公开(公告)号：US09650708B2

公开(公告)日：2017-05-16

申请号：US14117711

申请日：2012-05-16

申请人： Jens-Ulrik Becker ,  Jian Bian ,  Thomas Heller ,  Rudolf Schoenenberg ,  Richard G. Thiessen ,  Sabine Zeizinger ,  Thomas Rieger ,  Oliver Bulters

发明人： Jens-Ulrik Becker ,  Jian Bian ,  Thomas Heller ,  Rudolf Schoenenberg ,  Richard G. Thiessen ,  Sabine Zeizinger ,  Thomas Rieger ,  Oliver Bulters

IPC分类号： C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/18 ,  C21D9/00 ,  C21D1/18 ,  C21D1/22 ,  C23C2/02 ,  C21D1/19 ,  C21D1/78 ,  C21D8/02 ,  C21D8/04 ,  C22C38/00 ,  C22C38/14 ,  C22C38/12 ,  C21D6/00 ,  C22C38/28 ,  C22C38/32 ,  C22C38/34 ,  C22C38/38

CPC分类号： C23C2/02 ,  C21D1/18 ,  C21D1/19 ,  C21D1/78 ,  C21D6/002 ,  C21D8/0247 ,  C21D8/0447 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/18 ,  C22C38/28 ,  C22C38/32 ,  C22C38/34 ,  C22C38/38 ,  Y10T428/12799

摘要： A flat steel product having a tensile strength of at least 1200 MPa and consists of steel containing (wt %) C: 0.10-0.50%, Si: 0.1-2.5%, Mn: 1.0-3.5%, Al: up to 2.5%, P: up to 0.020%, S: up to 0.003%, N: up to 0.02%, and optionally one or more of the elements “Cr, Mo, V, Ti, Nb, B and Ca” in the quantities: Cr: 0.1-0.5%, Mo: 0.1-0.3%, V: 0.01-0.1%, Ti: 0.001-0.15%, Nb: 0.02-0.05%, wherein Σ(V, Ti, Nb)≦0.2% for the sum of the quantities of V, Ti and Nb, B: 0.0005-0.005%, and Ca: up to 0.01% in addition to Fe and unavoidable impurities. The flat steel product has a microstructure with (in surface percent) less than 5% ferrite, less than 10% bainite, 5-70% untempered martensite, 5-30% residual austenite, and 25-80% tempered martensite, at least 99% of the iron carbide contained in the tempered martensite having a size of less than 500 nm.

公开(公告)号：US20140322559A1

公开(公告)日：2014-10-30

申请号：US14117711

申请日：2012-05-16

申请人： Jens-Ulrik Becker ,  Jian Bian ,  Thomas Heller ,  Rudolf Schoenenberg ,  Richard G. Thiessen ,  Sabine Zeizinger ,  Thomas Rieger ,  Oliver Bulters

发明人： Jens-Ulrik Becker ,  Jian Bian ,  Thomas Heller ,  Rudolf Schoenenberg ,  Richard G. Thiessen ,  Sabine Zeizinger ,  Thomas Rieger ,  Oliver Bulters

IPC分类号： C23C2/02 ,  C21D1/18 ,  C22C38/38 ,  C22C38/34 ,  C22C38/32 ,  C22C38/00 ,  C22C38/14 ,  C22C38/12 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C21D6/00 ,  C22C38/28

CPC分类号： C23C2/02 ,  C21D1/18 ,  C21D1/19 ,  C21D1/78 ,  C21D6/002 ,  C21D8/0247 ,  C21D8/0447 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/18 ,  C22C38/28 ,  C22C38/32 ,  C22C38/34 ,  C22C38/38 ,  Y10T428/12799

摘要： A flat steel product having a tensile strength of at least 1200 MPa and consists of steel containing (wt %) C: 0.10-0.50%, Si: 0.1-2.5%, Mn: 1.0-3.5%, Al: up to 2.5%, P: up to 0.020%, S: up to 0.003%, N: up to 0.02%, and optionally one or more of the elements “Cr, Mo, V, Ti, Nb, B and Ca” in the quantities: Cr: 0.1-0.5%, Mo: 0.1-0.3%, V: 0.01-0.1%, Ti: 0.001-0.15%, Nb: 0.02-0.05%, wherein Σ(V, Ti, Nb)≦0.2% for the sum of the quantities of V, Ti and Nb, B: 0.0005-0.005%, and Ca: up to 0.01% in addition to Fe and unavoidable impurities. The flat steel product has a microstructure with (in surface percent) less than 5% ferrite, less than 10% bainite, 5-70% untempered martensite, 5-30% residual austenite, and 25-80% tempered martensite, at least 99% of the iron carbide contained in the tempered martensite having a size of less than 500 nm.

摘要翻译： 含有（wt％）C：0.10-0.50％，Si：0.1〜2.5％，Mn：1.0〜3.5％，Al：2.5％以下的钢的钢材，其拉伸强度为1200MPa以下， P：高达0.020％，S：高达0.003％，N：高达0.02％，以及可选的一种或多种元素“Cr，Mo，V，Ti，Nb，B和Ca” 0.1-0.5％，Mo：0.1-0.3％，V：0.01-0.1％，Ti：0.001-0.15％，Nb：0.02-0.05％，其中＆Sgr;（V，Ti，Nb）＆nlE; 0.2％ 除了Fe和不可避免的杂质之外，V，Ti和Nb的量，B：0.0005-0.005％，Ca：至多0.01％。 扁钢产品具有小于5％铁素体，小于10％贝氏体，5-70％未回火马氏体，5-30％残余奥氏体和25-80％回火马氏体的微结构，至少99 包含在具有小于500nm的尺寸的回火马氏体中的碳化铁的％。