HEAT RESISTANT FERRITIC STEEL
    1.
    发明申请
    HEAT RESISTANT FERRITIC STEEL 审中-公开
    耐热钢

    公开(公告)号:US20100086430A1

    公开(公告)日:2010-04-08

    申请号:US12631307

    申请日:2009-12-04

    摘要: There is provided a heat resistant ferritic steel, excellent in the weld crack resistance of the HAZ and creep strength. A high-Cr heat resistant ferritic steel is characterized by consisting of, by mass %, Si: more than 0.1% and not more than 1.0%, Mn: 2.0% or less, Co: 1 to 8%, Cr: 7 to 13%, V: 0.05 to 0.4%, Nb: 0.01 to 0.09%, either one or both of Mo and W: 0.5 to 4% as a total, B: 0.005 to 0.025%, Al: 0.03% or less, and N: 0.003 to 0.06%, and containing C in an amount satisfying Expression (1), the balance being Fe and impurities, and O, P and S as impurities being such that O: 0.02% or less, P: 0.03% or less, and S: 0.02% or less, respectively, 0.005≦C≦(−5/3)×B+0.085  (1) in which C and B represent the content of each element (mass %). Furthermore, the high-Cr heat resistant ferritic steel may contain one or more kinds selected from the group consisting of Nd, Ta, Ca and Mg.

    摘要翻译: 提供耐热铁素体钢,HAZ的耐焊缝龟裂性和蠕变强度优异。 高Cr耐热铁素体钢的特征在于以质量%计含有Si:大于0.1%且不大于1.0%的Mn:2.0%以下,Co:1〜8%,Cr:7〜13 %,V:0.05〜0.4%,Nb:0.01〜0.09%,Mo和W中的任一种或两者:总计为0.5〜4%,B:0.005〜0.025%,Al:0.03%以下,N: 0.003〜0.06%,含有满足式(1)的量的C,余量为Fe和杂质,作为杂质的O,P和S为O:0.02%以下,P:0.03%以下,P:0.03%以下, S:0.02%以下,分别为0.005≦̸ C&NlE;( - 5/3)×B + 0.085(1)其中C和B表示各元素的含量(质量%)。 此外,高Cr耐热铁素体钢可以含有选自Nd,Ta,Ca和Mg中的一种或多种。

    Austenitic heat resistant alloy
    2.
    发明授权
    Austenitic heat resistant alloy 有权
    奥氏体耐热合金

    公开(公告)号:US08808473B2

    公开(公告)日:2014-08-19

    申请号:US13472640

    申请日:2012-05-16

    IPC分类号: C22C19/05

    CPC分类号: C22C19/055

    摘要: An austenitic heat resistant alloy includes, by mass percent, C: 0.15% or less, Si: 2% or less, Mn: 3% or less, Ni: 40 to 60%, Co: 10.14 to 25%, Cr: 15% or more and less than 28%, either one or both of Mo: 12% or less and W: less than 0.05%, the total content thereof being 0.1 to 12%, Nd: 0.001 to 0.1%, B: 0.0005 to 0.006%, N: 0.03% or less, O: 0.03% or less, at least one selected from Al: 1.36% or less, Ti: 3% or less, and Nb: 3% or less, and the balance being Fe and impurities. The contents of P and S in the impurities are P: 0.03% or less and S: 0.01% or less. The alloy satisfies 1≦4×Al+2×Ti+Nb≦12 and P+0.2×Cr×B≦0.035, where an element in the Formulas represents the content by mass percent.

    摘要翻译: 奥氏体系耐热合金的质量百分比含有:C:0.15%以下,Si:2%以下,Mn:3%以下,Ni:40〜60%,Co:10.14〜25%,Cr:15% 以上且小于28%,Mo:12%以下,W:小于0.05%,其总含量为0.1〜12%,Nd:0.001〜0.1%,B:0.0005〜0.006% ,N:0.03%以下,O:0.03%以下,Al:1.36%以下,Ti:3%以下,Nb:3%以下中的至少一种,余量为Fe和杂质。 杂质中P和S的含量为P:0.03%以下,S:0.01%以下。 合金满足1≦̸ 4×Al + 2×Ti + Nb≦̸ 12和P + 0.2×Cr×B≦̸ 0.035,式中的元素表示质量百分含量。

    AUSTENITIC HEAT RESISTANT ALLOY
    3.
    发明申请
    AUSTENITIC HEAT RESISTANT ALLOY 有权
    奥氏体耐热合金

    公开(公告)号:US20120288400A1

    公开(公告)日:2012-11-15

    申请号:US13472640

    申请日:2012-05-16

    IPC分类号: C22C19/05

    CPC分类号: C22C19/055

    摘要: An austenitic heat resistant alloy consisting of, by mass percent, C: 0.15% or less, Si: 2% or less, Mn: 3% or less, Ni: 40 to 60%, Co: 0.03 to 25%, Cr: 15% or more and less than 28%, either one or both of Mo: 12% or less and W: less than 4%, the total content thereof being 0.1 to 12%, Nd: 0.001 to 0.1%, B: 0.0005 to 0.006%, N: 0.03% or less, O: 0.03% or less, at least one selected from Al: 3% or less, Ti: 3% or less, and Nb: 3% or less, the balance being Fe and impurities. The contents of P and S in the impurities being P: 0.03% or less and S: 0.01% or less. The alloy satisfies 1≦4×Al+2×Ti+Nb≦12 and P+0.2×Cr×B≦0.035, is excellent in weld crack resistance and toughness of HAZ, and is further excellent in creep strength at high temperatures.

    摘要翻译: 一种奥氏体系耐热合金,以质量%计含有C:0.15%以下,Si:2%以下,Mn:3%以下,Ni:40〜60%,Co:0.03〜25%,Cr:15 %以上且小于28%,Mo:12%以下,W:小于4%,其总含量为0.1〜12%,Nd:0.001〜0.1%,B:0.0005〜0.006 %,N:0.03%以下,O:0.03%以下,选自Al:3%以下,Ti:3%以下,Nb:3%以下,余量为Fe和杂质中的至少一种。 杂质中P和S的含量为:0.03%以下,S:0.01%以下。 合金满足1≦̸ 4×Al + 2×Ti + Nb≦̸ 12和P + 0.2×Cr×B≦̸ 0.035,HAZ的耐熔融裂纹性和韧性优异,并且在高温下的蠕变强度更优异。

    Martensitic stainless steel and method for manufacturing same
    4.
    发明授权
    Martensitic stainless steel and method for manufacturing same 有权
    马氏体不锈钢及其制造方法

    公开(公告)号:US07662244B2

    公开(公告)日:2010-02-16

    申请号:US10443821

    申请日:2003-05-23

    IPC分类号: C22C38/18

    摘要: A martensitic stainless steel provided includes C: 0.01-0.1% and Cr: 9-15%, and the retained austenite phase has a thickness not more than 100 nm in such a manner that the X-ray integral intensities of 111γ and 110α satisfy the following formula (a): 0.005≦111γ/(111γ+110α)≦0.05  (a) Such a metal structure can be obtained by the following procedure: the steel is heated at a temperature of the Ac3 point or more, and then cooled from 800° C. to 400° C. at a cooling rate of not less than 0.08° C./sec and further cooled down to 150° C. at a cooling rate of not more than 1° C./sec. The martensitic stainless steel according to the present invention has a relatively high carbon content and a greater toughness in spite of a high mechanical strength, and further exhibits an excellent corrosion resistance, so that it is particularly effective as the material for constructing a deep oil well.

    摘要翻译: 提供的马氏体不锈钢包括C:0.01-0.1%和Cr:9-15%,并且残留奥氏体相的厚度不大于100nm,使得111gamma和110alpha的X射线积分强度满足 下式(a):0.005 <= 111gamma /(111gamma + 110alpha)这样的金属结构可以通过以下步骤获得:将钢在Ac 3点以上的温度下加热,然后从800℃冷却。 至400℃,冷却速度不低于0.08℃/秒,并以不超过1℃/秒的冷却速度进一步冷却至150℃。 本发明的马氏体系不锈钢虽然具有较高的机械强度,但具有较高的碳含量和较高的韧性,并且还具有优异的耐腐蚀性,因此作为构成深油井的材料特别有效 。

    Ferritic heat resistant steel
    5.
    发明申请
    Ferritic heat resistant steel 审中-公开
    铁素体耐热钢

    公开(公告)号:US20080112837A1

    公开(公告)日:2008-05-15

    申请号:US11905877

    申请日:2007-10-05

    IPC分类号: C22C38/40

    摘要: Heat-resistant steel excellent in high-temperature long-term creep strength and creep-fatigue strength is provided. This heat-resistant steel comprises C: 0.01 to 0.13%, Si: 0.15 to 0.50%, Mn: 0.2 to 0.5%, P: not higher than 0.02%, S; not higher than 0.005%, Cr: exceeding 8.0% but lower than 12.0%, Mo: 0.1 to 1.5%, W: 1.0 to 3.0%, V: 0.1 to 0.5%, Nb: 0.02 to 0.10%, sol. Al: not higher than 0.015%, N: 0.005 to 0.070%, Nd: 0.005 to 0.050% and B: 0.002 to 0.015%, with the balance Fe and impurities; the content of Ni is lower than 0.3%, the content of Co is lower than 0.3% and the content of Cu is lower than 0.1% among the impurities; the steel contains Nd inclusions at a Nd inclusion density of not lower than 10000 inclusions/mm3. This steel may contain, in addition to the above-specified components, one or more elements of Ta, Hf, Ti, Ca and Mg.

    摘要翻译: 提供了耐高温长期蠕变强度和蠕变疲劳强度优异的耐热钢。 该耐热钢包含C:0.01〜0.13%,Si:0.15〜0.50%,Mn:0.2〜0.5%,P:0.02以下,S: 不超过0.005%,Cr:超过8.0%但低于12.0%,Mo:0.1〜1.5%,W:1.0〜3.0%,V:0.1〜0.5%,Nb:0.02〜0.10% Al:0.015%以下,N:0.005〜0.070%,Nd:0.005〜0.050%,B:0.002〜0.015%,余量为Fe和杂质; Ni的含量低于0.3%,Co含量低于0.3%,Cu含量低于0.1%。 钢含有Nd夹杂物,Nd含量密度不低于10000夹杂物/ mm 3。 除了上述规定的成分之外,该钢还含有Ta,Hf,Ti,Ca,Mg中的一种以上的元素。

    Ni-BASED HEAT RESISTANT ALLOY
    6.
    发明申请
    Ni-BASED HEAT RESISTANT ALLOY 有权
    镍基耐热合金

    公开(公告)号:US20140234155A1

    公开(公告)日:2014-08-21

    申请号:US14237586

    申请日:2012-07-31

    IPC分类号: C22C19/05

    摘要: A Ni-based heat resistant alloy as pipe, plate, rod, forgings and the like consists of C≦0.15%, Si≦2%, Mn≦3%, P≦0.03%, S≦0.01%, Cr: 15% or more and less than 28%, Mo: 3 to 15%, Co: more than 5% and not more than 25%, Al: 0.2 to 2%, Ti: 0.2% to 3%, Nd: fn to 0.08%, and O≦0.4Nd, further containing, as necessary, at least one kind of Nb, W, B, Zr, Hf, Mg, Ca, Y, La, Ce, Ta, Re and Fe of specific amounts, the balance being Ni and impurities, wherein, fn=1.7×10−5d+0.05{(Al/26.98)+(Ti/47.88)+(Nb/92.91)}. In the formula, d denotes an average grain size (μm), and each element symbol denotes the content (mass %) of that element. If the alloy contains W, Mo+(W/2)≦15% holds. The alloy has improved ductility after long-term use at high temperatures, and cracking due to welding can be avoided.

    摘要翻译: 作为管,板,棒,锻件等的Ni基耐热合金由C&lt; Ll; 0.15%,Si&NlE; 2%,Mn&NlE; 3%,P&NlE; 0.03%,S&lt; 0.01%,Cr:15% 多于28%,Mo:3〜15%,Co:5%以上25%以下,Al:0.2〜2%,Ti:0.2%〜3%,Nd:fn〜0.08% O,nNE,0.4Nd,根据需要还含有特定量的Nb,W,B,Zr,Hf,Mg,Ca,Y,La,Ce,Ta,Re和Fe中的至少一种,其余为Ni和 杂质,其中,fn = 1.7×10-5d + 0.05 {(Al / 26.98)+(Ti / 47.88)+(Nb / 92.91)}。 式中,d表示平均粒径(μm),各元素符号表示该元素的含量(质量%)。 如果合金含有W,则Mo +(W / 2)&nlE; 15%成立。 该合金在长期使用高温下具有改善的延展性,并且可以避免由于焊接引起的开裂。

    Ni-based heat resistant alloy
    7.
    发明授权
    Ni-based heat resistant alloy 有权
    镍基耐热合金

    公开(公告)号:US09328403B2

    公开(公告)日:2016-05-03

    申请号:US14237586

    申请日:2012-07-31

    IPC分类号: C22C19/05 C22F1/10

    摘要: A Ni-based heat resistant alloy as pipe, plate, rod, forgings and the like consists of C≦0.15%, Si≦2%, Mn≦3%, P≦0.03%, S≦0.01%, Cr: 15% or more and less than 28%, Mo: 3 to 15%, Co: more than 5% and not more than 25%, Al: 0.2 to 2%, Ti: 0.2% to 3%, Nd: fn to 0.08%, and O≦0.4Nd, further containing, as necessary, at least one kind of Nb, W, B, Zr, Hf, Mg, Ca, Y, La, Ce, Ta, Re and Fe of specific amounts, the balance being Ni and impurities, wherein, fn=1.7×10−5d+0.05{(Al/26.98)+(Ti/47.88)+(Nb/92.91)}. In the formula, d denotes an average grain size (μm), and each element symbol denotes the content (mass %) of that element. If the alloy contains W, Mo+(W/2)≦15% holds. The alloy has improved ductility after long-term use at high temperatures, and cracking due to welding can be avoided.

    摘要翻译: 作为管,板,棒,锻件等的Ni基耐热合金由C&lt; Ll; 0.15%,Si&NlE; 2%,Mn&NlE; 3%,P&NlE; 0.03%,S&lt; 0.01%,Cr:15% 多于28%,Mo:3〜15%,Co:5%以上25%以下,Al:0.2〜2%,Ti:0.2%〜3%,Nd:fn〜0.08% O,nNE,0.4Nd,根据需要还含有特定量的Nb,W,B,Zr,Hf,Mg,Ca,Y,La,Ce,Ta,Re和Fe中的至少一种,其余为Ni和 杂质,其中,fn = 1.7×10-5d + 0.05 {(Al / 26.98)+(Ti / 47.88)+(Nb / 92.91)}。 式中,d表示平均粒径(μm),各元素符号表示该元素的含量(质量%)。 如果合金含有W,则Mo +(W / 2)&nlE; 15%成立。 该合金在长期使用高温下具有改善的延展性,并且可以避免由于焊接引起的开裂。