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1. 发明申请

WO2015193542A1 DUPLEX STAINLESS STEEL 审中-公开
标题翻译：双相不锈钢
公开(公告)号：WO2015193542A1
公开(公告)日：2015-12-23
申请号：PCT/FI2015/050415
申请日：2015-06-11
申请人： OUTOKUMPU OYJ
发明人： OLIVER, James , JONSSON, Jan, Y.
IPC分类号： C22C38/42 , C22C38/44 , C22C38/02 , C22C38/04 , C22C38/00 , C22C38/58
CPC分类号： C22C38/44 , C21D2211/001 , C21D2211/005 , C22C38/00 , C22C38/001 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/42 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/52 , C22C38/54 , C22C38/58
摘要： The invention relates to a duplex ferritic austenitic stainless steel having high formability utilizing the TRIP effect and high corrosion resistance with the high pitting resistance equivalent. The duplex stainless steel contains less than 0,04 weight % carbon, 0,2 - 0,8 weight % silicon, 0,3 - 2,0 weight % manganese, 4,0 - 19,0 weight % chromium, 2,0 - 5,0 weight % nickel, 4,0 - 7,0 weight % molybdenum, less than 4,5 weight % tungsten, 0,1 - 1,5 weight % copper, 0,14 - 0,23 weight % nitrogen, the rest being iron and inevitable impurities occurring in stainless steels. Further, the co-effect of the chromium, molybdenum and tungsten contents in weight % is in the range of 20
摘要翻译：本发明涉及一种利用TRIP效应具有高成型性和高耐蚀性等级的双相铁素体奥氏体不锈钢。双相不锈钢含有小于0.04重量％的碳，0.2至0.8重量％的硅，0.3-3.0重量％的锰，4.0-0.19重量％的铬，2.0 - 5.0重量％的镍，4.0-0.7重量％的钼，小于4.5重量％的钨，0.1-1.5重量％的铜，0-14-0.23重量％的氮，其余的是不锈钢中铁和不可避免的杂质。此外，铬，钼和钨含量的重量％的共同作用在20 <（Cr + Mo + 0.5W）<23.5的范围内，其中Cr /（Mo + 0.5W）在2 - 4,75的范围内。

2. 发明申请

WO2015114222A1 DUPLEX STAINLESS STEEL 审中-公开
标题翻译：双相不锈钢
公开(公告)号：WO2015114222A1
公开(公告)日：2015-08-06
申请号：PCT/FI2015/050065
申请日：2015-02-02
申请人： OUTOKUMPU OYJ
发明人： OLIVER, James , JONSSON, Jan Y.
IPC分类号： C22C38/42 , C22C38/44 , C22C38/00 , C22C38/02 , C22C38/04
CPC分类号： C22C38/58 , C21D2211/001 , C21D2211/005 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/40 , C22C38/42 , C22C38/44
摘要： The invention relates to a duplex ferritic austenitic stainless steel having high formability utilizing the TRIP effect and high corrosion resistance with the balanced pitting resistance equivalent. The duplex stainless steel contains less than 0,04 weight % carbon, 0,2 - 0,8 weight % silicon, less than 2,0 weight % manganese, 16,5 - 19,5 weight % chromium, 3,0 - 4,7 weight % nickel, 1,5 - 4,0 weight % molybdenum, less than 3,5 weight % tungsten, less than 1 weight % copper, 0,13 - 0,26 weight % nitrogen, the rest being iron and inevitable impurities occurring in stainless steels.
摘要翻译：本发明涉及一种利用TRIP效应具有高成型性和高耐腐蚀性并具有平衡点蚀电阻当量的双相铁素体奥氏体不锈钢。双相不锈钢含有小于0.04重量％的碳，0.2至0.8重量％的硅，小于2.0重量％的锰，16.5至19.5重量％的铬，3.0-4 ，7重量％的镍，1.5-4.0重量％的钼，小于3.5重量％的钨，小于1重量％的铜，0.13-0.26重量％的氮，其余是铁和不可避免的杂质发生在不锈钢中。

3. 发明申请

WO2015086903A1 METHOD FOR PRODUCING HIGH-STRENGTH DUPLEX STAINLESS STEEL 审中-公开
标题翻译：生产高强度双相不锈钢的方法
公开(公告)号：WO2015086903A1
公开(公告)日：2015-06-18
申请号：PCT/FI2014/050978
申请日：2014-12-10
申请人： OUTOKUMPU OYJ
发明人： OLIVER, James , ANDERSSON, Jan-Olof , SCHEDIN, Erik
IPC分类号： C21D6/00 , C21D7/02 , C21D8/00 , C22C38/40 , C21D8/02
CPC分类号： C21D9/48 , C21D1/26 , C21D6/02 , C21D7/02 , C21D7/10 , C21D8/02 , C21D8/0405 , C21D8/0436 , C21D8/0442 , C21D2211/001 , C21D2211/005 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/06 , C22C38/40 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/52 , C22C38/54 , C22C38/58
摘要： The invention relates to a method for producing a high-strength ferritic austenitic duplex stainless steel with the TRIP (Transformation induced plasticity) effect with deformation. After the heat treatment on the temperature range of 950 –1150˚C in order to have high tensile strength level of at least 1000 MPa with retained formability the ferritic austenitic duplex stainless steel is deformed with a reduction degree of at least 10%, preferably at least 20% so that with a reduction degree of 20% the elongation (A 50 ) is at least 15%.
摘要翻译：本发明涉及一种具有TRIP（变形诱导塑性）变形效应的高强度铁素体奥氏体双相不锈钢的制造方法。在950〜1150℃的温度范围内进行热处理之后，为了具有至少1000MPa的高拉伸强度水平并保持成形性，铁素体奥氏体双相不锈钢以至少10％的还原度变形，优选在至少20％，以减少20％的伸长率（A50）为至少15％。

4. 发明申请

WO2014199019A1 DUPLEX FERRITIC AUSTENITIC STAINLESS STEEL 审中-公开
标题翻译：双相不锈钢奥氏体不锈钢
公开(公告)号：WO2014199019A1
公开(公告)日：2014-12-18
申请号：PCT/FI2014/050476
申请日：2014-06-12
申请人： OUTOKUMPU OYJ
发明人： OLIVER, James , SCHEDIN, Erik , PETTERSSON, Rachel
IPC分类号： C22C38/42 , C22C38/44 , C22C38/54 , C22C38/58
CPC分类号： C22C38/58 , C21D6/002 , C21D9/0081 , C21D2211/001 , C21D2211/005 , C22C38/001 , C22C38/005 , C22C38/02 , C22C38/40 , C22C38/42 , C22C38/44 , C22C38/54
摘要： The invention relates to a duplex ferritic austenitic stainless steel having 40 - 60 volume % ferrite and 40 - 60 volume % austenite, preferably 45 - 55 volume % ferrite and 45 - 55 volume % austenite at the annealed condition, and having improved cold workability and impact toughness. The stainless steel contains in weight % less than 0,07 % carbon (C), 0,1 - 2,0 % silicon (Si), 3 - 5 % manganese (Mn), 19 - 23 % chromium (Cr), 1,1 - 1,9 % nickel (Ni), 1,1 - 3,5 % copper (Cu), 0,18 - 0,30 % nitrogen (N), optionally molybdenum (Mo) and/or tungsten (W) in a total amount calculated with the formula (Mo + ½W) eq ) and the nickel equivalent (Ni eq ): 20 eq eq > 10, where Cr eq = Cr + 1,5Si + Mo + 2Ti + 0,5Nb Ni eq = Ni + 0,5Mn + 30(C+N) + 0,5(Cu+Co)
摘要翻译：本发明涉及在退火条件下具有40-60体积％铁素体和40-60体积％奥氏体，优选45-55体积％铁素体和45-55体积％奥氏体的双相铁素体奥氏体不锈钢，并且具有改进的冷加工性和冲击韧性。不锈钢含有重量百分比小于0.07％的碳（C），0.1-2.0％的硅（Si），3-5％的锰（Mn），19-23％的铬（Cr），1 ，1-19％的镍（Ni），1,1 - 3,5％的铜（Cu），0.18 - 0,30％的氮（N），任选的钼（Mo）和/或钨（W）（Mo +½W）<1,0％，任选0.0011-0,005％硼（B），任选地至多0.03％的铈（Ce）和/或钙（Ca）的总量计，在铁素体和奥氏体成形体的条件下，即铬当量（Creq）和镍当量（Nieq）：20 10时，余量为铁（Fe）和可回收杂质，其中Creq = Cr + 1,5Si + Mo + 2Ti + 0.5Nb Nieq = Ni + 0.5Mn + 30（C + N）+0.5（Cu + Co）

5. 发明申请

WO2022049051A1 AUSTENITIC STAINLESS STEEL 审中-公开
公开(公告)号：WO2022049051A1
公开(公告)日：2022-03-10
申请号：PCT/EP2021/073959
申请日：2021-08-31
申请人： OUTOKUMPU OYJ
发明人： OLIVER, James , JONSSON, Jan, Y
IPC分类号： C21D6/00 , C22C38/00 , C22C38/44 , C22C38/02 , C22C38/04 , C22C38/42 , C22C38/46 , C22C38/58 , C21D9/46
摘要： Austenitic stainless steel utilizing the TRIP effect with a balanced pitting resistance equivalent for high corrosion resistance. The austenitic stainless steel contains 0-0.04 weight % C, 0.2-0.8 weight % Si, 0-2.0 weight % Mn, 16.0-19.0 weight % Cr, 4.0-6.5 weight % Ni, 1.0-4.0 weight % Mo, 0-4.0 weight % W, 0-2.0 weight % Cu, 0.20-0.30 weight % N, the rest being iron and inevitable impurities occurring in stainless steels, the proportion of the ferrite phase in the microstructure is 0-10.0 volume %, the rest being austenite, when quenched and heat treated at the temperature range of 900 – 1200 oC, preferably 950 - 1150 oC.

6. 发明申请

WO2011135170A1 METHOD FOR MANUFACTURING AND UTILIZING FERRITIC-AUSTENITIC STAINLESS STEEL WITH HIGH FORMABILITY 审中-公开
标题翻译：制造和利用具有高度可塑性的不锈钢不锈钢的方法
公开(公告)号：WO2011135170A1
公开(公告)日：2011-11-03
申请号：PCT/FI2011/050345
申请日：2011-04-18
申请人： OUTOKUMPU OYJ , OLIVER, James , JONSSON, Jan Y. , TALONEN, Juho
发明人： OLIVER, James , JONSSON, Jan Y. , TALONEN, Juho
IPC分类号： C22C38/00
CPC分类号： C22C38/02 , C21D6/002 , C21D6/005 , C21D2201/02 , C21D2211/001 , C21D2211/005 , C22C38/001 , C22C38/42 , C22C38/58
摘要： The invention relates to a method for manufacturing a ferritic-austenitic stainless steel having good formability and high elongation. The stainless steel is heat treated so that the microstructure of the stainless steel contains 45 - 75 % austenite in the heat treated condition, the remaining microstructure being ferrite, and the measured M d30 temperature of the stainless steel is adjusted between 0 and 50 °C in order to utilize the transformation induced plasticity (TRIP) for improving the formability of the stainless steel.
摘要翻译：本发明涉及一种具有良好的成形性和高伸长率的铁素体 - 奥氏体不锈钢的制造方法。对不锈钢进行热处理，使得不锈钢的微结构在热处理条件下含有45-75％的奥氏体，其余的微结构为铁素体，并且将不锈钢的测量的Md30温度调节在0至50℃之间以利用转化诱导塑性（TRIP）改善不锈钢的成型性。

7. 发明申请

WO2022074229A1 METHOD FOR PRODUCING STAINLESS STEEL 审中-公开
公开(公告)号：WO2022074229A1
公开(公告)日：2022-04-14
申请号：PCT/EP2021/077932
申请日：2021-10-08
申请人： OUTOKUMPU OYJ
发明人： JONSSON, Jan, Y. , OLIVER, James , LIMBACH-MALYAR, Nataliya , HEDSTRÖM, Peter
IPC分类号： C21D1/18 , C21D6/00 , C21D10/00
摘要： A method of supressing embrittlement of stainless steel in a stainless steel production process comprising the steps of • manufacturing stainless steel in a conventional stainless steel manufacturing process • annealing the stainless steel in an annealing step • cooling the steel in a cooling step or quenching the steel in a quenching step and • applying a magnetic field to the stainless steel during the cooling or quenching step

8. 发明申请

WO2013034804A1 DUPLEX STAINLESS STEEL 审中-公开
标题翻译：双相不锈钢
公开(公告)号：WO2013034804A1
公开(公告)日：2013-03-14
申请号：PCT/FI2012/050858
申请日：2012-09-05
申请人： OUTOKUMPU OYJ , OLIVER, James , JONSSON, Jan Y. , THULIN, Alexander
发明人： OLIVER, James , JONSSON, Jan Y. , THULIN, Alexander
IPC分类号： C22C38/02 , C22C38/42 , C22C38/44 , C22C38/58
CPC分类号： C22C38/58 , C21D6/004 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/42 , C22C38/44
摘要： The invention relates a duplex ferritic austenitic stainless steel having high formability utilizing the TRIP effect and high corrosion resistance with the balanced pitting resistance equivalent. The duplex stainless steel contains less than 0,04 weight % carbon, less than 0,7 weight % silicon, less than 2,5 weight % manganese, 18,5-22,5 weight % chromium, 0,8-4,5 weight % nickel, 0,6-1,4 weight % molybdenum, less than 1 weight % copper, 0,10-0,24 weight % nitrogen, the rest being iron and inevitable impurities occurring in stainless steels.
摘要翻译：本发明涉及利用TRIP效应具有高成型性的双相铁素体奥氏体不锈钢，具有均匀耐点蚀性等效物的高耐腐蚀性。双相不锈钢含有小于0.04重量％的碳，少于0.7重量％的硅，小于2.5重量％的锰，18.5-22.5重量％的铬，0.8-4.5 重量％的镍，0.6-1.4重量％的钼，小于1重量％的铜，0,10-0.24重量％的氮，其余是铁和不可避免的杂质以不锈钢的形式存在。

9. 发明申请

WO2012143610A1 METHOD FOR MANUFACTURING AND UTILIZING FERRITIC-AUSTENITIC STAINLESS STEEL 审中-公开
标题翻译：制造和使用铁素体不锈钢的方法
公开(公告)号：WO2012143610A1
公开(公告)日：2012-10-26
申请号：PCT/FI2012/050379
申请日：2012-04-18
申请人： OUTOKUMPU OYJ , OLIVER, James , JONSSON, Jan Y. , TALONEN, Juho , PETTERSSON, Rachel , ANDERSSON, Jan-Olof
发明人： OLIVER, James , JONSSON, Jan Y. , TALONEN, Juho , PETTERSSON, Rachel , ANDERSSON, Jan-Olof
IPC分类号： C22C38/00 , C21D6/00 , C22C38/02 , C22C38/04 , C22C38/08 , C22C38/16 , C22C38/44
CPC分类号： C21D6/004 , C21D1/26 , C21D1/42 , C21D6/002 , C21D6/005 , C21D2211/001 , C21D2211/005 , C22C38/001 , C22C38/02 , C22C38/42 , C22C38/44 , C22C38/58 , Y02P10/253
摘要： The invention relates to a method for manufacturing a ferritic-austenitic stainless steel having good formability, good weldability and high elongation. The stainless steel containing the sum of carbon and nitrogen C+N in the range 0,17 - 0,295 in weight % in which sum C+N a lower carbon content to avoid sensitisation during welding is compensated by an increased nitrogen content to maintain formability is heat treated so that the microstructure of the stainless steel contains 45-75 % austenite in the heat treated condition, the remaining microstructure being ferrite, and the measured M d30 temperature of the stainless steel is adjusted between 0 and 50 °C in order to utilize the transformation induced plasticity (TRIP) for improving the formability of the stainless steel.
摘要翻译：本发明涉及一种具有良好的成型性，良好的焊接性和高伸长率的铁素体 - 奥氏体不锈钢的制造方法。含有碳和氮C + N之和的不锈钢C + N的重量百分比范围为0,17 - 0,295，其中总和C + N较低的碳含量，以避免焊接过程中的敏化，由氮含量增加来维持成型性热处理使得不锈钢的微观组织在热处理条件下含有45-75％的奥氏体，剩余的微结构为铁素体，并且将不锈钢的测量的Md30温度调节在0至50℃之间，以便利用转化诱导塑性（TRIP），用于提高不锈钢的成型性。

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