METHOD FOR PRODUCING HIGH-STRENGTH DUPLEX STAINLESS STEEL

    公开(公告)号:CA2932068A1

    公开(公告)日:2015-06-18

    申请号:CA2932068

    申请日:2014-12-10

    Applicant: OUTOKUMPU OY

    Abstract: 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 (A50) is at least 15%.

    DUPLEX FERRITIC AUSTENITIC STAINLESS STEEL

    公开(公告)号:CA2914774A1

    公开(公告)日:2014-12-18

    申请号:CA2914774

    申请日:2014-06-12

    Applicant: OUTOKUMPU OY

    Abstract: 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) 10, where Creq = Cr + 1,5Si + Mo + 2Ti + 0,5Nb Nieq = Ni + 0,5Mn + 30(C+N) + 0,5(Cu+Co)

    ACERO INOXIDABLE DUPLEX.
    65.
    发明专利

    公开(公告)号:MX2014002714A

    公开(公告)日:2014-07-30

    申请号:MX2014002714

    申请日:2012-09-05

    Applicant: OUTOKUMPU OY

    Abstract: La invención se relaciona a un acero inoxidable, austenítico, ferrítico y dúplex que tiene una alta formabilidad usando el efecto TRIP y una alta resistencia a la corrosión con el equivalente a resistencia a corrosión por picadura balanceado. El acero inoxidable dúplex contiene menos de 0.04% en peso de carbono, menos de 0.7% en pedo de silicio, menos de 2.5% de peso en manganeso, 18.5- 22.5 % en peso de cromo, 0.8 - 4.5% en peso de níquel, 0.6 - 1.4% de peso en molibdeno, menos de 1% en peso de cobre, 0.10-0.24% en peso de nitrógeno, el resto siendo hierro e impurezas inevitables que contiene el acero inoxidable.

    METHOD FOR MANUFATURING AND UTILIZING FERRITIC-AUSTENITIC STAINLESS STEEL WITH HIGH FORMABILITY

    公开(公告)号:ZA201207755B

    公开(公告)日:2013-12-23

    申请号:ZA201207755

    申请日:2012-10-16

    Applicant: OUTOKUMPU OY

    Abstract: 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 Md30 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.

    67.
    发明专利
    未知

    公开(公告)号:FI122657B

    公开(公告)日:2012-05-15

    申请号:FI20100178

    申请日:2010-04-29

    Applicant: OUTOKUMPU OY

    Abstract: 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 Md30 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.

    68.
    发明专利
    未知

    公开(公告)号:FI20100178A0

    公开(公告)日:2010-04-29

    申请号:FI20100178

    申请日:2010-04-29

    Applicant: OUTOKUMPU OY

    Abstract: 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 Md30 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.

    ACERO INOXIDABLE DUPLEX.
    69.
    发明专利

    公开(公告)号:MX394659B

    公开(公告)日:2025-03-24

    申请号:MX2016010013

    申请日:2016-08-02

    Applicant: OUTOKUMPU OY

    Abstract: La invención se relaciona con un acero inoxidable dúplex austenítico ferrítico que tiene alta formabilidad utilizando el efecto TRIP y alta resistencia a la corrosión con un equivalente de resistencia a corrosión por picaduras equilibrado. El acero inoxidable dúplex contiene menos de 0.04% en peso de carbono, 0.2-0.8% en peso de silicio, menos de 2.0% en peso de manganeso, 16.5-19.5% en peso de cromo, 3.0 - 4.7 % en peso de níquel, 1.4 - 4.0% en peso de molibdeno, menos de 3.5% en peso de tungsteno, menos de 1% en peso de cobre, 0.13 - 0.26% en peso de nitrógeno, el resto siendo fierro e impurezas inevitables que ocurren en aceros inoxidables.

    ACERO INOXIDABLE DÚPLEX.
    70.
    发明专利

    公开(公告)号:MX381743B

    公开(公告)日:2025-03-13

    申请号:MX2016016548

    申请日:2016-12-14

    Applicant: OUTOKUMPU OY

    Abstract: La invención se refiere a un acero inoxidable dúplex, ferrítico austenítico que tiene alta formabilidad y que utiliza el efecto TRIP y una alta resistencia a la corrosión con elevado equivalente de resistencia a corrosión por picaduras. El acero inoxidable dúplex contiene menos de 0.04% en peso de carbono, 0.2 - 0.8 % en peso de silicio, 0.3 - 2.0 % en peso de manganeso, 4.0-19.0 % en peso de cromo, 2.0-5.0 % en peso de níquel, 4.0-7.0 % en peso de molibdeno, menos de 4.5 % en peso de tungsteno, 0.1-1.5 % en peso de cobre, 0.14-0.23 % en peso de nitrógeno, el resto siendo fierro e impurezas inevitables que ocurren en los aceros inoxidables. Además, el co-efecto de los contenidos de cromo, molibdeno y tungsteno en % peso está en el rango de 20

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