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1. 发明授权

US06440234B1 Martensitic stainless steel products 有权
标题翻译：马氏体不锈钢制品
公开(公告)号：US06440234B1
公开(公告)日：2002-08-27
申请号：US09453714
申请日：1999-12-03
申请人： Hisashi Amaya , Toshiro Anraku , Yasuyoshi Hidaka
发明人： Hisashi Amaya , Toshiro Anraku , Yasuyoshi Hidaka
IPC分类号： C22C3818
CPC分类号： C21D7/06 , Y10S148/909
摘要： A martensitic stainless steel product having a chromium content of 9 to 15% by weight and a surface from which mill scales generated during production are removed by a shot blasting. The surface satisfies that, when a color image of the surface taken with 640×480 pixels is analyzed on blue color and a histogram of the pixel numbers and the tones divided into 0 to 255 classes is obtained, a relationship between the maximum frequency Yp and the tone value Xp at which Yp is counted satisfies an inequality, 800Xp−Yp−27000>0. This steel product is superior in weatherability under atmospheric environments, and also superior in sulfide stress cracking resistance under environments containing hydro-sulfide.
摘要翻译：通过喷丸除去铬含量为9〜15重量％的马氏体不锈钢产品和在生产过程中产生的氧化皮的表面。表面满足当以蓝色分析以640×480像素拍摄的表面的彩色图像，并且获得被划分为0至255类的像素数和色调的直方图时，最大频率Yp和色调之间的关系计数Yp的值Xp满足不等式，800Xp-Yp-27000> 0。该钢制品在大气环境下的耐候性优异，在含硫化氢的环境下，耐硫化物应力开裂性也优异。

2. 发明授权

US06210806B1 Martensitic stainless steel having oxide scale layers 有权
标题翻译：具有氧化皮层的马氏体不锈钢
公开(公告)号：US06210806B1
公开(公告)日：2001-04-03
申请号：US09253140
申请日：1999-02-19
申请人： Yasuyoshi Hidaka , Toshiro Anraku , Hisashi Amaya
发明人： Yasuyoshi Hidaka , Toshiro Anraku , Hisashi Amaya
IPC分类号： B32B900
CPC分类号： C21D8/105 , C21D6/002 , C22C38/18
摘要： The martensitic stainless steel product comprises a base steel and a dual oxide scale layer on a surface of the steel, wherein the dual scale layer includes an inner scale layer containing FeCr2O4 and Fe3O4 as main components and an outer scale layer containing Fe3O4 as a main component and having an outermost Fe2O3 layer; or includes an inner scale layer containing FeCr2O4 and FeO as main components and an outer scale layer containing FeO and Fe3O4 as main components and having an outermost Fe2O3 layer. If the product is a steel pipe, it exhibits excellent corrosion resistance when used for an oil country tubular goods or line pipe.
摘要翻译：所述马氏体系不锈钢制品在钢表面上含有基础钢和双氧化皮层，其中，所述双层氧化层包括含有FeCr 2 O 4和Fe 3 O 4作为主要成分的内标层和含有Fe 3 O 4作为主要成分的外标层并具有最外层的Fe 2 O 3层; 或包含含有FeCr 2 O 4和FeO作为主要成分的内层，以及含有FeO和Fe 3 O 4作为主要成分并具有最外层的Fe 2 O 3层的外层。如果产品是钢管，则在用于油罐管或管线管时表现出优异的耐腐蚀性。

3. 发明申请

US20130312880A1 DUPLEX STAINLESS STEEL AND PRODUCTION METHOD THEREFOR 有权
标题翻译：双相不锈钢及其生产方法
公开(公告)号：US20130312880A1
公开(公告)日：2013-11-28
申请号：US13984314
申请日：2012-02-10
申请人： Daisuke Motoya , Masahiko Hamada , Hisashi Amaya , Hiroyuki Nagayama , Kenta Yamada
发明人： Daisuke Motoya , Masahiko Hamada , Hisashi Amaya , Hiroyuki Nagayama , Kenta Yamada
IPC分类号： C22C38/58 , C22C38/54 , C22C38/46 , C22C38/00 , C22C38/42 , C22C38/04 , C22C38/02 , C21D6/00 , C22C38/44
CPC分类号： C21D6/005 , C21D6/004 , C21D6/008 , C21D2211/005 , C22C1/02 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/54 , C22C38/58
摘要： Provided is a duplex stainless steel having a high strength and a high toughness. A stainless steel according to the present invention includes: a chemical composition containing, in mass percent, C: at most 0.030%, Si: 0.20 to 1.00%, Mn: at most 8.00%, P: at most 0.040%, S: at most 0.0100%, Cu: more than 2.00% and at most 4.00%, Ni: 4.00 to 8.00%, Cr: 20.0 to 30.0%, Mo: at least 0.50% and less than 2.00%, N: 0.100 to 0.350%, and sol. Al: at most 0.040%, the balance being Fe and impurities; and a structure, wherein a rate of ferrite in the structure is 30 to 70%, and a hardness of the ferrite in the structure is at least 300 Hv10gf.
摘要翻译：提供具有高强度和高韧性的双相不锈钢。根据本发明的不锈钢包括：以质量％计含有C：至多0.030％Si：0.20至1.00％，Mn：至多8.00％，P：至多0.040％，S：at 最大0.0100％，Cu：大于2.00％，至多4.00％，Ni：4.00〜8.00％，Cr：20.0〜30.0％，Mo：0.50％以上且2.00％以下，N：0.100〜0.350％溶胶 Al：0.040％以下，余量为Fe和杂质; 以及结构中的铁素体的比率为30〜70％，结构中的铁素体的硬度为300Hv×10gf以上的结构。

4. 发明授权

US08157930B2 Martensitic stainless steel 有权
标题翻译：马氏体不锈钢
公开(公告)号：US08157930B2
公开(公告)日：2012-04-17
申请号：US10798855
申请日：2004-03-12
申请人： Hisashi Amaya , Kunio Kondo , Masakatsu Ueda , Keiichi Nakamura , Takahiro Kushida , Kazuyo Kushida, legal representative
发明人： Hisashi Amaya , Kunio Kondo , Masakatsu Ueda , Keiichi Nakamura , Takahiro Kushida
IPC分类号： C22C38/22 , C21D8/02
CPC分类号： C22C38/44 , C22C38/001 , C22C38/002 , C22C38/04 , C22C38/42
摘要： A martensitic stainless steel comprising C: 0.01-0.10%, Si: 0.05-1.0%, Mn: 0.05-1.5%, P: not more than 0.03%, S: not more than 0.01%, Cr: 9-15%, Ni: 0.1-4.5%, Al: not more than 0.05% and N: not more than 0.1% in mass %, and further comprising at least one of Cu: 0.05-5% and Mo: 0.05-5%, the residual being Fe and impurities, is provided, wherein the contents of Cu and Mo satisfy the following formula (a) or (b), 0.2%≦Mo+Cu/4≦5% (a) 0.55%≦Mo+Cu/4≦5% (b) and wherein the hardness is 30-45 in HRC and the carbide amount in grain boundaries of the prior austenite is not more than 0.5 volume %. The marensitic stainless steel has excellent properties regarding the sulfide stress cracking resistance, the resistance to corrosive wear and the localized corrosion.
摘要翻译：一种马氏体不锈钢，其包含C：0.01〜0.10％，Si：0.05〜1.0％，Mn：0.05〜1.5％，P：0.03％以下，S：0.01％以下，Cr：9〜15％，Ni ：0.1-4.5％，Al：0.05％以下，N：0.1质量％以下，进一步含有Cu：0.05〜5％和Mo：0.05〜5％中的至少一种，残留物为Fe 提供Cu和Mo的含量满足下式（a）或（b）：0.2％＆lt; NlE; Mo + Cu / 4＆nlE; 5％（a）0.55％＆nlE; Mo + Cu / 4＆ 5％（b），硬度在HRC中为30-45，前奥氏体的晶界中的碳化物量不大于0.5体积％。锰矿不锈钢具有耐硫化物应力开裂性，耐腐蚀性和局部腐蚀性等优异性能。

5. 发明申请

US20060174979A1 Martensitic stainless steel 有权
标题翻译：马氏体不锈钢
公开(公告)号：US20060174979A1
公开(公告)日：2006-08-10
申请号：US11335676
申请日：2006-01-20
申请人： Kunio Kondo , Hisashi Amaya
发明人： Kunio Kondo , Hisashi Amaya
IPC分类号： C22C38/22
CPC分类号： C22C38/42 , C22C38/02 , C22C38/04 , C22C38/44
摘要： A martensitic stainless steel having a resistance to sulfide stress corrosion cracking superior to Super 13 Cr steel and having a strength and corrosion resistance comparable to dual phase stainless steels has a chemical composition consisting essentially of, in mass %, C: 0.001-0.1%, Si: 0.05-1.0%, Mn: 0.05-2.0%, P: at most 0.025%, S: at most 0.010%, Cr: 11-18%, Ni: 1.5-10%, sol. Al: 0.001-0.1%, N: at most 0.1%, O: at most 0.01%, Cu: 0-5%, solid solution Mo: 3.5-7%, the composition satisfying the following Equation (1), optionally at least one element selected from at least one of the following Groups A-C, and a remainder of Fe and impurities and undissolved Mo, if undissolved Mo is present. Ni-bal.=30(C+N)+0.5(Mn+Cu)+Ni+8.2−1.1(Cr+Mo+1.5Si)≧−4.5 Equation (1) Group A—W: 0.2-5% Group B—V: 0.001-0.50%, Nb: 0.001-0.50%, Ti: 0.001-0.50%, and Zr: 0.001-0.50% Group C—Ca: 0.0005-0.05%, Mg: 0.0005-0.05%, REM: 0.0005-0.05%, and B: 0.0001-0.01%
摘要翻译：具有优于超级13Cr钢的具有耐硫化应力腐蚀开裂性且具有与双相不锈钢相当的强度和耐腐蚀性的马氏体不锈钢的化学成分基本上以质量％计含有C：0.001-0.1％ Si：0.05〜1.0％，Mn：0.05〜2.0％，P：0.025％以下，S：0.010％以下，Cr：11〜18％，Ni：1.5〜10％ Al：0.001-0.1％，N：0.1％以下，O：0.01％以下，Cu：0-5％，固溶Mo：3.5〜7％，满足下述式（1）的组成，选自以下组AC中的至少一个的元素，以及余量的Fe和杂质以及未溶解的Mo，如果不溶解的Mo存在。 Ni-bal = 30（C + N）+0.5（Mn + Cu）+ Ni + 8.2-1.1（Cr + Mo），在线式公式描述=“In-line formula”end =“lead” 组合AW：0.2-5％组BV：0.001-0.50％，Nb（0.51Si））= - 4.5方程式（1）<？in-line-formula description =“In-line Formulas”end =“tail” ：0.001-0.50％，Ti：0.001-0.50％，Zr：0.001-0.50％C-Ca：0.0005-0.05％，Mg：0.0005-0.05％，REM：0.0005-0.05％，B：0.0001-0.01 ％

6. 发明授权

US09090957B2 Martensitic stainless steel oil country tubular good 有权
标题翻译：马氏体不锈钢油管状管状好
公开(公告)号：US09090957B2
公开(公告)日：2015-07-28
申请号：US11792524
申请日：2004-12-07
申请人： Hisashi Amaya , Kunio Kondo , Masakatsu Ueda
发明人： Hisashi Amaya , Kunio Kondo , Masakatsu Ueda
IPC分类号： C22C38/18 , C22C38/00 , C21D8/10 , C21D9/08 , C22C38/02 , C22C38/20 , C22C38/22 , C22C38/38 , C22C38/58
CPC分类号： C22C38/00 , C21D8/10 , C21D8/105 , C21D9/08 , C21D2211/008 , C22C38/001 , C22C38/02 , C22C38/18 , C22C38/20 , C22C38/22 , C22C38/38 , C22C38/58
摘要： A martensitic stainless steel oil country tubular good contains, by mass, 0.005% to 0.1% C, 0.05% to 1% Si, 1.5% to 5% Mn, at most 0.05% P, at most 0.01% S, 9% to 13% Cr, at most 0.5% Ni, at most 2% Mo, at most 2% Cu, 0.001% to 0.1% Al, and 0.001% to 0.1% N, with the balance being Fe and impurities, and the pipe has a Cr-depleted region under the surface. The martensitic stainless steel oil country tubular good according to the present invention does not have a passive film on the surface and corrodes wholly at low speed. In addition, the Ni content is reduced, which allows uneven corrosion to be prevented. Therefore, SCC can be prevented from being generated in spite of the presence of a Cr-depleted region.
摘要翻译：马氏体不锈钢油管状良好的质量含有0.005〜0.1％的C，0.05〜1％的Si，1.5〜5％的Mn，至多0.05％的P，最多0.01％的S，9〜13 ％Cr，最多0.5％Ni，至多2％Mo，最多2％Cu，0.001％至0.1％Al和0.001％至0.1％N，余量为Fe和杂质，管道为Cr - 表面下方的剥离区域。根据本发明的马氏体不锈钢油管状管状体在表面上不具有钝化膜并且完全以低速腐蚀。另外，Ni含量降低，能够防止不均匀的腐蚀。因此，尽管存在Cr-贫化区域，也可以防止产生SCC。

7. 发明申请

US20130315776A1 DUPLEX STAINLESS STEEL 审中-公开
标题翻译：双相不锈钢
公开(公告)号：US20130315776A1
公开(公告)日：2013-11-28
申请号：US13984327
申请日：2012-02-10
申请人： Kenta Yamada , Hiroyuki Nagayama , Masahiko Hamada , Daisuke Motoya , Hisashi Amaya
发明人： Kenta Yamada , Hiroyuki Nagayama , Masahiko Hamada , Daisuke Motoya , Hisashi Amaya
IPC分类号： C22C38/58 , C22C38/46 , C22C38/00 , C22C38/42 , C22C38/04 , C22C38/02 , C22C38/54 , C22C38/44
CPC分类号： C22C38/005 , C21D6/004 , C21D6/005 , C21D7/13 , C21D8/0226 , C21D2211/001 , C21D2211/004 , C21D2211/005 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/54 , C22C38/58
摘要： A duplex stainless steel, which can suppress precipitation of a σ phase under high heat input welding, is excellent in SCC resistance under high-temperature chloride environments and has a high strength. The duplex stainless steel includes a chemical composition containing, in mass percent, C: at most 0.030%, Si: 0.20 to 1.00%, Mn: at most 8.00%, P: at most 0.040%, S: at most 0.0100%, Cu: more than 2.00% and at most 4.00%, Ni: 4.00 to 8.00%, Cr: 20.0 to 28.0%, Mo: 0.50 to 2.00%, N: 0.100 to 0.350%, and sol. Al: at most 0.040%, the balance being Fe and impurities, and satisfying Expression (1) and Expression (2); a structure having a ferrite rate of at least 50%; and a yield strength of at least 550 MPa or more: 2.2Cr+7Mo+3Cu>66 (1) Cr+11Mo+10Ni
摘要翻译：可以抑制高热输入焊接下的σ相析出的双相不锈钢在高温氯化物环境下的SCC电阻优异，强度高。双相不锈钢包括以质量％计含有C：0.030％以下，Si：0.20〜1.00％，Mn：8.00％以下，P：0.040％以下，S：0.0100％以下的化学组成：2.00％以上4.00％以下，Ni：4.00〜8.00％，Cr：20.0〜28.0％，Mo：0.50〜2.00％，N：0.100〜0.350％。 Al：0.040％以下，余量为Fe和杂质，满足式（1）和式（2）。铁素体率至少为50％的结构; 屈服强度为至少550MPa以上：2.2Cr + 7Mo + 3Cu> 66（1）Cr + 11Mo + 10Ni <12（Cu + 30N）（2）

8. 发明授权

US08163233B2 Martensitic stainless steel for welded structures 有权
标题翻译：用于焊接结构的马氏体不锈钢
公开(公告)号：US08163233B2
公开(公告)日：2012-04-24
申请号：US12379724
申请日：2009-02-27
申请人： Hisashi Amaya , Kazuhiro Ogawa , Akira Taniyama , Masakatsu Ueda , Hideki Takabe
发明人： Hisashi Amaya , Kazuhiro Ogawa , Akira Taniyama , Masakatsu Ueda , Hideki Takabe
IPC分类号： C22C38/44 , C22C38/42
CPC分类号： C22C38/02 , C22C38/005 , C22C38/04 , C22C38/06 , C22C38/40
摘要： A martensitic stainless steel for welded structures including by mass %, C: 0.001 to 0.05%, Si: 0.05 to 1%, Mn: 0.05 to 2%, P: 0.03% or less, REM: 0.0005 to 0.1%, Cr: 8 to 16%, Ni: 0.1 to 9% and sol. Al: 0.001 to 0.1%; and further including one or more elements selected from among Ti: 0.005 to 0.5%, Zr: 0.005 to 0.5%, Hf: 0.005 to 0.5%, V: 0.005 to 0.5% and Nb: 0.005 to 0.5%; and O: 0.005% or less, N: 0.1% or less, with the balance being Fe and impurities; and the P and REM content satisfies: P≦0.6×REM. This steel possesses excellent SCC (stress corrosion cracking) resistance in welded sections in Sweet environments.
摘要翻译：焊接结构的马氏体系不锈钢，以质量％计，C：0.001〜0.05％，Si：0.05〜1％，Mn：0.05〜2％，P：0.03％以下，REM：0.0005〜0.1％，Cr：8 至16％，Ni：0.1〜9％，溶胶。 Al：0.001〜0.1％进一步包括选自Ti：0.005〜0.5％，Zr：0.005〜0.5％，Hf：0.005〜0.5％，V：0.005〜0.5％，Nb：0.005〜0.5％的一种或多种元素; O：0.005％以下，N：0.1％以下，余量为Fe和杂质; P和REM含量满足：P＆nlE; 0.6×REM。这种钢在甜蜜环境中的焊接部分具有优异的SCC（应力腐蚀开裂）性。

9. 发明申请

US20100170320A1 METHOD FOR MANUFACTURING A HIGH ALLOY PIPE 有权
标题翻译：制造高合金管的方法
公开(公告)号：US20100170320A1
公开(公告)日：2010-07-08
申请号：US12650585
申请日：2009-12-31
申请人： Masayuki Sagara , Hitoshi Suwabe , Hisashi Amaya , Shigemitsu Kimura , Masaaki Igarashi
发明人： Masayuki Sagara , Hitoshi Suwabe , Hisashi Amaya , Shigemitsu Kimura , Masaaki Igarashi
IPC分类号： B21C37/06
CPC分类号： C22C38/02 , C21D6/004 , C21D8/10 , C21D8/105 , C21D9/14 , C22C38/04 , C22C38/42 , C22C38/44
摘要： A method for manufacturing a high alloy pipe comprises hot working, a high alloy material pipe having controlled amounts of C, Si, Mn, P, S, Ni, Cr, Mo, Cu, Al, N, O, and optionally Ca, Mg, and rare earth elements, with the balance Fe. The pipe composition satisfies the formula N×O≦0.001. The pipe is subjected to cold working to form the high alloy pipe, wherein the final cold working process is performed under the condition that a working ratio Rd in the reduction of area satisfies 15≦Rd(%)≦370×(C+N), where N, O and C are the contents (by mass percent) of the respective elements, and Rd is the working ratio (%) in the reduction of area. The pipe has an excellent ductility and an excellent corrosion resistance when cold working is performed to obtain a high strength after pipe-making.
摘要翻译：一种制造高合金管的方法包括热加工，具有受控量的C，Si，Mn，P，S，Ni，Cr，Mo，Cu，Al，N，O以及任选的Ca，Mg的高合金材料管，稀土元素，余量为Fe。管道组成满足公式N×O＆nlE; 0.001。管道进行冷加工以形成高合金管，其中在减少面积的加工率Rd满足15＆lt; nlE的条件下进行最终冷加工工艺; Rd（％）＆nlE; 370×（C + N ），其中N，O和C是各元素的含量（按质量百分比），Rd是面积减少的加工率（％）。在进行冷加工以获得制管后的高强度时，该管具有优良的延展性和优异的耐腐蚀性。

10. 发明申请

US20060201587A1 Welded structure having improved resistance to stress corrosion cracking 有权
标题翻译：具有改善的耐应力腐蚀开裂性的焊接结构
公开(公告)号：US20060201587A1
公开(公告)日：2006-09-14
申请号：US11366442
申请日：2006-03-03
申请人： Hisashi Amaya , Kazuhiro Ogawa , Kunio Kondo , Masayuki Sagara , Hiroyuki Hirata
发明人： Hisashi Amaya , Kazuhiro Ogawa , Kunio Kondo , Masayuki Sagara , Hiroyuki Hirata
IPC分类号： C22C38/40
CPC分类号： B23K9/0286 , B23K9/16 , B23K9/23 , B23K35/3086 , B23K2101/10 , B23K2103/05 , C21D9/50 , C22C38/004 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/40 , C22C38/42 , C22C38/44 , Y10T428/12611 , Y10T428/12979 , Y10T428/13
摘要： This invention relates to a welded line pipe structure for transporting corrosive petroleum or natural gas. It is constituted by martensitic stainless steel pipes containing 8-16% Cr and at most 0.05% C. By suitably controlling the welding conditions at the time of girth welding of the steel pipes so as to ensure that the Cr concentration in grain boundary Cr-depleted portions existing immediately beneath a weld oxide scale is at least 5%, the occurrence of SCC in a high temperature CO2 environment can be prevented.
摘要翻译：本发明涉及一种输送腐蚀性石油或天然气的焊接管道结构。由含有8-16％Cr和最多0.05％C的马氏体不锈钢管构成。通过适当控制钢管的环形焊接时的焊接条件，以确保Cr界限Cr浓度Cr- 焊接氧化皮刻度正下方存在的贫化部分为至少5％，可以防止在高温CO 2环境中出现SCC。

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