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1. 发明授权

US5614044A Method of manufacturing a laminated ceramic device 失效
标题翻译：层压陶瓷器件的制造方法
公开(公告)号：US5614044A
公开(公告)日：1997-03-25
申请号：US416537
申请日：1995-04-03
申请人： Hiroyuki Nagayama , Yoshihisa Ushida
发明人： Hiroyuki Nagayama , Yoshihisa Ushida
IPC分类号： H01L41/083 , H01L41/273 , B32B18/00
CPC分类号： H01L41/273 , H01L41/0471 , H01L41/0838 , Y10T29/42
摘要： Laminated ceramic devices useful as an actuator or other device responsive to electrostrictive effects or photoelectric effects are manufactured by a method which includes the steps of forming an internal electrode on each of a plurality of unbaked ceramic sheets. Each of the internal electrodes is provided with a notched area for defining a so-called future space. A plurality of the unbaked ceramic sheets is assembled to form a laminate whereby the notched areas defining the future spaces are alternately located on two different sides of the laminate with the alternate notched areas being vertically aligned. The assembled plurality of ceramic sheets is then fired and the internal electrodes baked to thereby definitively form spaces defined by the notched areas which define the so-called future or void spaces. The resulting formed spaces are thereby alternatively located on different sides of the laminate. The device is completed by connecting first and second groups of alternating internal electrodes with respective external electrodes arranged along the different sides opposite to the corresponding respective spaces. As a result, each of the external electrodes is separated from the group of alternating internal electrodes to which it is not electrically connected by the resulting corresponding spaces. As a result, the laminated ceramic device is not or is less subject to concentration of stress due to uneven distribution of strain caused by application of an electric field whereby the durability of the laminated ceramic device is improved.
摘要翻译：用作响应于电致伸缩效应或光电效应的致动器或其他装置的层压陶瓷装置通过包括在多个未烘烤的陶瓷片中的每一个上形成内部电极的步骤的方法制造。每个内部电极设置有用于限定所谓的未来空间的凹口区域。多个未烘烤的陶瓷片被组装以形成层压体，由此限定未来空间的缺口区域交替地位于层压板的两个不同侧面上，其中交替的切口区域垂直对准。然后烧结组装的多个陶瓷片，并且烘烤内部电极，从而明确地形成由限定所谓的未来或空隙空间的缺口区限定的空间。由此形成的所形成的空间可交替地位于层压板的不同侧面上。通过将第一组和第二组交替的内部电极与沿着相应的相应空间相对的不同侧布置的相应的外部电极连接来完成该装置。结果，每个外部电极与由其产生的相应空间未被电连接的一组交替的内部电极分离。结果，层叠陶瓷器件由于施加电场而引起的应变不均匀分布，不会受到应力集中或较小的影响，从而提高了层叠陶瓷器件的耐久性。

2. 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。

3. 发明申请

US20100258752A1 OPTICAL FILTER, OPTICAL FILTER FOR DISPLAY, AND DISPLAY AND PLASMA DISPLAY PANEL PROVIDED WITH THE OPTICAL FILTER 审中-公开
标题翻译：光学过滤器，用于显示的光学过滤器，以及用光学过滤器提供的显示和等离子体显示面板
公开(公告)号：US20100258752A1
公开(公告)日：2010-10-14
申请号：US12747813
申请日：2008-12-12
申请人： Takayuki Mochizuki , Masato Sugimachi , Genho Takano , Hiroyuki Nagayama
发明人： Takayuki Mochizuki , Masato Sugimachi , Genho Takano , Hiroyuki Nagayama
IPC分类号： G02B5/22 , G21F3/00 , G21F1/12
CPC分类号： H05K9/0096 , B32B3/266 , B32B5/147 , B32B7/06 , B32B7/12 , B32B15/02 , B32B15/08 , B32B15/18 , B32B15/20 , B32B17/10018 , B32B27/08 , B32B27/14 , B32B27/18 , B32B27/281 , B32B27/283 , B32B27/285 , B32B27/286 , B32B27/288 , B32B27/302 , B32B27/304 , B32B27/306 , B32B27/308 , B32B27/32 , B32B27/34 , B32B27/36 , B32B27/365 , B32B27/38 , B32B27/40 , B32B27/42 , B32B2255/04 , B32B2255/06 , B32B2255/10 , B32B2255/205 , B32B2255/26 , B32B2255/28 , B32B2260/025 , B32B2260/046 , B32B2264/10 , B32B2264/105 , B32B2307/212 , B32B2307/306 , B32B2307/40 , B32B2307/402 , B32B2307/412 , B32B2307/50 , B32B2307/538 , B32B2307/584 , B32B2457/20 , B32B2457/204 , G02B5/204
摘要： An optical filter having excellent durability and a display including the same is provided. The optical filter contains therein a transparent substrate, a mesh-shaped electromagnetic shield layer provided on the substrate, and a functional layer provided on the electromagnetic shield layer. The electromagnetic shield layer of the invention is characterized by a surface roughness (Ra) exceeding 0.02 μm.
摘要翻译：提供了具有优异的耐久性的滤光器和包括其的显示器。滤光器包含透明基板，设置在基板上的网状电磁屏蔽层和设置在电磁屏蔽层上的功能层。本发明的电磁屏蔽层的特征在于表面粗糙度（Ra）超过0.02μm。

4. 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）

5. 发明授权

US5943546A Gradient function material 失效
标题翻译：梯度功能材料
公开(公告)号：US5943546A
公开(公告)日：1999-08-24
申请号：US564777
申请日：1995-11-29
申请人： Hirotaka Ishibashi , Koichi Hayashi , Hiroyuki Nagayama
发明人： Hirotaka Ishibashi , Koichi Hayashi , Hiroyuki Nagayama
IPC分类号： B22F3/22 , B22F7/02 , B22F7/06 , B28B1/00 , B28B1/26 , B28B17/00 , C04B35/622 , C22C1/10 , H01J61/36 , B22F3/00
CPC分类号： C22C1/1026 , B22F3/22 , B22F7/02 , B22F7/06 , B28B1/008 , B28B1/26 , B28B17/0018 , C04B35/622 , H01J61/363 , B22F2998/00 , B22F2999/00 , Y10T428/12021 , Y10T428/12028 , Y10T428/12049 , Y10T428/12056 , Y10T428/12139 , Y10T428/12146
摘要： A disclosed gradient function material is produced by molding and thereafter firing a slurry which contains a plurality of groups of particles having different specific gravities. The plurality of groups of particles include at least a first group of particles and a second group of particles. The first group of particles comprises a group of non-metal particles having a specific gravity ranging from about 3 to 7 and a maximum particle diameter equal to or smaller than a deflocculation limit, said non-metal particles being made of one or more materials selected from the group consisting of an oxide, a carbide, a nitride, and an oxynitride. The second group of particles comprises a group of metal particles having a specific gravity which is about 1.5 times the specific gravity of said first group of particles, and particle diameters distributed across the deflocculation limit. The gradient function material is manufactured by preparing a slurry containing a plurality of groups of particles and/or a plurality of slurries, and supplying the slurry or slurries into a porous mold to form a deposited region in the porous mold initially primarily influenced by way of attraction of the porous mold and subsequently primarily influenced by a deflocculating effect of the particles in the slurry or slurries or under the influence of the gravity.
摘要翻译：所公开的梯度功能材料是通过模塑制造的，然后焙烧含有多组具有不同比重的颗粒的浆料。多组颗粒包括至少第一组颗粒和第二组颗粒。第一组颗粒包括比重范围为约3至7并且最大粒径等于或小于抗絮凝极限的一组非金属颗粒，所述非金属颗粒由选自下列的一种或多种材料制成：由氧化物，碳化物，氮化物和氮氧化物组成的组中。第二组颗粒包括一组比重约为所述第一组颗粒比重的约1.5倍的金属颗粒，并且分布于整个抗絮凝极限的颗粒直径。梯度功能材料是通过制备含有多组颗粒和/或多种浆料的浆料制造的，并将浆料或浆料供应到多孔模具中，以在多孔模具中形成沉积区域，最初主要受多孔模具吸引多孔模具，随后主要受到颗粒在浆料或浆料中或在重力影响下的抗絮凝作用的影响。

6. 发明授权

US09579870B2 Welded joint of duplex stainless steel 有权
标题翻译：双相不锈钢焊接
公开(公告)号：US09579870B2
公开(公告)日：2017-02-28
申请号：US13984321
申请日：2012-02-10
申请人： Hiroyuki Nagayama , Kenta Yamada , Masahiko Hamada , Daisuke Motoya , Hisashi Amaya
发明人： Hiroyuki Nagayama , Kenta Yamada , Masahiko Hamada , Daisuke Motoya , Hisashi Amaya
IPC分类号： B23K35/30 , B32B15/01 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/42 , C22C38/44 , B23K9/167 , B23K9/173
CPC分类号： B32B15/013 , B23K9/167 , B23K9/173 , B23K35/3033 , B23K35/3053 , B23K2103/04 , B23K2103/05 , B32B15/01 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/42 , C22C38/44 , Y10T428/12972
摘要： A welded joint of duplex stainless steel, which can suppress precipitation σ phase under high heat input welding, is excellent in SCC resistance under high-temperature chloride environments. A weld metal of the welded joint contains, 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: at most 2.00%, Ni: 7.00 to 12.00%, Cr: 20.0 to 30.0%, Mo: 1 to 4%, N: 0.100 to 0.350%, sol. Al: at most 0.040%, and O: at most 0.035%, the balance being Fe and impurities. The weld metal satisfies Expressions (1) and (3): 2.2Cr+7Mo+3Cu>66 (1) Cr+11Mo+10Ni−12(Cu+30N)
摘要翻译：提供了双相不锈钢的焊接接头，其可以抑制高热输入焊接时的相的析出，并且在高温氯化物环境下具有优异的SCC电阻。根据本发明的双相不锈钢焊接接头的焊接金属以质量％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，Cu：2.00％以下，Ni：7.00〜12.00％，Cr：20.0〜30.0％，Mo：1〜4％，N：0.100〜0.350％ Al：0.040％以下，O：0.035％以下，余量为Fe和杂质，焊接金属满足式（1）和式（3）：2.2 ¢Cr + 7 ¢Mo + 3 ¢ Cu> 66 Cr + 11 ¢Mo + 10 ¢Ni-12 Cu + 30 ¢N <100其中贱金属和焊接金属之一中的每种元素的含量（质量百分比）代入表达式（1）和表达式（3）中的每个元素。

7. 发明授权

US5972067A Gradient function material seal cap for discharge lamp bulb 有权
标题翻译：梯度功能材料密封帽用于放电灯泡
公开(公告)号：US5972067A
公开(公告)日：1999-10-26
申请号：US134823
申请日：1998-08-17
申请人： Hirotaka Ishibashi , Koichi Hayashi , Hiroyuki Nagayama
发明人： Hirotaka Ishibashi , Koichi Hayashi , Hiroyuki Nagayama
IPC分类号： B22F3/22 , B22F7/02 , B22F7/06 , B28B1/00 , B28B1/26 , B28B17/00 , C04B35/622 , C22C1/10 , H01J61/36
CPC分类号： C22C1/1026 , B22F3/22 , B22F7/02 , B22F7/06 , B28B1/008 , B28B1/26 , B28B17/0018 , C04B35/622 , H01J61/363 , B22F2998/00 , B22F2999/00 , Y10T428/12021 , Y10T428/12028 , Y10T428/12049 , Y10T428/12056 , Y10T428/12139 , Y10T428/12146
摘要： A disclosed gradient function material seal cap for discharge lamp bulb is produced by molding and thereafter firing a slurry which contains a plurality of groups of particles having different specific gravities. The plurality of groups of particles include at least a first group of particles and a second group of particles. The first group of particles comprises a group of non-metal particles having a specific gravity ranging from about 3 to 7 and a maximum particle diameter equal to or smaller than a deflocculation limit, said nonmetal particles being made of one or more materials selected from the group consisting of an oxide, a carbide, a nitride, and an oxynitride. The second group of particles comprises a group of metal particles having a specific gravity which is about 1.5 times the specific gravity of said first group of particles, and particle diameters distributed across the deflocculation limit. The gradient function material seal cap is manufactured by preparing a slurry containing a plurality of groups of particles and/or a plurality of slurries, and supplying the slurry or slurries into a porous mold to form a deposited region in the porous mold initially primarily influenced by way of attraction of the porous mold and subsequently primarily influenced by a deflocculating effect of the particles in the slurry or slurries or under the influence of the gravity.
摘要翻译：公开了一种用于放电灯泡的梯度功能材料密封盖，其通过模制并随后焙烧含有多组具有不同比重的颗粒的浆料来制备。多组颗粒包括至少第一组颗粒和第二组颗粒。第一组颗粒包括比重范围为约3至7并且最大粒径等于或小于抗絮凝极限的一组非金属颗粒，所述非金属颗粒由选自以下的一种或多种材料制成：由氧化物，碳化物，氮化物和氮氧化物组成的组。第二组颗粒包括一组比重约为所述第一组颗粒比重的约1.5倍的金属颗粒，并且分布于整个抗絮凝极限的颗粒直径。梯度功能材料密封帽是通过制备含有多组颗粒和/或多种浆料的浆料制造的，并将浆料或浆料供应到多孔模具中，以在多孔模具中形成初始主要受多孔模具的吸引方式，随后主要受到颗粒在浆料或浆料中或在重力影响下的抗絮凝作用的影响。

8. 发明授权

US5742123A Sealing structure for light-emitting bulb assembly and method of manufacturing same 失效
标题翻译：发光灯泡组件的密封结构及其制造方法
公开(公告)号：US5742123A
公开(公告)日：1998-04-21
申请号：US869877
申请日：1997-06-05
申请人： Hiroyuki Nagayama
发明人： Hiroyuki Nagayama
IPC分类号： H01J9/26 , H01J61/30 , H01J61/36 , H01J5/04
CPC分类号： H01J9/266 , H01J61/302 , H01J61/363 , H01J61/366 , H01J61/82
摘要： A sealing structure for a light-emitting bulb assembly includes a closure, having a core which serves as an electrode for sealing an open end of a bulb. The closure includes a bulb-side region disposed adjacent to the open end of the bulb and made of a compositional ingredient having a coefficient of thermal expansion which is substantially the same as that of the bulb, a core-side region disposed adjacent to the core and made of a compositional ingredient having a coefficient of thermal expansion which is substantially the same as that of the core, and an intermediate region disposed between the bulb-side region and the core-side region and made of a compositional ingredient having compositional proportions adjusted such that a coefficient of thermal expansion thereof varies gradually from the coefficient of thermal expansion of the bulb-side region toward the coefficient of thermal expansion of the core-side region. The bulb-side region and the core-side region are separated from each other by the intermediate region and comprise a bulb-side region layer and a core-side region layer, respectively, which are independent of each other. The intermediate region comprises at least one layer whose coefficient of thermal expansion varies gradually from the bulb-side region toward the core-side region. The layers of the closure are progressively thicker from the bulb-side region layer toward the core-side region layer.
摘要翻译：用于发光灯泡组件的密封结构包括具有用作密封灯泡的开口端的电极的芯的封闭件。所述封闭件包括灯泡侧区域，所述灯泡侧区域邻近所述灯泡的开口端设置并且由具有与所述灯泡的热膨胀系数基本相同的热膨胀系数的组成成分制成，与所述灯芯相邻设置的芯侧区域并且由具有与芯的热膨胀系数基本相同的热膨胀系数的组成成分构成，以及设置在灯泡侧区域和芯侧区域之间的中间区域，并且由组成成分调整成分的组成成分使得其热膨胀系数从灯泡侧区域的热膨胀系数朝向芯侧区域的热膨胀系数逐渐变化。灯泡侧区域和芯侧区域通过中间区域彼此分离，并且分别包括彼此独立的灯泡侧区域层和芯侧区域层。中间区域包括至少一个热膨胀系数从灯泡侧区域朝向芯侧区域逐渐变化的层。封闭层从灯泡侧区域层朝向芯侧区域层逐渐变厚。

9. 发明授权

US5653924A Methods of manufacturing gradient function material 失效
标题翻译：制造梯度功能材料的方法
公开(公告)号：US5653924A
公开(公告)日：1997-08-05
申请号：US246134
申请日：1994-05-19
申请人： Hirotaka Ishibashi , Koichi Hayashi , Hiroyuki Nagayama
发明人： Hirotaka Ishibashi , Koichi Hayashi , Hiroyuki Nagayama
IPC分类号： B22F3/22 , B22F7/02 , B22F7/06 , B28B1/00 , B28B1/26 , B28B17/00 , C04B35/622 , C22C1/10 , H01J61/36 , B01D21/00 , B03D3/00
CPC分类号： C22C1/1026 , B22F3/22 , B22F7/02 , B22F7/06 , B28B1/008 , B28B1/26 , B28B17/0018 , C04B35/622 , H01J61/363 , B22F2998/00 , B22F2999/00 , Y10T428/12021 , Y10T428/12028 , Y10T428/12049 , Y10T428/12056 , Y10T428/12139 , Y10T428/12146
摘要： A disclosed gradient function material is produced by molding and thereafter firing a slurry which contains a plurality of groups of particles having different specific gravities. The plurality of groups of particles include at least a first group of particles and a second group of particles. The first group of particles comprises a group of nonmetal particles having a specific gravity ranging from about 3 to 7 and a maximum particle diameter equal to or smaller than a deflocculation limit, said nonmetal particles being made of one or more materials selected from the group consisting of an oxide, a carbide, a nitride, and an oxynitride. The second group of particles comprises a group of metal particles having a specific gravity which is about 1.5 times the specific gravity of said first group of particles, and particle diameters distributed across the deflocculation limit. The gradient function material is manufactured by preparing a slurry containing a plurality of groups of particles and/or a plurality of slurries, and supplying the slurry or slurries into a porous mold to form a deposited region in the porous mold initially primarily influenced by way of attraction of the porous mold and subsequently primarily influenced by a deflocculating effect of the particles in the slurry or slurries or under the influence of the gravity.
摘要翻译：所公开的梯度功能材料是通过模塑制造的，然后焙烧含有多组具有不同比重的颗粒的浆料。多组颗粒包括至少第一组颗粒和第二组颗粒。第一组颗粒包括比重范围为约3至7并且最大粒径等于或小于抗絮凝极限的一组非金属颗粒，所述非金属颗粒由选自以下的一种或多种材料制成：的氧化物，碳化物，氮化物和氧氮化物。第二组颗粒包括一组比重约为所述第一组颗粒比重的约1.5倍的金属颗粒，并且分布于整个抗絮凝极限的颗粒直径。梯度功能材料是通过制备含有多组颗粒和/或多种浆料的浆料制造的，并将浆料或浆料供应到多孔模具中，以在多孔模具中形成沉积区域，最初主要受多孔模具吸引多孔模具，随后主要受到颗粒在浆料或浆料中或在重力影响下的抗絮凝作用的影响。

10. 发明授权

US09771628B2 Duplex stainless steel and production method therefor 有权
公开(公告)号：US09771628B2
公开(公告)日：2017-09-26
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 , C21D6/00 , C22C38/54 , C22C38/46 , C22C38/00 , C22C38/42 , C22C38/04 , C22C38/02 , C22C38/44 , C22C38/06 , C22C1/02
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.

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