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    FERRITIC-AUSTENITIC STAINLESS STEEL
    2.
    发明申请
    FERRITIC-AUSTENITIC STAINLESS STEEL 有权
    不锈钢不锈钢

    公开(公告)号：US20110250088A1

    公开(公告)日：2011-10-13

    申请号：US13140422

    申请日：2009-12-17

    申请人： Peter Samuelsson ,  Simon Lille ,  Jan-Olof Andersson ,  Mats Liljas ,  Erik Schedin ,  Pelle Johansson

    发明人： Peter Samuelsson ,  Simon Lille ,  Jan-Olof Andersson ,  Mats Liljas ,  Erik Schedin ,  Pelle Johansson

    IPC分类号： C22C38/58 ,  C22C38/06 ,  C22C38/02 ,  C22C38/42 ,  C22C38/44

    CPC分类号： C22C38/001 ,  C21D8/02 ,  C21D8/0226 ,  C21D8/0273 ,  C21D8/06 ,  C21D8/08 ,  C21D2211/001 ,  C21D2211/005 ,  C22C38/02 ,  C22C38/42 ,  C22C38/44 ,  C22C38/58

    摘要： The invention relates to a duplex stainless steel having austenitic-ferritic microstructure of 35-65% by volume, preferably 40-60% by volume of ferrite and having good weldability, good corrosion resistance and good hot workability. The steel contains 0.005-0.04% by weight carbon, 0.2-0.7% by weight silicon, 2.5-5% by weight manganese, 23-27% by weight chromium, 2.5-5% by weight nickel, 0.5-2.5% by weight molybdenum, 0.2-0.35% by weight nitrogen, 0.1-1.0% by weight copper, optionally less than 1% by weight tungsten, less than 0.0030% by weight one or more elements of the group containing boron and calcium, less than 0.1% by weight cerium, less than 0.04% by weight aluminium, less than 0.010% by weight sulphur and the rest iron with incidental impurities.

    摘要翻译： 本发明涉及具有35-65体积％，优选40-60体积％的铁素体的奥氏体 - 铁素体显微组织和具有良好的可焊性，良好的耐腐蚀性和良好的热加工性的双相不锈钢。 钢含有0.005-0.04重量％的碳，0.2-0.7重量％的硅，2.5-5重量％的锰，23-27重量％的铬，2.5-5重量％的镍，0.5-2.5重量％的钼 ，0.2-0.35重量％的氮，0.1-1.0重量％的铜，任选地小于1重量％的钨，小于0.0030重量％的含硼和钙的一种或多种元素，小于0.1重量％ 铈，小于0.04重量％的铝，小于0.010重量％的硫，剩余的铁与附带的杂质。

    Austenitic Steel and a Steel Product
    4.
    发明申请
    Austenitic Steel and a Steel Product 有权
    奥氏体钢和钢铁产品

    公开(公告)号：US20080095656A1

    公开(公告)日：2008-04-24

    申请号：US11722870

    申请日：2005-12-28

    申请人： Hachemi Loucif ,  Mats Liljas

    发明人： Hachemi Loucif ,  Mats Liljas

    IPC分类号： C22C38/42 ,  C22C38/58

    CPC分类号： C22C38/001 ,  C22C38/44

    摘要： High-alloy austenitic stainless steels that are extra resistant to pitting and crevice corrosion in aggressive, chloride-containing solutions have a tendency for macro-segregation of Mo, at solidification of the melt. This problem is solved by a super austenite stainless steel having the following composition, in % by weight: max 0.03 C, max 0.5 Si, max 6 Mn, 28-30 Cr, 21-24 Ni, 4-6% (Mo+W/2), the content of W being max 0.7, 0.5-1.1 N, max 1.0 Cu, balance iron and impurities at normal contents originating from the production of the steel.

    摘要翻译： 在含腐蚀性的含氯化物溶液中具有特殊耐点蚀和缝隙腐蚀性的高合金奥氏体不锈钢在熔体凝固时具有大量偏析Mo的倾向。 该问题由具有以下组成的超奥氏体不锈钢以重量％计：最大0.03C，最大0.5Si，最大6Mn，28-30Cr，21-24Ni，4-6％（Mo + W / 2），W的含量最大为0.7,0.5-1.1 N，最大1.0 Cu，余量铁和正常含量的杂质来源于钢的生产。

    Austenitic iron and an iron product
    6.
    发明授权
    Austenitic iron and an iron product 有权
    奥氏体铁和铁制品

    公开(公告)号：US08119063B2

    公开(公告)日：2012-02-21

    申请号：US11722870

    申请日：2005-12-28

    申请人： Hachemi Loucif ,  Mats Liljas

    发明人： Hachemi Loucif ,  Mats Liljas

    IPC分类号： C22C38/38 ,  C22C38/22 ,  C22C30/00

    CPC分类号： C22C38/001 ,  C22C38/44

    摘要： High-alloy austenitic stainless steels that are extra resistant to pitting and crevice corrosion in aggressive, chloride-containing solutions have a tendency for macro-segregation of Mo, at solidification of the melt. This problem is solved by a super austenite stainless steel having the following composition, in % by weight: max 0.03 C, max 0.5 Si, max 6 Mn, 28-30 Cr, 21-24 Ni, 4-6% (Mo+W/2), the content of W being max 0.7, 0.5-1.1 N, max 1.0 Cu, balance iron and impurities at normal contents originating from the production of the steel.

    摘要翻译： 在含腐蚀性的含氯化物溶液中具有特殊耐点蚀和缝隙腐蚀性的高合金奥氏体不锈钢在熔体凝固时具有大量偏析Mo的倾向。 该问题由具有以下组成的超奥氏体不锈钢以重量％计：最大0.03C，最大0.5Si，最大6Mn，28-30Cr，21-24Ni，4-6％（Mo + W / 2），W的含量最大为0.7,0.5-1.1 N，最大1.0 Cu，余量铁和正常含量的杂质来源于钢的生产。

    Austenitic stainless steel with high molybdenum content
    8.
    发明授权
    Austenitic stainless steel with high molybdenum content 失效
    奥氏体不锈钢，钼含量高

    公开(公告)号：US4078920A

    公开(公告)日：1978-03-14

    申请号：US763598

    申请日：1977-01-28

    申请人： Mats Liljas ,  Jan Ingemar Fridberg ,  Hasse Sigverd Fredriksson

    发明人： Mats Liljas ,  Jan Ingemar Fridberg ,  Hasse Sigverd Fredriksson

    IPC分类号： C22C38/00 ,  C22C38/44 ,  C22C38/06 ,  C22C38/42

    CPC分类号： C22C38/44

    摘要： An austenitic stainless steel alloy having a high molybdenum content consisting essentially of up to 0.08% carbon, 0.01-0.8% silicon, 0.2-2.0% manganese, 17-25% chromium, 15-21% nickel, 6-10% molybdenum, 0.06-0.25% nitrogen and 0-2.0% copper and the balance of the contents of said alloy being iron with residual impurities. The alloys of the present invention have improved corrosion resistance and improved hot and cold ductility.

    摘要翻译： 一种具有高钼含量的奥氏体不锈钢合金，其基本上由至多0.08％的碳，0.01-0.8％的硅，0.2-2.0％的锰，17-25％的铬，15-21％的镍，6-10％的钼，0.06 -0.25％的氮和0-2.0％的铜，并且所述合金的含量的余量是含有残留杂质的铁。 本发明的合金具有改善的耐腐蚀性和改善的冷热延展性。

    Stainless steel
    10.
    发明授权
    Stainless steel 失效
    不锈钢

    公开(公告)号：US5196073A

    公开(公告)日：1993-03-23

    申请号：US861445

    申请日：1992-04-01

    申请人： Mats Liljas ,  Jaroslav Pleva ,  Peter Stenvall

    发明人： Mats Liljas ,  Jaroslav Pleva ,  Peter Stenvall

    IPC分类号： C22C38/44 ,  C22C38/50

    CPC分类号： C22C38/50 ,  C22C38/44

    摘要： A stainless steel having a two-phase structure of austenite and ferrite, the steel consisting essentially of in weight-% not more than 0.03% C, not more than 0.03% N, the total amount of C+N not being more than 0.05%, 1.5-2.5% Si, 0.5-2% Mn, not more than 0.03% P, not more than 0.010% S, 22-26% Cr, 8-11% Ni, 2-3% Mo, 0.35-0.55% Ti, % Cr+3.3.times.% Mo being at least 29.0, balance iron and impurities, said steel having been subjected to a heat treatment consisting of solution annealing in the temperature range 1100.degree.-1250.degree. C. and water quenching followed by aging in a temperature range 500.degree.-600.degree. C. for at least 30 min, wherein precipitates consisting essentially of Ni.sub.16 Ti.sub.6 Si.sub.7, so called G-phase, are precipitated in the form of particles evenly distibuted in the ferrite, said particles typically having a size of 10-50 .ANG., imparting the material an improved yield srength in the annealed and aged condition, said yield strength amounting to at least 800 MPa in combination with a Charpy V impact strength of at least 25 J, a critical pitting temperature (CPT) higher than about 50.degree. C. in 3% NaCl-solution at 200 mV SCE, and a pitting potential Ep in 0.1N-NaCl-solution, 80.degree. C., of at least about 300 mV SCE.

    摘要翻译： 具有奥氏体和铁素体的两相结构的不锈钢，该钢基本上以重量百分比不超过0.03％C，不大于0.03％N，C + N的总量不大于0.05％ ，1.5-2.5％Si，0.5-2％Mn，不大于0.03％P，不大于0.010％S，22-26％Cr，8-11％Ni，2-3％Mo，0.35-0.55％Ti ，％Cr + 3.3x％Mo至少为29.0，余量为铁和杂质，所述钢经过在1100〜1250℃的温度范围内的固溶退火组成的热处理，然后在 温度范围500°-600℃至少30分钟，其中基本上由Ni16Ti6Si7组成的析出物，即所谓的G相，以铁素体中均匀分布的颗粒形式沉淀，所述颗粒通常具有10倍的尺寸， 50 ANGSTROM，赋予材料在退火和老化条件下提高的屈服强度，所述屈服强度达到至少800MPa，与 至少25J的夏比V冲击强度，在200mV SCE下在3％NaCl溶液中的临界点蚀温度（CPT）高于约50℃，在0.1N-NaCl溶液中的点蚀电位Ep，80 至少约300 mV SCE。