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    STEEL SHEET AND A METHOD FOR ITS MANUFACTURE
    3.
    发明申请
    STEEL SHEET AND A METHOD FOR ITS MANUFACTURE 审中-公开
    钢板及其制造方法

    公开(公告)号：US20130192724A1

    公开(公告)日：2013-08-01

    申请号：US13699845

    申请日：2010-05-27

    申请人： Yasuaki Tanaka ,  Toshiro Tomida ,  Kaori Kawano

    发明人： Yasuaki Tanaka ,  Toshiro Tomida ,  Kaori Kawano

    IPC分类号： C21D8/02 ,  C22C38/28 ,  C22C38/26 ,  C22C38/00 ,  C22C38/22 ,  C22C38/06 ,  C22C38/02 ,  C22C38/38 ,  C22C38/24

    摘要： A high-strength steel sheet has a chemical composition comprising C: 0.05-0.20%, Si: 0.02-3.0%, Mn: 0.5-3.0%, P: at most 0.5%, S: at most 0.05%, Cr: 0.05-1.0%, sol. Al: 0.01-1.0%, one or more elements selected from the group consisting of Ti, Nb, Mo, V, and W: a total of 0.002-0.03%, and a remainder of Fe and impurities. The sheet has an average grain diameter of ferrite of at most 3.0 μm at least in a region of 100-200 μm in the sheet thickness direction from the surface of the steel sheet. The average spacing in the sheet thickness direction of the remaining structure in this region is at most 3.0 μm. Mechanical properties include at least 750 MPa tensile strength and at least 13,000 MPa·% (tensile strength×elongation).

    摘要翻译： 高强度钢板具有C：0.05〜0.20％，Si：0.02〜3.0％，Mn：0.5〜3.0％，P：0.5％以下，S：0.05％以下，Cr：0.05〜 1.0％，sol。 Al：0.01-1.0％，选自Ti，Nb，Mo，V和W中的一种或多种元素：总计0.002-0.03％，余量为Fe和杂质。 至少在钢板表面的板厚度方向上至少在100-200μm的区域中，铁素体的平均粒径为3.0μm以下。 该区域的剩余结构的板厚方向的平均间隔为3.0μm以下。 机械性能包括至少750MPa的拉伸强度和至少13000MPa·％（拉伸强度×伸长率）。

    Steel sheet and a method for its manufacture
    5.
    发明授权
    Steel sheet and a method for its manufacture 有权

    公开(公告)号：US10538823B2

    公开(公告)日：2020-01-21

    申请号：US13699845

    申请日：2010-05-27

    申请人： Yasuaki Tanaka ,  Toshiro Tomida ,  Kaori Kawano

    发明人： Yasuaki Tanaka ,  Toshiro Tomida ,  Kaori Kawano

    IPC分类号： C22C38/00 ,  C22C38/02 ,  C22C38/06 ,  C22C38/28 ,  C22C38/38 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C21D8/02

    摘要： A high-strength steel sheet has a chemical composition comprising C: 0.05-0.20%, Si: 0.02-3.0%, Mn: 0.5-3.0%, P: at most 0.5%, S: at most 0.05%, Cr: 0.05-1.0%, sol. Al: 0.01-1.0%, one or more elements selected from the group consisting of Ti, Nb, Mo, V, and W: a total of 0.002-0.03%, and a remainder of Fe and impurities. The sheet has an average grain diameter of ferrite of at most 3.0 μm at least in a region of 100-200 μm in the sheet thickness direction from the surface of the steel sheet. The average spacing in the sheet thickness direction of the remaining structure in this region is at most 3.0 μm. Mechanical properties include at least 750 MPa tensile strength and at least 13,000 MPa·% (tensile strength×elongation).

    Austenitic heat resistant alloy
    7.
    发明授权
    Austenitic heat resistant alloy 有权
    奥氏体耐热合金

    公开(公告)号：US08313591B2

    公开(公告)日：2012-11-20

    申请号：US12647028

    申请日：2009-12-24

    申请人： Hiroyuki Hirata ,  Atsuro Iseda ,  Hirokazu Okada ,  Hiroyuki Semba ,  Kaori Kawano ,  Osamu Miyahara

    发明人： Hiroyuki Hirata ,  Atsuro Iseda ,  Hirokazu Okada ,  Hiroyuki Semba ,  Kaori Kawano ,  Osamu Miyahara

    IPC分类号： C22C30/00 ,  C22C19/05

    CPC分类号： C22C38/44 ,  C21D6/001 ,  C21D6/002 ,  C21D6/004 ,  C22C38/001 ,  C22C38/002 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/50 ,  C22C38/52 ,  C22C38/54 ,  F22B37/04

    摘要： An austenitic heat resistant alloy, which contains, by mass percent, C≦0.15%, Si≦2%, Mn≦3%, Ni: 40 to 80%, Cr: 15 to 40%, W and Mo: 1 to 15% in total content, Ti≦3%, Al≦3%, N≦0.03%, O≦0.03%, with the balance being Fe and impurities, and among the impurities P≦0.04%, S≦0.03%, Sn≦0.1%, As≦0.01%, Zn≦0.01%, Pb≦0.01% and Sb≦0.01%, and satisfies the conditions [P1=S+{(P+Sn)/2}+{(As+Zn+Pb+Sb)/5}≦0.050], [0.2≦P2=Ti+2Al≦7.5−10×P1], [P2≦9.0−100×O] and [N≦0.002×P2+0.019] can prevent both the liquation crack in the HAZ and the brittle crack in the HAZ and also can prevent defects due to welding fabricability, which occur during welding fabrication, and moreover has excellent creep strength at high temperatures. Therefore, the alloy can be used suitably as a material for constructing high temperature machines and equipment, such as power generating boilers, plants for the chemical industry and so on. The ally may contain a specific amount or amounts of one or more elements selected from Co, B, Ta, Hf, Nb, Zr, Ca, Mg, Y, La, Ce and Nd.

    摘要翻译： 一种奥氏体耐热合金，以质量％计含有0.15％，Si＆NlE; 2％，Mn＆NlE; 3％，Ni：40〜80％，Cr：15〜40％，W和Mo：1〜15％ 在总含量中，Ti＆NlE; 3％，Al＆NlE; 3％，N＆amp; NlE; 0.03％，O＆NlE; 0.03％，余量为Fe和杂质，杂质P＆lt; L; 0.04％，S＆NlE; 0.03％，Sn＆ ，As / nlE; 0.01％，Zn和nlE; 0.01％，Pb和nlE; 0.01％和Sb＆nlE; 0.01％，满足条件[P1 = S + {（P + Sn）/ 2} + {（As + Zn + Pb + Sb）/ 5}＆nlE; 0.050]，[0.2＆nlE; P2 = Ti + 2Al＆nlE; 7.5-10×P1]，[P2＆nlE; 9.0-100×O]和[N＆lt; lE; 0.002×P2 + 0.019]可以防止液化裂纹 HAZ和HAZ中的脆性裂纹，并且还可以防止在焊接制造期间发生的焊接可制造性的缺陷，并且还在高温下具有优异的蠕变强度。 因此，该合金可以适当地用作构成发电锅炉，化工工业用等的高温机器和设备的材料。 盟友可以含有一定量或数量的选自Co，B，Ta，Hf，Nb，Zr，Ca，Mg，Y，La，Ce和Nd中的一种或多种元素。

    Low alloy steel
    9.
    发明申请
    Low alloy steel 有权
    低合金钢

    公开(公告)号：US20080156400A1

    公开(公告)日：2008-07-03

    申请号：US12073324

    申请日：2008-03-04

    申请人： Takashi Nakashima ,  Kaori Kawano ,  Masaaki Igarashi

    发明人： Takashi Nakashima ,  Kaori Kawano ,  Masaaki Igarashi

    IPC分类号： C22C38/22

    CPC分类号： C21C7/0006 ,  C21C7/06 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/22

    摘要： According to a low alloy steel of the present invention, compositional elements thereof are limited, and a metal structure thereof comprises bainite or martensite. Further, a proper amounts of Nd inclusions are formed by appropriately selecting timings of deoxidation and Nd addition in melting a steel. Consequently, compatibility between high-temperature creep strength and long-term creep ductility, which is hardly established in conventional steels, can be achieved even in hostile conditions. Accordingly, the low alloy steel of the present invention can be widely applied as the material for the heat-resistant structural member used for a long time under the high-temperature and high-pressure conditions such as power plant boilers, turbines, and nuclear power plants.

    摘要翻译： 根据本发明的低合金钢，其组成元素受到限制，其金属结构包括贝氏体或马氏体。 此外，通过在钢中熔融时适当选择脱氧和Nd添加的定时，形成适量的Nd夹杂物。 因此，即使在恶劣的条件下，也可以实现在常规钢中难以确定的高温蠕变强度与长期蠕变延展性之间的相容性。 因此，本发明的低合金钢可以广泛地用作在高温高压条件下长时间使用的耐火构件的材料，例如发电厂锅炉，涡轮机和核能 植物。

    Ni-base heat resistant alloy
    10.
    发明授权
    Ni-base heat resistant alloy 有权
    镍基耐热合金

    公开(公告)号：US08293169B2

    公开(公告)日：2012-10-23

    申请号：US13070689

    申请日：2011-03-24

    申请人： Hiroyuki Semba ,  Atsuro Iseda ,  Hiroyuki Hirata ,  Kaori Kawano ,  Masaaki Igarashi ,  Osamu Miyahara

    发明人： Hiroyuki Semba ,  Atsuro Iseda ,  Hiroyuki Hirata ,  Kaori Kawano ,  Masaaki Igarashi ,  Osamu Miyahara

    IPC分类号： C22C19/05

    CPC分类号： C22C19/055 ,  C22C19/056

    摘要： A high strength, ductile, and tough Ni-base heat resistant alloy comprises by mass percent, C: 0.1% or less, Si: 1% or less, Mn: 1% or less, Cr: not less than 15% to less than 28%, Fe: 15% or less, W: more than 5% to not more than 20%, Al: more than 0.5% to not more than 2%, Ti: more than 0.5% to not more than 2%, Nd: 0.001 to 0.1% and B: 0.0005 to 0.01%, with the balance being Ni and impurities. Impurity contents of P, S, Sn, Pb, Sb, Zn and As are P: 0.03% or less, S: 0.01% or less, Sn: 0.020% or less, Pb: 0.010% or less, Sb: 0.005% or less, Zn: 0.005% or less and As: 0.005% or less, and formulas of [0.015≦Nd+13.4×B≦0.13], [Sn+Pb≦0.025] and [Sb+Zn +As≦0.010] are met.

    摘要翻译： 高强度，延性和韧性的Ni基耐热合金，以质量％计，C：0.1％以下，Si：1％以下，Mn：1％以下，Cr：15％以上，小于 28％，Fe：15％以下，W：5％以上20％以下，Al：0.5％以上2％以下，Ti：0.5％以上且2％以下，Nd ：0.001〜0.1％，B：0.0005〜0.01％，余量为Ni和杂质。 P，S，Sn，Pb，Sb，Zn和As的杂质含量P：0.03％以下，S：0.01％以下，Sn：0.020％以下，Pb：0.010％以下，Sb：0.005％ 较少，Zn：0.005％以下，As：0.005％以下，[0.015＆nlE; Nd + 13.4×B＆nlE; 0.13]，[Sn + Pb＆nlE; 0.025]和[Sb + Zn + As＆nlE; 0.025] 见面