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    Ni-based alloy and method for preparing same
    1.
    发明授权
    Ni-based alloy and method for preparing same 失效
    镍基合金及其制备方法

    公开(公告)号：US4798632A

    公开(公告)日：1989-01-17

    申请号：US4410

    申请日：1987-01-20

    申请人： Toshio Yonezawa ,  Noritake Yamaguchi ,  Yasutaka Okada

    发明人： Toshio Yonezawa ,  Noritake Yamaguchi ,  Yasutaka Okada

    IPC分类号： C22C19/05 ,  C22F1/10

    CPC分类号： C22C19/058 ,  C22F1/10

    摘要： The present invention is concerned with a high-strength Ni-based alloy excellent in resistance to stress corrosion cracking in high-temperature high-pressure water, characterized by consisting essentially of, in terms of weight ratio, 0.08% or less of C, 0.15% or less of Si, 0.1 to 1% of Mn, 15% or less of Fe, 20 to 30% of Cr, 3.5% or less of Ti, 2% or less of Al, 7% or less of Nb and the balance of Ni, having at least one of a .gamma.' phase and a .gamma." phase in a .gamma. base, and semicontinuously predominantly precipitating M.sub.23 C.sub.6 in grain boundaries; a method for preparing this high-strength Ni-based alloy by heating and maintaining the alloy having the identical composition at 980.degree. to 1,200.degree. C., cooling it, and subjecting it once or more to an aging treatment of additionally heating and maintaining it at 550.degree. to 850.degree. C.; a method for preparing the aforesaid alloy by heating and maintaining the alloy having the identical composition at 980.degree. to 1,200.degree. C., cooling it, subjecting it to a cold working at a 10% or more reduction of area, and subjecting it once or more to an aging treatment of additionally heating and maintaining it at 550.degree. to 850.degree. C.; and a method for preparing the aforesaid alloy by subjecting the alloy having the identical composition to a hot working at 850.degree. to 1,250.degree. C. at a draft percentage of 20% or more, heating and maintaining the alloy at 980.degree. to 1,200.degree. C., cooling it, and subjecting it once or more to an aging treatment of additionally heating and maintaining it at 550.degree. to 850.degree. C.

    摘要翻译： 本发明涉及在高温高压水中耐应力腐蚀开裂性优异的高强度Ni基合金，其特征在于，以重量比计，基本上以0.08％以下的C，0.15 ，Si：0.1〜1％，Fe：15％以下，Cr：20〜30％，Ti：3.5％以下，Al：2％以下，Nb：7％ 的Ni，其在γ基中具有γ'相和γ'相中的至少一种，并且半结晶地主要在晶界中沉淀M23C6; 通过加热和保持具有相同组成的合金在980℃至1200℃下制备该高强度Ni基合金的方法，冷却，并对其进行一次或多次以进行额外加热并保持其的时效处理 在550℃至850℃。 通过加热和保持具有相同组成的合金在980℃至1200℃下制备上述合金的方法，冷却，以10％以上的面积减少进行冷加工，并使其经受一次或 更多的是老化处理，另外加热并保持在550℃至850℃。 以及通过对具有相同组成的合金进行850〜1250℃的热加工，以20％以上的牵伸百分比进行制造的方法，加热并保持合金在980〜1200℃ 对其进行冷却，一次或多次进行额外加热的时效处理，并保持在550〜850℃。

    Method for thermal treatment of nickel based alloy materials
    2.
    发明授权
    Method for thermal treatment of nickel based alloy materials 失效
    镍基合金材料热处理方法

    公开(公告)号：US4710237A

    公开(公告)日：1987-12-01

    申请号：US815774

    申请日：1986-01-02

    申请人： Toshio Yonezawa ,  Nobuya Sasaguri ,  Kichiro Onimura ,  Hiroshi Susukida ,  Katsuji Kawaguchi ,  Hiroo Nagano ,  Takao Minami ,  Kazuo Yamanaka ,  Yasutaka Okada ,  Mamoru Inoue

    发明人： Toshio Yonezawa ,  Nobuya Sasaguri ,  Kichiro Onimura ,  Hiroshi Susukida ,  Katsuji Kawaguchi ,  Hiroo Nagano ,  Takao Minami ,  Kazuo Yamanaka ,  Yasutaka Okada ,  Mamoru Inoue

    IPC分类号： C22C19/05 ,  C22F1/00 ,  C22F1/10

    CPC分类号： C22C19/05 ,  C22F1/10

    摘要： A method for a thermal treatment of a nickel based alloy, characterized in that said nickel based alloy for a material which will be subjected to a high-temperature and high-pressure water or vapor comprises, in terms of % by weight, 58% or more of Ni, 25 to 35% of Cr, 0.003% or less of B, 0.012 to 0.035% of C, 1% or less of Mn, 0.5% or less of Si, 0.015% or less of P, 0.015% or less of S, and the residue of Fe and usual impurities; in a first thermal treatment process, said nickel based alloy is heated and retained at a temperature of T.degree. C. to (T+100).degree.C. and is cooled at a cooling rate of a furnace cooling rate or more; and in a second thermal treatment process, said nickel based alloy is then retained at a temperature of 600.degree. to 750.degree. C. and at a temperature within a sensitization recovery range for a period of 0.1 to 100 hours and is cooled at a cooling rate of said furnace cooling rate or more.

    摘要翻译： 一种镍基合金的热处理方法，其特征在于，用于经受高温高压水或蒸汽的材料的所述镍基合金以重量％计含有58％或 较多的Ni，25〜35％的Cr，0.003％以下的B，0.012〜0.035％的C，1％以下的Mn，0.5％以下的Si，0.015％以下的P，0.015％以下 的S，以及Fe和常规杂质的残留物; 在第一热处理工艺中，将所述镍基合金在T℃至（T + 100）℃的温度下加热并保持，并以炉冷却速率或更高的冷却速率冷却; 然后在第二热处理工艺中，然后将所述镍基合金保持在600至750℃的温度和在致敏恢复范围内的温度下进行0.1至100小时的时间，并以冷却速率 所述炉冷却速度或更高。

    Nickel-chromium alloy in stress corrosion cracking resistance
    3.
    发明授权
    Nickel-chromium alloy in stress corrosion cracking resistance 失效
    镍铬合金的应力腐蚀开裂性

    公开(公告)号：US4715909A

    公开(公告)日：1987-12-29

    申请号：US878398

    申请日：1986-06-19

    申请人： Takao Minami ,  Hiroo Nagano ,  Kazuo Yamanaka ,  Yasutaka Okada ,  Hiroshi Susukida ,  Kichiro Onimura ,  Toshio Yonezawa ,  Nobuya Sasaguri

    发明人： Takao Minami ,  Hiroo Nagano ,  Kazuo Yamanaka ,  Yasutaka Okada ,  Hiroshi Susukida ,  Kichiro Onimura ,  Toshio Yonezawa ,  Nobuya Sasaguri

    IPC分类号： C22C19/05 ,  C22F1/10

    CPC分类号： C22F1/10 ,  C22C19/05

    摘要： A nickel-chromium alloy excellent in a stress corrosion cracking resistance which is obtained by carrying out an annealing treatment under specific conditions, said alloy having the following composition:______________________________________ in terms of % by weight, ______________________________________ 0.04% or less of C; 1.0% or less of Si; 1.0% or less of Mn; 0.030% or less of P; 0.02% or less of S; 40 to 70% of Ni; 25 to 35% of Cr; 0.1 to 0.5% of Al; 0.05 to 1.0% of Ti; 0.5 to 5.0% in all of one or more of Mo, W and V, and ______________________________________ the residue comprising substantially Fe. A nickel-chromium alloy further including 0.2 to 5.0% of Nb subject to Ti=0.2 to 1.0% and Nb/C=10 to 125.

    摘要翻译： 通过在特定条件下进行退火处理获得的耐应力腐蚀开裂性优异的镍铬合金，所述合金具有以下组成： - 以重量％计，-0.04％以下的C; 1.0％以下的Si; -1.0％以下的Mn; 0.030％以下的P; -0.02％以下的S; 40〜70％的Ni; -25〜35％的Cr; 0.1〜0.5％的Al; -0.05〜1.0％的Ti; 在Mo，W和V中的一种或多种中的一种或多种中为-0.5至5.0％，以及 - 基本上包含Fe的残余物。 进一步含有Ti = 0.2〜1.0％，Nb / C = 10〜125的Nb为0.2〜5.0％的镍铬合金。

    Method and facility for manufacturing seamless steel pipe
    4.
    发明授权
    Method and facility for manufacturing seamless steel pipe 失效
    无缝钢管制造方法及设备

    公开(公告)号：US5873960A

    公开(公告)日：1999-02-23

    申请号：US809641

    申请日：1997-03-26

    申请人： Kunio Kondo ,  Yasutaka Okada ,  Seiji Tanimoto

    发明人： Kunio Kondo ,  Yasutaka Okada ,  Seiji Tanimoto

    IPC分类号： B21B1/46 ,  B21B23/00 ,  C21D8/10 ,  C21D8/06

    CPC分类号： B21B23/00 ,  C21D8/10 ,  B21B1/466

    摘要： The manufacturing method of the present invention comprises steps (1) through (8) which are sequentially arranged, and the steps or equipment from the production of billets to end products are connected in the same single continuous manufacturing line:(1) a step of producing a round billet by continuous casting,(2) a step of cooling the billet to a temperature not higher than an A.sub.r1 transformation temperature,(3) a step of heating the billet to a temperature which allows piercing of the billet,(4) a step of piercing, at a strain rate of not higher than 200/sec, the billet to obtain a hollow shell,(5) a step to form a steel pipe by elongating and finish rolling the hollow shell using a continuous elongating mill and a finish rolling mill which are directly connected to each other, at a predetermined average strain rate, a predetermined reduction ratio, and at a predetermined finishing temperature,(6) a step of recrystallizing the steel pipe at a temperature of not lower than an Ar.sub.r3 transformation temperature,(7) a step of quenching the steel pipe from a temperature not lower than an A.sub.r3 transformation temperature, and(8) a step of tempering the steel pipe.

    摘要翻译： 本发明的制造方法包括依次布置的步骤（1）至（8），并且从生产坯料到终端产品的步骤或设备连接在相同的单个连续生产线中：（1）步骤 （2）将坯料冷却至不高于Ar1相变温度的步骤，（3）将坯料加热至允许穿孔的温度的步骤，（4） 以不高于200 /秒的应变速率穿过坯料以获得中空壳的步骤，（5）通过使用连续延伸研磨机对中空壳进行伸长和精轧而形成钢管的步骤，以及 以预定的平均应变率，规定的压下率，规定的终轧温度直接连接的精轧机（6）在不低于Ar的温度下对钢管进行再结晶的工序 r3转变温度，（7）从不低于Ar3相变温度的温度淬火钢管的工序，（8）回火钢管的工序。

    Precipitation-hardening nickel-base alloy and method of producing same
    5.
    发明授权
    Precipitation-hardening nickel-base alloy and method of producing same 失效
    沉淀硬化镍基合金及其制造方法

    公开(公告)号：US4652315A

    公开(公告)日：1987-03-24

    申请号：US622288

    申请日：1984-06-19

    申请人： Masaaki Igarashi ,  Yasutaka Okada ,  Kunihiko Yoshikawa ,  Takeo Kudo

    发明人： Masaaki Igarashi ,  Yasutaka Okada ,  Kunihiko Yoshikawa ,  Takeo Kudo

    IPC分类号： C22C19/05 ,  C22C30/00 ,  C22F1/10

    CPC分类号： C22C30/00 ,  C22C19/055

    摘要： A precipitation-hardening Ni-base alloy exhibiting improved resistance to corrosion under a corrosive environment containing at least one of hydrogen sulfide, carbon dioxide and chloride ions and method of producing the same are disclosed. The alloy is of the .gamma."-phase, or (.gamma.'+.gamma.")-phase precipitation hardening type in which Ti is restricted to less than 0.40% and is comprised of:C: not greater than 0.050%,Si: not greater than 0.50%,Mn: not greater than 2.0%,Ni: 40-60%,Cr: 18-27%,Ti: less than 0.40%,Mo: 2.5-5.5% and/or W: not greater than 11%, t 2.5%.ltoreq.Mo+1/2W.ltoreq.5.5%,Al: not greater than than 2.0%,Nb: 2.5-6.0% and/or Ta: not greater than 2.0%, 2.5%.ltoreq.Nb+1/2Ta.ltoreq.6.0%.

    摘要翻译： 公开了一种在包含硫化氢，二氧化碳和氯化物离子中的至少一种的腐蚀环境下具有改善的耐腐蚀性的沉淀硬化Ni基合金及其制造方法。 该合金是γ“相，或（γ'+γ”）相沉淀硬化型，其中Ti限制在小于0.40％，由以下组成：C：不大于0.050％，Si： 不大于0.50％，Mn：不大于2.0％，Ni：40-60％，Cr：18-27％，Ti：小于0.40％，Mo：2.5-5.5％和/或W：不大于11 ％，t 2.5％

    High strength steel member with a low yield ratio
    6.
    发明授权
    High strength steel member with a low yield ratio 失效
    高强度钢构件，屈服比低

    公开(公告)号：US5449420A

    公开(公告)日：1995-09-12

    申请号：US286217

    申请日：1994-08-05

    申请人： Yasutaka Okada ,  Yasuhide Fujioka

    发明人： Yasutaka Okada ,  Yasuhide Fujioka

    IPC分类号： C21D8/00 ,  C21D1/18 ,  C21D1/28 ,  C21D8/02 ,  C21D8/10 ,  C22C38/00 ,  C22C38/18 ,  C22C38/54

    CPC分类号： C21D8/10 ,  C21D1/28 ,  C21D8/0263 ,  C21D1/18 ,  C21D2211/002 ,  C21D2211/008 ,  C21D8/00 ,  C21D8/0273 ,  Y10S148/909

    摘要： A high tensile strength, low yield ratio steel member has a steel composition consisting essentially of, by weight:C: 0.15-0.40%, Si: 0.10-0.70%, Mn: 1.0-2.7%,Cr: 1.0-3.5%, sol.Al: 0.01-0.05%,P: not larger than 0.025%, S: not larger than 0.015%,Mo: 0-1.0% Ni: 0-2.5%,V: 0-0.10%, Ti: 0-0.10%, Nb: 0-0.10%,B: 0-0.0050%.Fe and incidental impurities: balance the below-described bainite index (%) of the steel composition being 0-50%, the steel being comprised of a single phase of martensite or a martensite and bainite duplex structure containing 50% or less of bainite.Bainite Index (%)=-209 C+43Si-48Mn-58Cr-0.416R+317wherein R is a cooling rate (.degree.C./min).

    摘要翻译： 高拉伸强度低屈服比的钢构件具有基本上由以下组成的钢组成：C：0.15-0.40％，Si：0.10-0.70％，Mn：1.0-2.7％，Cr：1.0-3.5％，溶胶 Al：0.01-0.05％，P：不大于0.025％，S：不大于0.015％，Mo：0-1.0％Ni：0-2.5％，V：0-0.10％，Ti：0-0.10％ ，Nb：0〜0.10％，B：0〜0.0050％。 Fe和偶然杂质：将钢组成的下述贝氏体指数（％）平衡为0-50％，该钢由马氏体的单相或含有50％以下的贝氏体的马氏体和贝氏体双相结构构成。 贝氏体指数（％）= - 209 C + 43Si-48Mn-58Cr-0.416R + 317其中R为冷却速度（℃/ min）。

    Method of producing tool steels
    9.
    发明授权
    Method of producing tool steels 有权
    生产工具钢的方法

    公开(公告)号：US06478898B1

    公开(公告)日：2002-11-12

    申请号：US09664766

    申请日：2000-09-19

    申请人： Tomoaki Sera ,  Masahide Umino ,  Yasutaka Okada ,  Kunio Kondo

    发明人： Tomoaki Sera ,  Masahide Umino ,  Yasutaka Okada ,  Kunio Kondo

    IPC分类号： C21D1100

    CPC分类号： C21D1/25 ,  C21D6/004 ,  C22C38/06 ,  C22C38/44 ,  C22C38/46

    摘要： A method of producing a tool steel comprises quenching a steel containing, by mass percent, C: 0.25 to 0.60%, Si: 0.10 to 1.20%, Mn: 0.20 to 1.50%, Ni: 0.50 to 2.00%, Cr: 1.00 to 4.20%, Mo: 0.30 to 2.00%, V: 0.10 to 1.00% and Al: 0.005 to 0.10%, in order to obtain a hardness H such that the hardness index defined below by the formula (1) becomes between 0.20 to 0.95; and then tempering the steel; K=(H−H2)/(H1−H2)  (1) Where H1: Vickers hardness of the steel with 10 mm thickness after heating to a temperature of the Ac3 transformation point plus 50° C., and quenching into water; H2: Vickers hardness of the steel with 10 mm thickness after heating to the same temperature as defined above, and cooling to room temperature over 20 hours.

    摘要翻译： 制造工具钢的方法包括以质量％计含有C：0.25〜0.60％，Si：0.10〜1.20％，Mn：0.20〜1.50％，Ni：0.50〜2.00％，Cr：1.00〜4.20 ％，Mo：0.30〜2.00％，V：0.10〜1.00％，Al：0.005〜0.10％，以获得如下式（1）所示的硬度指数为0.20〜0.95的硬度H; 然后回火钢;其中H1：加热后的厚度为10mm的钢的维氏硬度到Ac3相变点的温度加上50℃，淬火成水; H2：厚度为10mm的钢的维氏硬度 加热到与上述相同的温度，并在20小时内冷却至室温。