EP1485511A2 - Tole d'acier lamine a chaud a tres haute resistance et de faible desite, et procede de fabrication - Google Patents
Tole d'acier lamine a chaud a tres haute resistance et de faible desite, et procede de fabricationInfo
- Publication number
- EP1485511A2 EP1485511A2 EP03725278A EP03725278A EP1485511A2 EP 1485511 A2 EP1485511 A2 EP 1485511A2 EP 03725278 A EP03725278 A EP 03725278A EP 03725278 A EP03725278 A EP 03725278A EP 1485511 A2 EP1485511 A2 EP 1485511A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- phase
- silicon
- sheet according
- aluminum
- sheet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
Definitions
- the invention relates to a hot-rolled steel sheet, with very high strength and low density, from a strip rolling train, as well as its manufacturing process.
- Reducing motor vehicles becomes a necessity due to the imposition of reducing C02 emissions to 140g / Km in 2008. This reduction can only be achieved by increasing the level of mechanical strength of steels to compensate for the decrease in sheet thickness. It is therefore necessary to increase the mechanical characteristics while reducing the thicknesses of the sheets with which the parts used are made. This approach finds its limits with the reduction in the rigidity of the parts and the appearance of unacceptable vibrations and noises in targeted applications in the automotive field where noise is an element of discomfort.
- the object of the invention is to provide users of hot-rolled steel sheets with a sheet of low density and having resistance levels comparable to steel sheets with high mechanical resistance currently used or even of a higher level, and this, in order to combine the two advantages of low density and high mechanical strength.
- the first object of the invention is a hot-rolled steel sheet of very high strength and low density, characterized in that its composition in% by weight comprises: 0.04% ⁇ carbon ⁇ 0.5%
- the steel comprises in its composition, in% by weight:
- the sheet according to the invention is such that the silicon content is between 3 and 6%, and that the aluminum content is between 1 and 2%.
- the sheet according to the invention is such that the silicon content is between 2 and 3%, and that the aluminum content is between 7 and 10%.
- the silicon and aluminum contents of the sheet according to the invention are such that:
- the sheet according to the invention can also have the following characteristics, alone or in combination:
- the sheet has a microstructure consisting of a primary ferrite phase and a secondary ferrite phase, the average grain size of said primary ferrite being greater than the average grain size of said secondary ferrite, said microstructure also containing carburetted phases,
- the sheet has a primary ferrite phase obtained during the heating of the steel carried out prior to hot rolling, and a secondary ferrite phase obtained after hot rolling, as well as carburetted phases, - the sheet comprises a primary ferrite phase whose average grain size greater than 5 ⁇ m, and a secondary ferrite phase are the average grain size less than 2 ⁇ m.
- the second object of the invention is a method of manufacturing a hot-rolled sheet which comprises the steps consisting in:
- the temperature of end of hot rolling being higher than the temperature AR3 of the austenitic phase formed during reheating, in order to carry out a rolling under austenitic conditions, thus transforming the austenitic phase into a phase secondary ferrite and fuel phases.
- FIG. 1 a curve showing the evolution of the density of a steel as a function of the silicon, aluminum and / or silicon plus aluminum content
- FIG. 2 the microstructure of a steel according to the invention comprising 0.04% of carbon (casting I)
- FIG. 3 the microstructure of a steel according to the invention comprising 0.160% of carbon (casting J)
- FIG. 4 the microstructure of a steel according to the invention comprising 0.268% of carbon (casting K)
- FIG. 5 the microstructure of a steel comprising 0.505% of carbon, shown for comparison (casting L ).
- the hot rolled steel on a strip train according to the invention has a high mechanical strength and a low density.
- molybdenum ⁇ 2% taken alone or in combination, the rest being iron and elements inherent in the preparation, comprises:
- the carbon content of the sheet according to the invention is between 0.04 and 0.5% by weight, preferably between 0.04 and 0.3% by weight.
- the evolution of the structure of the steel as a function of the carbon content is presented in FIGS. 2 to 5 and shows that the structure of the steel according to the invention (FIGS. 2 to 4) consists of primary ferrite with coarse grains, and a mixture of carburetted phase and fine secondary ferrite with smaller grains. If the carbon content falls below 0.04%, the microstructure does not include carburetted phases and loses in mechanical characteristics. On the other hand, if the carbon content exceeds 0.5% in weight, the structure becomes very fragile, and we observe that the microstructure no longer includes primary ferrite (see Figure 5).
- the steel according to the invention can reach levels of mechanical resistance ranging from 620 MPa to more than 1000 MPa and densities of the order of 7.55 and down to 7 g / cm3 depending on the contents.
- silicon and aluminum and additive elements as shown in Figure 1.
- the mechanical characteristics can be reinforced by the addition of micro alloy elements such as niobium, titanium, vanadium, the latter two, which are less dense than iron.
- the sheet according to the invention can be manufactured by any suitable process.
- This process first of all comprises reheating the slab at high temperature (preferably above 900 ° C.), prior to hot rolling.
- high temperature preferably above 900 ° C.
- the present inventors have discovered that during this reheating step, the slab has a microstructure composed of a so-called primary ferritic phase which forms at high temperature, and which co-exists with an austenitic phase.
- the austenitic phase is then completely transformed into a mixture of carburetted phase and secondary ferrite, the average grain size of which is smaller than that of the primary ferritic phase which remains.
- a carbon-manganese couple will advantageously be chosen in order to have an AR3 transformation temperature such that it is possible to guarantee rolling under austenitic conditions.
- Table 1 below presenting different analyzes according to the invention, shows the influence of the different elements on the characteristics of the steels.
- the flows A, C, F, H and L are given for comparison, while the flows B, D, E, G, I, J and K are according to the invention.
- the rolling temperature is 895 ° C, and the winding temperature of 600 ° C, with a cooling rate of 49 ° C / s, which gives the steel a mechanical resistance of 750 MPa.
- Lowering the winding temperature increases the level of mechanical resistance.
- the winding temperature of which is 20 ° C. with a cooling rate of 5 ° C./s, which makes it possible to reach a level of mechanical resistance of 902 MPa.
- the level of mechanical strength can also be adjusted by carbon and manganese contents and / or other addition elements as presented above.
- Certain operations such as, for example, re-rolling or a heat treatment such as annealing, can be used to modify or adjust the level of mechanical properties.
- the steel proposed meets two contradictory needs in the field of hot-rolled steels on the one hand, high mechanical properties and on the other hand, low density.
- the existing solutions for making steels with very high levels of mechanical strength are based on the use of addition elements which do not allow a large variation in density, and the existing solutions for making steels with low density are based on the use of addition elements which do not allow a high level of mechanical strength to be achieved.
- the steel of the invention combines these two properties, namely, a high level of mechanical resistance and a very low density for lightening of a part usable in the automobile.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Sheet Steel (AREA)
- Heat Treatment Of Steel (AREA)
- Laminated Bodies (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0202998 | 2002-03-11 | ||
FR0202998A FR2836930B1 (fr) | 2002-03-11 | 2002-03-11 | Acier lamine a chaud a tres haute resistance et de faible densite |
PCT/FR2003/000765 WO2003076673A2 (fr) | 2002-03-11 | 2003-03-10 | Tôle d'acier laminé à chaud à très haute résistance et de faible densité, et procédé de fabrication |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1485511A2 true EP1485511A2 (fr) | 2004-12-15 |
EP1485511B1 EP1485511B1 (fr) | 2005-12-07 |
Family
ID=27763686
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03725278A Expired - Lifetime EP1485511B1 (fr) | 2002-03-11 | 2003-03-10 | Tole d'acier laminee a chaud a tres haute resistance et de faible densite, et procede de fabrication |
Country Status (15)
Country | Link |
---|---|
US (1) | US7416615B2 (fr) |
EP (1) | EP1485511B1 (fr) |
JP (1) | JP4638152B2 (fr) |
KR (1) | KR100986697B1 (fr) |
CN (1) | CN1306046C (fr) |
AT (1) | ATE312206T1 (fr) |
AU (1) | AU2003227824A1 (fr) |
BR (1) | BR0308328B1 (fr) |
CA (1) | CA2478123C (fr) |
DE (1) | DE60302659T2 (fr) |
ES (1) | ES2252671T3 (fr) |
FR (1) | FR2836930B1 (fr) |
MX (1) | MXPA04008717A (fr) |
RU (1) | RU2323983C2 (fr) |
WO (1) | WO2003076673A2 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2543590C2 (ru) * | 2010-10-18 | 2015-03-10 | Ниппон Стил Энд Сумитомо Метал Корпорейшн | Горячекатаный, холоднокатаный и плакированный стальной лист, имеющий улучшенную равномерную и локальную пластичность при высокой скорости деформации |
Families Citing this family (20)
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JP5042694B2 (ja) * | 2007-04-13 | 2012-10-03 | 新日本製鐵株式会社 | 延性及び加工性に優れた高強度低比重鋼板及びその製造方法 |
EP1995336A1 (fr) * | 2007-05-16 | 2008-11-26 | ArcelorMittal France | Acier à faible densité présentant une bonne aptitude à l'emboutissage |
KR101008117B1 (ko) * | 2008-05-19 | 2011-01-13 | 주식회사 포스코 | 표면특성이 우수한 고가공용 고강도 박강판 및용융아연도금강판과 그 제조방법 |
KR101027250B1 (ko) * | 2008-05-20 | 2011-04-06 | 주식회사 포스코 | 고연성 및 내지연파괴 특성이 우수한 고강도 냉연강판,용융아연 도금강판 및 그 제조방법 |
KR100985298B1 (ko) * | 2008-05-27 | 2010-10-04 | 주식회사 포스코 | 리징 저항성이 우수한 저비중 고강도 열연 강판, 냉연강판, 아연도금 강판 및 이들의 제조방법 |
BR112013025015B1 (pt) | 2011-03-28 | 2018-11-06 | Nippon Steel & Sumitomo Metal Corporation | chapa de aço laminada a frio e método de produção da mesma |
PL2716782T3 (pl) | 2011-05-25 | 2019-04-30 | Nippon Steel & Sumitomo Metal Corp | Blacha stalowa cienka walcowana na zimno i sposób jej wytwarzania |
WO2013178887A1 (fr) * | 2012-05-31 | 2013-12-05 | Arcelormittal Investigación Desarrollo Sl | Acier laminé a chaud ou a froid a faible densite, son procede de mise en oeuvre et son utilisation |
DE102012013113A1 (de) * | 2012-06-22 | 2013-12-24 | Salzgitter Flachstahl Gmbh | Hochfester Mehrphasenstahl und Verfahren zur Herstellung eines Bandes aus diesem Stahl mit einer Mindestzugfestigkleit von 580MPa |
CN103215516B (zh) | 2013-04-09 | 2015-08-26 | 宝山钢铁股份有限公司 | 一种700MPa级高强度热轧Q&P钢及其制造方法 |
CN105164298A (zh) * | 2013-05-01 | 2015-12-16 | 新日铁住金株式会社 | 镀锌钢板及其制造方法 |
PL2993245T3 (pl) | 2013-05-01 | 2018-12-31 | Nippon Steel & Sumitomo Metal Corp | Blacha stalowa cienka o dużej wytrzymałości i niskim ciężarze właściwym mająca doskonałą spawalność punktową |
UA117592C2 (uk) * | 2013-08-01 | 2018-08-27 | Арселорміттал | Пофарбований оцинкований сталевий лист та спосіб його виготовлення |
JP6380660B2 (ja) | 2015-04-08 | 2018-08-29 | 新日鐵住金株式会社 | 熱処理鋼板部材およびその製造方法 |
ES2787005T3 (es) | 2015-04-08 | 2020-10-14 | Nippon Steel Corp | Miembro de lámina de acero tratado térmicamente, y método de producción para el mismo |
ES2782077T3 (es) * | 2015-04-08 | 2020-09-10 | Nippon Steel Corp | Lámina de acero para tratamiento térmico |
RU2615667C1 (ru) * | 2015-12-09 | 2017-04-06 | Публичное акционерное общество "Северсталь" | Способ производства горячекатаных листов из низколегированной стали класса прочности к65 для электросварных прямошовных труб |
RU2627079C1 (ru) * | 2016-11-17 | 2017-08-03 | Федеральное Государственное Унитарное Предприятие "Центральный научно-исследовательский институт черной металлургии им. И.П. Бардина" (ФГУП "ЦНИИчермет им. И.П. Бардина") | Способ производства высокопрочной коррозионностойкой горячекатаной стали с низким удельным весом |
CN112481555B (zh) * | 2020-11-27 | 2022-01-04 | 马鞍山市鑫龙特钢有限公司 | 一种耐高温氧化腐蚀的低密度钢 |
WO2023105271A1 (fr) * | 2021-12-10 | 2023-06-15 | Arcelormittal | Acier laminé à chaud de faible densité, son procédé de production et utilisation de cet acier pour produire des pièces de véhicule |
Family Cites Families (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60204833A (ja) * | 1984-03-29 | 1985-10-16 | Sumitomo Metal Ind Ltd | 磁気特性の優れたセンダスト板材の製造方法 |
JPH07115041B2 (ja) * | 1987-03-11 | 1995-12-13 | 日本鋼管株式会社 | 無方向性高Si鋼板の製造方法 |
JPH03291360A (ja) * | 1990-04-06 | 1991-12-20 | Tohoku Tokushuko Kk | 磁気ヘッド用合金 |
JP2536255B2 (ja) * | 1990-08-04 | 1996-09-18 | 日本鋼管株式会社 | 制振合金 |
JP2536256B2 (ja) * | 1990-08-04 | 1996-09-18 | 日本鋼管株式会社 | 高強度制振合金 |
JP2503125B2 (ja) * | 1991-05-09 | 1996-06-05 | 新日本製鐵株式会社 | 良電磁厚板の製造方法 |
JP2708682B2 (ja) * | 1991-12-27 | 1998-02-04 | 新日本製鐵株式会社 | 磁気特性が極めて優れた無方向性電磁鋼板及びその製造方法 |
JP3168665B2 (ja) * | 1992-01-18 | 2001-05-21 | 住友金属工業株式会社 | 加工性に優れた熱延高張力鋼板とその製造法 |
JP3011538B2 (ja) * | 1992-05-25 | 2000-02-21 | 新日本製鐵株式会社 | 降伏強さが低い構造用鋼の製造法 |
US5445685A (en) * | 1993-05-17 | 1995-08-29 | The Regents Of The University Of California | Transformation process for production of ultrahigh carbon steels and new alloys |
JP3386514B2 (ja) * | 1993-06-16 | 2003-03-17 | 川崎製鉄株式会社 | 制振合金薄鋼板及びその製造方法 |
EP0681032A4 (fr) * | 1993-11-22 | 1996-03-20 | Nippon Steel Corp | Brame d'acier a tres bas carbone, produite par coulee continue, et tole d'acier a tres bas carbone presentant peu de defauts de surface au cours de sa fabrication, et procede de fabrication de cette brame et de cette tole. |
JPH07252592A (ja) * | 1994-03-15 | 1995-10-03 | Nippon Steel Corp | 成形性、低温靭性及び疲労特性に優れた熱延高強度鋼板 |
JPH07300655A (ja) * | 1994-04-28 | 1995-11-14 | Nippon Steel Corp | 磁気特性、及びカシメ性が優れている無方向性電磁鋼板及びその製造方法 |
JP3348365B2 (ja) * | 1994-08-19 | 2002-11-20 | 新日本製鐵株式会社 | 疲労特性に優れた耐熱軟化性を有する加工用熱延高強度鋼板およびその製造方法 |
JPH09241745A (ja) * | 1996-03-01 | 1997-09-16 | Nkk Corp | 一様伸びおよび高温リラクセーション特性に優れたpc鋼棒の製造方法 |
JPH1025543A (ja) * | 1996-07-15 | 1998-01-27 | Nkk Corp | スポット溶接ままで一様伸び及び高温リラクセーション特性に優れたpc鋼棒 |
JPH10212522A (ja) * | 1997-01-30 | 1998-08-11 | Nippon Steel Corp | 酸洗性に優れた熱延鋼板の製造方法 |
CA2311764A1 (fr) | 1997-10-28 | 1999-05-06 | Hide And Seek Technologies, Inc. | Authentification de disque optique et memorisation d'informations |
JPH11189850A (ja) * | 1997-12-24 | 1999-07-13 | Sumitomo Metal Ind Ltd | 無方向性電磁鋼板およびその製造方法 |
JP3401427B2 (ja) * | 1998-03-12 | 2003-04-28 | 株式会社神戸製鋼所 | 耐衝撃性に優れた高強度鋼板 |
JPH11323489A (ja) * | 1998-05-13 | 1999-11-26 | Nippon Steel Corp | 形状凍結性に優れた良加工性高強度冷延鋼板およびその製造方法 |
JP4184481B2 (ja) * | 1998-06-11 | 2008-11-19 | 新日本製鐵株式会社 | 耐食鋼 |
JP2000160249A (ja) * | 1998-11-26 | 2000-06-13 | Kawasaki Steel Corp | L方向及びc方向の磁気特性に優れた電磁鋼熱延板の製造方法 |
JP3962186B2 (ja) * | 1998-12-11 | 2007-08-22 | 新日本製鐵株式会社 | 熱処理硬化能に優れた薄鋼板及びその鋼板を用いた高強度プレス成形体の製造方法 |
JP3447233B2 (ja) * | 1998-12-11 | 2003-09-16 | 新日本製鐵株式会社 | 熱処理硬化能に優れた薄鋼板及び高強度プレス成形体の製造方法 |
FR2796966B1 (fr) * | 1999-07-30 | 2001-09-21 | Ugine Sa | Procede de fabrication de bandes minces en acier de type "trip" et bandes minces ainsi obtenues |
JP3924108B2 (ja) * | 2000-03-13 | 2007-06-06 | 新日本製鐵株式会社 | 予加工後のハイドロフォーム成形性の優れた高強度鋼板の製造方法 |
-
2002
- 2002-03-11 FR FR0202998A patent/FR2836930B1/fr not_active Expired - Lifetime
-
2003
- 2003-03-10 JP JP2003574870A patent/JP4638152B2/ja not_active Expired - Lifetime
- 2003-03-10 US US10/507,641 patent/US7416615B2/en not_active Expired - Lifetime
- 2003-03-10 BR BRPI0308328-4A patent/BR0308328B1/pt active IP Right Grant
- 2003-03-10 KR KR1020047014303A patent/KR100986697B1/ko active IP Right Grant
- 2003-03-10 AT AT03725278T patent/ATE312206T1/de not_active IP Right Cessation
- 2003-03-10 RU RU2004129774/02A patent/RU2323983C2/ru active
- 2003-03-10 AU AU2003227824A patent/AU2003227824A1/en not_active Abandoned
- 2003-03-10 MX MXPA04008717A patent/MXPA04008717A/es active IP Right Grant
- 2003-03-10 EP EP03725278A patent/EP1485511B1/fr not_active Expired - Lifetime
- 2003-03-10 CN CNB038056259A patent/CN1306046C/zh not_active Expired - Lifetime
- 2003-03-10 WO PCT/FR2003/000765 patent/WO2003076673A2/fr active IP Right Grant
- 2003-03-10 CA CA2478123A patent/CA2478123C/fr not_active Expired - Lifetime
- 2003-03-10 ES ES03725278T patent/ES2252671T3/es not_active Expired - Lifetime
- 2003-03-10 DE DE60302659T patent/DE60302659T2/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO03076673A2 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2543590C2 (ru) * | 2010-10-18 | 2015-03-10 | Ниппон Стил Энд Сумитомо Метал Корпорейшн | Горячекатаный, холоднокатаный и плакированный стальной лист, имеющий улучшенную равномерную и локальную пластичность при высокой скорости деформации |
Also Published As
Publication number | Publication date |
---|---|
AU2003227824A1 (en) | 2003-09-22 |
US7416615B2 (en) | 2008-08-26 |
DE60302659D1 (de) | 2006-01-12 |
WO2003076673A2 (fr) | 2003-09-18 |
JP4638152B2 (ja) | 2011-02-23 |
CN1306046C (zh) | 2007-03-21 |
ES2252671T3 (es) | 2006-05-16 |
RU2004129774A (ru) | 2005-08-20 |
WO2003076673A3 (fr) | 2004-04-22 |
CA2478123A1 (fr) | 2003-09-18 |
KR100986697B1 (ko) | 2010-10-08 |
BR0308328B1 (pt) | 2011-11-01 |
KR20040088583A (ko) | 2004-10-16 |
DE60302659T2 (de) | 2006-07-20 |
FR2836930A1 (fr) | 2003-09-12 |
MXPA04008717A (es) | 2004-12-06 |
US20060231177A1 (en) | 2006-10-19 |
JP2005527701A (ja) | 2005-09-15 |
BR0308328A (pt) | 2004-12-28 |
CN1688725A (zh) | 2005-10-26 |
RU2323983C2 (ru) | 2008-05-10 |
FR2836930B1 (fr) | 2005-02-25 |
CA2478123C (fr) | 2011-01-25 |
WO2003076673A8 (fr) | 2004-09-30 |
ATE312206T1 (de) | 2005-12-15 |
AU2003227824A8 (en) | 2003-09-22 |
EP1485511B1 (fr) | 2005-12-07 |
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