公开(公告)号：US10407750B2

公开(公告)日：2019-09-10

申请号：US15103357

申请日：2014-12-10

申请人： Outokumpu Oyj

发明人： James Oliver ,  Jan-Olof Andersson ,  Erik Schedin

IPC分类号： C21D9/48 ,  C21D7/10 ,  C22C38/58 ,  C22C38/54 ,  C22C38/52 ,  C22C38/00 ,  C22C38/48 ,  C22C38/46 ,  C22C38/44 ,  C22C38/42 ,  C22C38/06 ,  C22C38/02 ,  C21D8/04 ,  C22C38/50 ,  C21D6/02 ,  C21D1/26 ,  C22C38/40 ,  C21D7/02 ,  C21D8/02

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 (A50) is at least 15%.

公开(公告)号：US20160319391A1

公开(公告)日：2016-11-03

申请号：US15103357

申请日：2014-12-10

申请人： OUTOKUMPU OYJ

发明人： James Oliver ,  Jan-Olof Andersson ,  Erik Schedin

IPC分类号： C21D9/48 ,  C21D7/10 ,  C22C38/58 ,  C22C38/54 ,  C22C38/52 ,  C22C38/00 ,  C22C38/48 ,  C22C38/46 ,  C22C38/44 ,  C22C38/42 ,  C22C38/06 ,  C22C38/02 ,  C21D8/04 ,  C22C38/50

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 (A50) 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℃的温度范围内的热处理之后，为了具有至少1000MPa的高拉伸强度水平和保持的成形性，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％。

公开(公告)号：US20150050180A1

公开(公告)日：2015-02-19

申请号：US14355866

申请日：2012-11-01

申请人： Outokumpu Oyj

发明人： Alexander Thulin ,  Jan Y. Jonsson ,  Mats Liljas ,  Rachel Pettersson ,  Jan-Olof Andersson ,  Staffan Hertzman

IPC分类号： C22C38/58 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C22C38/44 ,  C22C38/42

CPC分类号： C22C38/58 ,  C21D6/004 ,  C21D2211/005 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/42 ,  C22C38/44

摘要： The present invention relates to duplex ferritic austenitic stainless steel for the use chemical industry for nitric acid environments wherein good uniform corrosion resistance and high strength are required. The microstructure of the stainless steel has 35-65 volume % of ferrite, preferably 45-55 volume % of ferrite, the balance being austenite. The chemical composition contains less than 0.03 weight % carbon, less than 1 weight % silicon, less than 3 weight % manganese, 26-29.5 weight % chromium, 5-8.5 weight % nickel, 1-3 weight % molybdenum, 0.25-0.35 weight % nitrogen, 1-3 weight % copper, the rest being iron and inevitable impurities occurring in stainless steels.

摘要翻译： 本发明涉及使用化学工业用于需要良好的均匀耐腐蚀性和高强度的硝酸环境的双相铁素体奥氏体不锈钢。 不锈钢的微结构具有35-65体积％的铁素体，优选铁素体的45-55体积％，余量为奥氏体。 化学成分含有小于0.03重量％的碳，小于1重量％的硅，小于3重量％的锰，26-29.5重量％的铬，5-8.5重量％的镍，1-3重量％的钼，0.25-0.35重量％ ％氮，1-3重量％铜，其余为不锈钢中铁和不可避免的杂质。

公开(公告)号：US09637813B2

公开(公告)日：2017-05-02

申请号：US14355866

申请日：2012-11-01

申请人： Outokumpu Oyj

发明人： Alexander Thulin ,  Jan Y. Jonsson ,  Mats Liljas ,  Rachel Pettersson ,  Jan-Olof Andersson ,  Staffan Hertzman

IPC分类号： C22C38/58 ,  C22C38/02 ,  C22C38/04 ,  C22C38/44 ,  C22C38/00 ,  C22C38/42 ,  C21D6/00

CPC分类号： C22C38/58 ,  C21D6/004 ,  C21D2211/005 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/42 ,  C22C38/44

摘要： The present invention relates to duplex ferritic austenitic stainless steel for the use chemical industry for nitric acid environments wherein good uniform corrosion resistance and high strength are required. The microstructure of the stainless steel has 35-65 volume % of ferrite, preferably 45-55 volume % of ferrite, the balance being austenite. The chemical composition contains less than 0.03 weight % carbon, less than 1 weight % silicon, less than 3 weight % manganese, 26-29.5 weight % chromium, 5-8.5 weight % nickel, 1-3 weight % molybdenum, 0.25-0.35 weight % nitrogen, 1-3 weight % copper, the rest being iron and inevitable impurities occurring in stainless steels.