O3 by weight, with the balance being Fe. In this method, by using a TiO2 powder as a Ti component to be mixed at the mechanical alloying treatment or by adding a Fe2O3 powder, the bonding of Ti with C is suppressed, and the C concentration in the matrix does not decrease.
摘要翻译： 一种具有粗晶粒结构的高温蠕变强度优异的氧化物弥散强化铁素体钢的制造方法。 该方法包括混合合金粉末和Y 2 O 3 O 3粉末，使混合粉末进行机械合金化处理，通过热挤压固化合金粉末，并将挤出的固化的 材料进行最终热处理，包括加热至并保持在不低于3×3相变点的温度，并以不超过铁素体形成临界速率的速率缓慢冷却，该速率包括0.05- 0.25％C，8.0-12.0％Cr，0.1-4.0％W，0.1-1.0％Ti，0.1-0.5％Y 2 O 3重量％，余量 是铁 在该方法中，通过在机械合金化处理中使用TiO 2粉末作为待混合的Ti成分，或者通过添加Fe 2 O 3 O 3 >粉末，Ti与C的结合被抑制，并且基体中的C浓度不降低。
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公开(公告)号：US07141209B2
公开(公告)日：2006-11-28
申请号：US10669685
申请日：2003-09-25
IPC分类号： B22F3/24
CPC分类号： C22C38/22 , B22F3/16 , B22F2998/10 , C21D8/105 , C21D2211/004 , C22C32/0026 , C22C38/28 , C22C1/05 , B22F3/18
摘要： There is provided a method for producing oxide dispersion strengthened ferritic steel tube by fabricating a raw tube by mixed sintering of a metal powder and an oxide powder and producing a tube of the desired shape by repeating cold rolling and heat treatment for a total of three times or more. The method comprises performing each of the intermediate heat treatments during the cold rolling by a two-step heat treatment consisting of a first step heat treatment of 1100° C. or lower and a second step heat treatment of 1100 to 1250° C. and higher than the first step temperature, and performing the final heat treatment at 1100° C. or higher.
摘要翻译： 提供了一种通过用金属粉末和氧化物粉末的混合烧结制造原料管来生产氧化物分散强化铁素体钢管的方法，并通过重复冷轧和热处理三次制成所需形状的管 或者更多。 该方法包括通过由1100℃以下的第一阶段热处理和1100〜1250℃以上的第二阶段热处理构成的两步热处理进行冷轧中的各中间热处理 并且在1100℃以上进行最终的热处理。
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7.发明授权公开(公告)号：US07037464B2
公开(公告)日：2006-05-02
申请号：US10502257
申请日：2003-08-07
CPC分类号： C21D7/13 , C21D2211/004 , C21D2211/008 , C22C1/1084 , C22C33/0228 , C22C38/005 , C22C38/22 , C22C38/28
摘要： In an oxide dispersion strengthened martensitic steel which comprises, by % by weight, 0.05 to 0.25% C, 8.0 to 12.0% Cr, 0.1 to 4.0% W, 0.1 to 1.0% Ti, 0.1 to 0.5% Y2O3 with the balance being Fe and unavoidable impurities and in which Y2O3 particles are dispersed in the steel, by adjusting the Ti content within the range of 0.1 to 1.0% so that an excess oxygen content Ex.O in steel satisfies [0.22×Ti (% by weight)
摘要翻译： 在氧化物分散强化马氏体钢中，以重量％计含有0.05〜0.25％的C，8.0〜12.0％的Cr，0.1〜4.0％的W，0.1〜1.0％的Ti，0.1〜0.5％的Y 2， 其余为Fe和不可避免的杂质，其中Y 2 O 3 O 3颗粒分散在钢中，通过调节 Ti含量在0.1〜1.0％的范围内，使得钢中过量的氧含量Ex.O满足[0.22×Ti（重量％）
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8.发明申请Method of manufacturing oxide dispersion strengthened martensitic steel excellent in high-temperature strength having residual alpha-grains 有权制造具有优异的具有残留α粒子的高温强度的氧化物分散强化马氏体钢的方法公开(公告)号：US20050084406A1
公开(公告)日：2005-04-21
申请号：US10928119
申请日：2004-08-30
CPC分类号： C21D6/002 , B22F2003/208 , B22F2003/248 , B22F2998/00 , B22F2998/10 , C21D1/28 , C21D2211/004 , C22C1/1094 , C22C33/0228 , C22C38/22 , C22C38/28 , C22C1/1084 , B22F9/04 , B22F3/20 , B22F3/24
摘要： An oxide dispersion strengthened martensitic steel excellent in high-temperature strength having residual α-grains can be manufactured by a method comprising mixing either element powders or alloy powders and a Y2O3 powder; subjecting the resulting mixed powder to mechanical alloying treatment; solidifying the resulting alloyed powder by hot extrusion; and subjecting the resulting extruded solidified material to final heat treatment involving normalizing and tempering heat treatment to thereby manufacture an oxide dispersion strengthened martensitic steel which comprises, as expressed by % by weight, 0.05 to 0.25% C, 8.0 to 12.0% Cr, 0.1 to 4.0% W, 0.1 to 1.0% Ti, 0.1 to 0.5% Y2O3 with the balance being Fe and unavoidable impurities and in which Y2O3 particles are dispersed in the steel, wherein α to γ transformation is not allowed to occur during the described hot extrusion and the proportion of residual α-grains in which oxide particles are finely dispersed in high density is increased by controlling the mixture ratio of the powders for the mechanical alloying treatment so that an excess oxygen content in the steel (a value obtained by subtracting an oxygen content in Y2O3 from an oxygen content in steel) satisfies “0.22×Ti
摘要翻译： 可以通过以下方法来制造具有残留α-晶粒的高温强度优异的氧化物分散强化马氏体钢，即，将元素粉末或合金粉末与Y 2 O 3 O 3 >粉末; 将所得混合粉末进行机械合金化处理; 通过热挤压固化所得合金粉末; 对所得到的挤出固化材料进行最终热处理，使其进行正火和回火热处理，从而制造氧化物分散强化马氏体钢，其含量为0.05〜0.25％，C：8.0〜12.0％，Cr：0.1〜 4.0％W，0.1〜1.0％Ti，0.1〜0.5％Y 2 O 3 3，余量为Fe和不可避免的杂质，其中Y 2 < 在所述钢中分散有3个以上的颗粒，其中在所述热挤压期间不允许发生α至γ相变，并且将氧化物颗粒细分散在其中的残留α-晶粒的比例高 通过控制用于机械合金化处理的粉末的混合比例来增加密度，使得钢中的过量氧含量（通过减去Y 2 O 3中的氧含量获得的值< / SUB>从钢中的氧含量）满足“0.22×Ti
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9.发明申请Method for producing dispersed oxide reinforced ferritic steel having coarse grain structure and being excellent in high temperature creep strength 有权具有粗晶粒结构，高温蠕变强度优异的分散氧化物强化铁素体钢的制造方法公开(公告)号：US20050042127A1
公开(公告)日：2005-02-24
申请号：US10501673
申请日：2003-08-07
CPC分类号： C22C32/0026 , B22F2009/041 , B22F2998/10 , C21D6/002 , C21D2211/004 , C22C33/0228 , C22C38/002 , C22C38/005 , C22C38/22 , C22C38/28 , B22F9/04 , B22F3/20 , B22F3/24
摘要： A method of manufacturing an oxide dispersion strengthened ferritic steel excellent in high-temperature creep strength having a coarse grain structure is provided. This method comprises mixing either element powders or alloy powders and a Y2O3 powder, subjecting the mixed powder to mechanical alloying treatment, solidifying the resulting alloyed powder by hot extrusion, and subjecting the resulting extruded solidified material to final heat treatment involving heating to and holding at a temperature of not less than the AC3 transformation point and slow cooling at a rate of not more than a ferrite-forming critical rate to thereby manufacture an oxide dispersion strengthened ferritic steel which comprises, as expressed by % by weight, 0.05 to 0.25% C, 8.0 to 12.0% Cr, 0.1 to 4.0% W, 0.1 to 1.0% Ti, 0.1 to 0.5% Y2O3 with the balance being Fe and unavoidable impurities and in which Y2O3 particles are dispersed in the steel. In this method, by using a TiO2 powder as an element powder of a Ti component to be mixed at the mechanical alloying treatment or by additionally adding an Fe2O3 powder, the bonding of Ti with C is suppressed so that the C concentration in the matrix does not decrease. As a result, α to γ transformation during the heat treatment is ensured and it is possible to manufacture an oxide dispersion strengthened ferritic steel having a coarse and equiaxed grain structure effective in improving high-temperature creep strength.
摘要翻译： 提供了具有粗晶粒结构的高温蠕变强度优异的氧化物弥散强化铁素体钢的制造方法。 该方法包括将元素粉末或合金粉末和Y2O3粉末混合，使混合粉末进行机械合金化处理，通过热挤压固化所得合金粉末，并将所得挤出的固化材料进行最终热处理，包括加热并保持在 不低于AC3相变点的温度，并且以不大于铁素体形成临界速率的速度缓慢冷却，从而制造氧化物分散强化铁素体钢，其包含如重量％0.05至0.25％C ，8.0〜12.0％的Cr，0.1〜4.0％的W，0.1〜1.0％的Ti，0.1〜0.5％的Y2O3，余量为Fe和不可避免的杂质，Y2O3分散在钢中。 在该方法中，通过使用TiO 2粉末作为在机械合金化处理中混合的Ti成分的元素粉末，或通过添加Fe 2 O 3粉末，可以抑制Ti与C的结合，使得基体中的C浓度 不减少 结果，确保了热处理期间的α至γ相变，并且可以制造具有有效提高高温蠕变强度的粗等轴晶粒结构的氧化物分散强化铁素体钢。
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公开(公告)号：US06250125B1
公开(公告)日：2001-06-26
申请号：US09526480
申请日：2000-03-15
申请人： Shigeharu Ukai , Shunji Mizuta , Tsunemitsu Yoshitake , Shigeki Hagi , Noriaki Hirohata , Katsuhiro Abe , Takanari Okuda
发明人： Shigeharu Ukai , Shunji Mizuta , Tsunemitsu Yoshitake , Shigeki Hagi , Noriaki Hirohata , Katsuhiro Abe , Takanari Okuda
IPC分类号： B21B2102
CPC分类号： B21B21/02 , B21B17/06 , B21B21/005
摘要： A method of producing an iron-based dispersion-strengthened alloy tube (2-1) by utilizing a rolling machine having grooved rolls (5, 5-1) and a mandrel (9)for forming the tube (2-1) from a raw rolling tube (2). In the method, a length of contact between a rolling surface (6, 6-1) of a caliber formed by the grooved rolls and an outer circumference of the rolling tube is set to be 0.9 times or more of a circumferential length of the rolling tube over the entire area of the rolling region. It is preferred that the method be performed by a Pilger type rolling machine.
摘要翻译： 通过利用具有开槽辊（5,5-1）的轧制机和用于从管（2-1）形成管（2-1）的心轴（9）从铁基分散强化合金管（2-1）制造铁基分散强化合金管 生轧管（2）。 在该方法中，由带槽辊形成的口径的滚动面（6,6-1）与轧制管的外周之间的接触长度设定为轧制的圆周长度的0.9倍以上 在轧制区域的整个区域上管。 该方法优选由皮尔格式滚压机进行。
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