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1. 发明公开

EP3164520A2 METHOD FOR PRODUCING A HIGH STRENGTH STEEL SHEET HAVING IMPROVED STRENGTH, DUCTILITY AND FORMABILITY 有权
标题翻译：用于生产具有改进的强度，延展性和可变形的高强度钢板
公开(公告)号：EP3164520A2
公开(公告)日：2017-05-10
申请号：EP15750813.6
申请日：2015-07-03
申请人： Arcelormittal
发明人： MOHANTY, Rashmi Ranjan , JUN, Hyun Jo , FAN, Dongwei
IPC分类号： C21D8/02 , C21D9/46 , C21D9/48 , C21D1/18 , C22C38/02 , C22C38/38
摘要： A method for producing a high strength steel sheet having a yield strength YS of at least 850 MPa, a tensile strength TS of at least 1180 MPa, a total elongation of at least 14% and a hole expansion ratio HER of at least 30%. The chemical composition of the steel contains: 0.15%≦C≦0.25%, 1.2%≦Si≦1.8%, 2%≦Mn≦2.4%, 0.1%≦Cr≦0.25%, Nb≦0.05%, Ti≦0.05%, Al≦0.50%, the remainder being Fe and unavoidable impurities. The sheet is annealed at an annealing temperature TA higher than Ac3 but less than 1000° C. for more than 30 s, by cooling it to a quenching temperature QT between 275° C. and 325° C., at a cooling speed sufficient to have, just after quenching, a structure consisting of austenite and at least 50% of martensite, the austenite content en.) being such that the final structure can contain between 3% and 15% of residual austenite and between 85 and 97% of the sum of martensite and bainite, without ferrite, heated to a partitioning temperature PT between 420° C. and 470° C. and maintained at this temperature for time between 50 s and 150 s and cooled to the room temperature.
摘要翻译：一种生产具有至少为850MPa的屈服强度YS的高强度钢板的制造方法，在至少1180的拉伸强度TS MPa时，至少14％的总延伸率和至少30％的扩孔率HER。钢的化学组成中含有：0.15％≦Ç≦0.25％，1.2％≦的Si≦1.8％，2％≦的Mn≦2.4％，0.1％≦的Cr≦0.25％以下，Nb≦0.05％以下，Ti≦0.05％，人≦00：50％，其余为Fe和不可避免的杂质。片材在被退火在退火温度TA高于Ac3但小于1000℃超过30秒时，通过将其冷却至275℃和325℃之间的淬火温度QT，在冷却速度足够的至已，只是淬火，一个结构奥氏体由...组成和马氏体的至少50％后，奥氏体含量峰）被检查并最终结构可以在3％和残留奥氏体的15％之间和85之间97的％含有马氏体和贝氏体的总和，不包含铁，加热至420℃和470℃之间的温度划分PT，并保持在该温度下50秒和150秒之间的时间，并冷却至室温。

2. 发明公开

EP4114994A1 HIGH STRENGTH COLD ROLLED AND GALVANNEALED STEEL SHEET AND MANUFACTURING PROCESS THEREOF 有权
公开(公告)号：EP4114994A1
公开(公告)日：2023-01-11
申请号：EP21703775.3
申请日：2021-02-08
申请人： ArcelorMittal
发明人： INACIO DA ROSA, Gregory , ZHAO, Lijia , FAN, Dongwei , DRILLET, Josée
IPC分类号： C21D8/02 , C21D9/46 , C22C38/02 , C22C38/22 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/38

3. 发明公开

EP4176092A1 HEAT TREATED COLD ROLLED STEEL SHEET AND A METHOD OF MANUFACTURING THEREOF 审中-实审
公开(公告)号：EP4176092A1
公开(公告)日：2023-05-10
申请号：EP21736390.2
申请日：2021-07-01
申请人： ArcelorMittal
发明人： FAN, Dongwei , GIRINA, Olga
IPC分类号： C21D8/02 , C22C38/00 , C22C38/02 , C22C38/06 , C22C38/22 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/38 , C21D6/02 , C21D1/20 , C23C2/06 , C23C2/02

4. 发明公开

EP3976841A1 COLD ROLLED AND COATED STEEL SHEET AND A METHOD OF MANUFACTURING THEREOF 审中-实审
公开(公告)号：EP3976841A1
公开(公告)日：2022-04-06
申请号：EP20725951.6
申请日：2020-05-12
申请人： ArcelorMittal
发明人： JUN, Hyun Jo , POTTORE, Narayan , FAN, Dongwei , CHEN, Xiang (Frank) , YAKUBOVSKY, Oleg
IPC分类号： C21D8/00 , C21D8/02 , C21D8/04 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C23C2/00

5. 发明公开

EP3831965A1 METHOD FOR PRODUCING A HIGH STRENGTH COATED STEEL SHEET HAVING IMPROVED STRENGTH, DUCTILITY AND FORMABILITY 审中-实审
公开(公告)号：EP3831965A1
公开(公告)日：2021-06-09
申请号：EP21150965.8
申请日：2015-07-03
申请人： ArcelorMittal
发明人： MOHANTY, Rashmi Ranjan , JUN, Hyun Jo , FAN, Dongwei
IPC分类号： C21D1/19 , C21D1/26 , C21D8/04 , C21D9/48 , C22C38/38 , C22C38/02 , C22C38/04 , C22C38/06 , C23C2/02 , C23C2/06 , C23C2/40 , B32B15/01
摘要： A method for producing a high strength coated steel sheet having a yield stress YS > 800 MPa, a tensile strength TS > 1180 MPa, and improved formability and ductility. The steel contains: 15% ≤ C ≤ 0.25%, 1.2% ≤ Si ≤ 1.8%, 2% ≤ Mn ≤ 2.4%, 0.1% ≤ Cr ≤ 0.25%, Al ≤ 0.5%, the remainder being Fe and unavoidable impurities. The sheet is annealed at a temperature higher than Ac3 and lower than 1000°C for a time of more than 30 s, then quenched by cooling it to a quenching temperature QT between 250°C and 350°C, to obtain a structure consisting of at least 60 % of martensite and a sufficient austenite content such that the final structure contains 3 % to 15% of residual austenite and 85 % to 97% of martensite and bainite without ferrite, then heated to a partitioning temperature PT between 430°C and 480°C and maintained at this temperature for a partitioning time Pt between 10 s and 90 s, then hot dip coated and cooled to the room temperature. Obtained coated sheet.

6. 发明授权

EP3164518B1 METHOD FOR PRODUCING A HIGH STRENGTH STEEL SHEET HAVING IMPROVED STRENGTH AND FORMABILITY AND OBTAINED SHEET 有权
公开(公告)号：EP3164518B1
公开(公告)日：2020-04-08
申请号：EP15750810.2
申请日：2015-07-03
申请人： Arcelormittal
发明人： MOHANTY, Rashmi Ranjan , JUN, Hyun Jo , FAN, Dongwei , VENKATASURYA, Pavan K. C.
IPC分类号： C21D1/19 , C21D9/48 , C21D8/04 , C21D6/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14

7. 发明授权

EP3152336B1 COLD ROLLED AND HOT DIP COATED STEEL SHEET, PRODUCTION METHOD AND USE 有权
公开(公告)号：EP3152336B1
公开(公告)日：2019-02-20
申请号：EP15734438.3
申请日：2015-06-03
申请人： Arcelormittal
发明人： FAN, Dongwei , JUN, Hyun Jo , ROTOLE, John A.
IPC分类号： C23C2/02 , C23C2/06 , C23C2/12 , C23C2/28 , C23C2/40 , C21D8/02 , C21D9/46 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/38 , B32B15/01

8. 发明公开

EP3164522A2 METHOD FOR PRODUCING A HIGH STRENGTH COATED STEEL SHEET HAVING IMPROVED STRENGTH, DUCTILITY AND FORMABILITY 有权
标题翻译：工艺用于生产具有提高强度，可扩展性和可变形涂布于高强度钢板
公开(公告)号：EP3164522A2
公开(公告)日：2017-05-10
申请号：EP15750811.0
申请日：2015-07-03
申请人： Arcelormittal
发明人： MOHANTY, Rashmi Ranjan , JUN, Hyun Jo , FAN, Dongwei
IPC分类号： C21D9/46 , C21D9/48 , C21D1/18 , C22C38/38 , C21D8/02 , C22C38/02 , C23C2/00
CPC分类号： C21D9/46 , B32B15/013 , C21D1/18 , C21D8/0226 , C21D8/0236 , C21D8/0247 , C21D2211/001 , C21D2211/008 , C22C38/02 , C22C38/06 , C22C38/34 , C22C38/38 , C22C38/58 , C23C2/02 , C23C2/06 , C23C2/40
摘要： A method for producing a high strength coated steel sheet having a yield stress YS > 800 MPa, a tensile strength TS > 1180 MPa, and improved formability and ductility. The steel contains: 15% ≤ C ≤ 0.25%, 1.2% ≤ Si ≤ 1.8%, 2% ≤ Mn ≤ 2.4%, 0.1% ≤ Cr ≤ 0.25%, Al ≤ 0.5%, the remainder being Fe and unavoidable impurities. The sheet is annealed at a temperature higher than Ac3 and lower than 1000°C for a time of more than 30 s, then quenched by cooling it to a quenching temperature QT between 250°C and 350°C, to obtain a structure consisting of at least 60 % of martensite and a sufficient austenite content such that the final structure contains 3 % to 15% of residual austenite and 85 % to 97% of martensite and bainite without ferrite, then heated to a partitioning temperature PT between 430°C and 480°C and maintained at this temperature for a partitioning time Pt between 10 s and 90 s, then hot dip coated and cooled to the room temperature. Obtained coated sheet.
摘要翻译：一种用于生产具有屈服应力YS> 800兆帕，拉伸强度TS> 1180兆帕，和改进的可成形性和延展性的高强度的镀敷钢板的方法。钢中含有：15％≦Ç≦0.25％，1.2％的Si≦1.8≦％，2％的Mn≦2.4≦％，0.1％的Cr 23 0.25≦％以下，Al≦0.5％，余量由Fe和不可避免的杂质。片材在用于超过30秒的时间高于Ac3和低于1000℃的温度下进行退火，然后通过将其冷却至250℃和350℃之间的淬火温度QT，得到骤冷结构，其中包括的马氏体的至少60％和足够的奥氏体contentsSuchergebnis所做的最终结构含有残留奥氏体的3％至15％，马氏体和贝氏体铁素体不为85％至97％，然后加热至430之间的分配温度PT ℃和480℃，并保持在该温度下一段时间的10秒和90秒之间分隔的Pt，然后热浸镀，并冷却至室温。

9. 发明授权

EP3164520B1 METHOD FOR PRODUCING A HIGH STRENGTH STEEL SHEET HAVING IMPROVED STRENGTH, DUCTILITY AND FORMABILITY 有权
公开(公告)号：EP3164520B1
公开(公告)日：2020-03-11
申请号：EP15750813.6
申请日：2015-07-03
申请人： Arcelormittal
发明人： MOHANTY, Rashmi Ranjan , JUN, Hyun Jo , FAN, Dongwei
IPC分类号： C21D1/19 , C21D1/25 , C21D8/02 , C21D9/46 , C21D9/48 , C21D6/00 , C21D8/04 , C22C38/02 , C22C38/06 , C22C38/26 , C22C38/28 , C22C38/34 , C22C38/38

10. 发明授权

EP3164512B1 METHOD FOR PRODUCING A HIGH STRENGTH COATED STEEL SHEET HAVING IMPROVED STRENGTH AND DUCTILITY AND OBTAINED SHEET 有权
公开(公告)号：EP3164512B1
公开(公告)日：2018-09-12
申请号：EP15750461.4
申请日：2015-07-03
申请人： Arcelormittal
发明人： FAN, Dongwei , JUN, Hyun Jo , MOHANTY, Rashmi Ranjan
IPC分类号： C21D1/19 , C21D8/02 , C21D9/46 , C21D1/18
CPC分类号： C21D9/46 , B32B15/013 , C21D1/19 , C21D6/005 , C21D6/008 , C21D8/0247 , C21D8/0447 , C21D8/0484 , C21D2211/001 , C21D2211/002 , C21D2211/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14 , C23C2/02 , C23C2/06 , C23C2/28 , C23C2/40
摘要： A method for producing a high strength coated steel sheet having a yield strength YS of at least 800 MPa, a tensile strength TS of >1180 MPa, a total elongation >14% and a hole expansion ratio HER>30%. The steel contains in weight %: 0.13%≦C≦0.22%, 1.2%≦Si≦1.8%, 1.8%≦Mn≦2.2%, 0.10%≦Mo≦0.20%, Nb≦0.05%, Al≦0.5%, the remainder being Fe and unavoidable impurities. The sheet is annealed at a temperature TA higher than Ac3 but less than 1000° C. for more than 30 s, then quenched by cooling temperature QT between 325° C. and 375° C., at a cooling speed sufficient to obtain a structure consisting of austenite and at least 60% of martensite, the austenite content being such that the fmal structure can contain between 3% and 15% of residual austenite and between 85 and 97% of the sum of martensite and bainite, without ferrite, then heated to a partitioning temperature PT between 430° C. and 480° C. and maintained at this temperature for a partitioning time Pt between 10 s and 90 s, then hot dip coated cooled to the room temperature. Coated sheet obtained.

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