RU2012146130A - HIGH-STRENGTH COLD-ROLLED STEEL SHEET AND METHOD FOR ITS MANUFACTURE - Google Patents
HIGH-STRENGTH COLD-ROLLED STEEL SHEET AND METHOD FOR ITS MANUFACTURE Download PDFInfo
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Abstract
1. Высокопрочный холоднокатаный стальной лист, содержащий в качестве компонентов состава, следующий состав, в % масс.:0,06-0,12% С, 0,4-0,8% Si, 1,6-2,0% Mn, 0,01-1,0% Cr, 0,001-0,1% V, 0,05% или менее Р, 0,01% или менее S, 0,01-0,5% растворимого алюминия (sol. Al) и 0,005% или менее N, остальное - железо и неизбежные примеси, при этомв структуре металла объемная доля полигонального феррита составляет 50% или более; объемная доля мартенсита составляет 5-15%, объемная доля фазы остаточного аустенита составляет 1-5%; средний размер зерна фазы остаточного аустенита составляет 10 мкм или менее; и отношение сторон фазы остаточного аустенита составляет 5 или менее; и остаточная структура состоит из бейнита или перлита, или из того и другого.2. Высокопрочный холоднокатаный стальной лист по п.1, дополнительно содержащий компонент состава, содержащий, по меньшей мере, один из 0,001-0,1% Ti, 0,001-0,1% Nb и 0,001-0,1% Zr, в % масс.3. Высокопрочный холоднокатаный стальной лист по п.1, дополнительно содержащий компонент состава, содержащий 0,01-0,5% Мо или 0,0001-0,0020% В, или оба, в % масс.4. Высокопрочный холоднокатаный стальной лист по п.2, дополнительно содержащий компонент состава, содержащий 0,01-0,5% Мо или 0,0001-0,0020% В, или оба, в % масс.5. Способ изготовления высокопрочного холоднокатаного стального листа, включающий:обеспечение горячекатаного и холоднокатаного исходного стального материала, имеющего состав компонентов по одному из пп.1-4;нагрев стального проката до первой температуры 750-870°С;выдерживание нагретой стали при первой температуре в течение 10 с или более;охлаждение выдержанной стали до температуры 600-700°С со средней скоростью охлаждения 20°С/с или менее;охлаждение охлажденной стали до второй температур1. High-strength cold-rolled steel sheet containing, as components of the composition, the following composition, in wt.%: 0.06-0.12% C, 0.4-0.8% Si, 1.6-2.0% Mn , 0.01-1.0% Cr, 0.001-0.1% V, 0.05% or less P, 0.01% or less S, 0.01-0.5% soluble aluminum (sol. Al) and 0.005% or less N, the rest is iron and inevitable impurities, while in the metal structure the volume fraction of polygonal ferrite is 50% or more; the volume fraction of martensite is 5-15%, the volume fraction of the phase of residual austenite is 1-5%; the average grain size of the residual austenite phase is 10 μm or less; and the aspect ratio of the residual austenite phase is 5 or less; and the residual structure consists of bainite or perlite, or both. 2. The high-strength cold-rolled steel sheet according to claim 1, further comprising a composition component comprising at least one of 0.001-0.1% Ti, 0.001-0.1% Nb and 0.001-0.1% Zr, in% by weight. 3. The high-strength cold-rolled steel sheet according to claim 1, further comprising a composition component containing 0.01-0.5% Mo or 0.0001-0.0020% B, or both, in mass%. The high-strength cold-rolled steel sheet according to claim 2, further comprising a component of the composition containing 0.01-0.5% Mo or 0.0001-0.0020% B, or both, in mass%. A method of manufacturing a high-strength cold-rolled steel sheet, including: providing hot-rolled and cold-rolled starting steel material having a composition of components according to one of claims 1 to 4; heating the rolled steel to a first temperature of 750-870 ° C; keeping heated steel at a first temperature for 10 s or more; cooling aged steel to a temperature of 600-700 ° C with an average cooling rate of 20 ° C / s or less; cooling cooled steel to a second temperature
Claims (5)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012162078A JP2014019928A (en) | 2012-07-20 | 2012-07-20 | High strength cold rolled steel sheet and method for producing high strength cold rolled steel sheet |
JP2012-162078 | 2012-07-20 |
Publications (2)
Publication Number | Publication Date |
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RU2012146130A true RU2012146130A (en) | 2014-05-10 |
RU2518852C1 RU2518852C1 (en) | 2014-06-10 |
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Application Number | Title | Priority Date | Filing Date |
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RU2012146130/02A RU2518852C1 (en) | 2012-07-20 | 2012-10-29 | High-strength cold-rolled sheet steel and method of its production |
Country Status (5)
Country | Link |
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JP (1) | JP2014019928A (en) |
BR (1) | BR102012027286A2 (en) |
MY (1) | MY183438A (en) |
RU (1) | RU2518852C1 (en) |
ZA (1) | ZA201207927B (en) |
Families Citing this family (15)
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---|---|---|---|---|
EP2924141B1 (en) * | 2014-03-25 | 2017-11-15 | ThyssenKrupp Steel Europe AG | Cold rolled steel flat product and method for its production |
WO2016001702A1 (en) | 2014-07-03 | 2016-01-07 | Arcelormittal | Method for producing a high strength coated steel sheet having improved strength, ductility and formability |
WO2016001700A1 (en) | 2014-07-03 | 2016-01-07 | Arcelormittal | Method for producing a high strength steel sheet having improved strength, ductility and formability |
WO2016001703A1 (en) | 2014-07-03 | 2016-01-07 | Arcelormittal | Method for manufacturing a high strength steel sheet and sheet obtained by the method |
WO2016001706A1 (en) * | 2014-07-03 | 2016-01-07 | Arcelormittal | Method for producing a high strength steel sheet having improved strength and formability and obtained sheet |
HUE044411T2 (en) | 2014-07-03 | 2019-10-28 | Arcelormittal | Method for producing an ultra high strength coated or not coated steel sheet and obtained sheet |
WO2016001708A1 (en) * | 2014-07-03 | 2016-01-07 | Arcelormittal | Method for producing a high strength coated steel sheet having improved strength, formability and obtained sheet |
WO2016001710A1 (en) | 2014-07-03 | 2016-01-07 | Arcelormittal | Method for producing a high strength coated steel having improved strength and ductility and obtained sheet |
KR102482257B1 (en) * | 2014-09-24 | 2022-12-27 | 더 나노스틸 컴퍼니, 인코포레이티드 | High ductility steel alloy with mixed microconstituent structure |
CN107406940B (en) * | 2015-03-06 | 2019-05-07 | 杰富意钢铁株式会社 | High-strength electric resistance welded steel pipe and its manufacturing method |
JP2016194136A (en) * | 2015-03-31 | 2016-11-17 | 株式会社神戸製鋼所 | High strength high ductility steel sheet excellent in production stability, manufacturing method thereof and cold rolled original sheet used for manufacturing high strength high ductility steel sheet |
WO2017109539A1 (en) | 2015-12-21 | 2017-06-29 | Arcelormittal | Method for producing a high strength steel sheet having improved strength and formability, and obtained high strength steel sheet |
BR112018013051B1 (en) | 2015-12-29 | 2021-01-26 | Arcelormittal | method for producing an annealed steel sheet after galvanizing and an annealed steel sheet after galvanizing |
KR102153197B1 (en) * | 2018-12-18 | 2020-09-08 | 주식회사 포스코 | Cold rolled steel sheet with excellent formability, galvanized steel sheet, and manufacturing method thereof |
CN113366126B (en) | 2019-01-29 | 2023-09-22 | 杰富意钢铁株式会社 | High-strength steel sheet and method for producing same |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
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TW550296B (en) * | 2000-02-29 | 2003-09-01 | Kawasaki Steel Co | High tensile cold-rolled steel sheet having excellent strain aging hardening properties and manufacturing method thereof |
KR20020019124A (en) * | 2000-05-26 | 2002-03-09 | 에모또 간지 | Cold rolled steel sheet and galvanized steel sheet having strain aging hardening property and method for producing the same |
US7687152B2 (en) * | 2003-04-10 | 2010-03-30 | Nippon Steel Corporation | High strength molten zinc plated steel sheet and process of production of same |
EP1990431A1 (en) * | 2007-05-11 | 2008-11-12 | ArcelorMittal France | Method of manufacturing annealed, very high-resistance, cold-laminated steel sheets, and sheets produced thereby |
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2012
- 2012-07-20 JP JP2012162078A patent/JP2014019928A/en active Pending
- 2012-10-22 ZA ZA2012/07927A patent/ZA201207927B/en unknown
- 2012-10-23 MY MYPI2012004701A patent/MY183438A/en unknown
- 2012-10-24 BR BR102012027286A patent/BR102012027286A2/en not_active Application Discontinuation
- 2012-10-29 RU RU2012146130/02A patent/RU2518852C1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
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JP2014019928A (en) | 2014-02-03 |
ZA201207927B (en) | 2013-06-26 |
BR102012027286A2 (en) | 2014-10-29 |
MY183438A (en) | 2021-02-18 |
RU2518852C1 (en) | 2014-06-10 |
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Effective date: 20191030 |