WO1998040522A1 - Verfahren zur herstellung eines bandstahles mit hoher festigkeit und guter umformbarkeit - Google Patents
Verfahren zur herstellung eines bandstahles mit hoher festigkeit und guter umformbarkeit Download PDFInfo
- Publication number
- WO1998040522A1 WO1998040522A1 PCT/EP1998/001376 EP9801376W WO9840522A1 WO 1998040522 A1 WO1998040522 A1 WO 1998040522A1 EP 9801376 W EP9801376 W EP 9801376W WO 9840522 A1 WO9840522 A1 WO 9840522A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- steel
- strip
- hot
- hot strip
- strength
- Prior art date
Links
Classifications
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
-
- 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
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0226—Hot rolling
-
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/002—Bainite
-
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/008—Martensite
Definitions
- the invention relates to a method for producing a steel strip with a high strength of at least 900 MPa and good formability.
- the characteristic values relevant for the forming can be obtained from the tensile test with great meaning for practice.
- the elongation at break and the n-value are important measures.
- the n-value is characteristic of the deformability under a stretching stress. This is the predominant deformation mechanism in most sheet metal parts of a vehicle.
- the n-value is in relatively good agreement with the yield point ratio, which is also a measure of the strength of a material that can be used in practice.
- the highest possible values for the elongation at break (A) and the strengthening value (n value) are aimed for.
- the object of the invention is to develop strip steels which have a high strength, paired with good formability and high component strength.
- the cooling speed on the outfeed roller table is at least 30 ° C / s and the reel temperature is 300 to 600 ° C.
- the particular economic importance of the method according to the invention consists in the possibility of production as a hot strip in thicknesses below 2.0 mm, e.g. 1.5 mm.
- the manufacturing process thus does not necessarily require the complex manufacturing process of cold strip production with the additional steps of cold rolling and final annealing.
- This material concept also includes the option of surface finishing applied at the factory. For example, an electrolytically deposited zinc layer can be applied. The enormous improvement in corrosion protection through a zinc coating can be assumed as a known fact. It is also known that high-strength steels tend to become brittle due to hydrogen absorption during the electrolytic galvanizing process. It could be shown that the steel strip according to the invention remains free from these dreaded galvanizing problems. The meaning of the alloying elements and the manufacturing parameters are described below.
- Carbon is required for structural hardening and for the formation of fine precipitates.
- the content should be limited to 0.1 to 0.2%.
- Silicon increases the hardness of the mixed crystal, which requires at least 0.3%. For reasons of weldability and to avoid unfavorable scale formation, the content should be limited to 0.6%.
- Manganese at a content of at least 1.5% delays the conversion and causes the formation of hard conversion products. In order to avoid impermissibly strong micro segregations, the content should be max. Limit 2.0%.
- Phosphorus can be used to further increase solid-solution strengthening, but should not exceed 0.08% for reasons of weldability.
- Chromium promotes the formation of a bainite-rich final structure in at least 0.3%. In order not to delay the conversion too much, its content should be limited to max. Be limited to 0.80%.
- Titanium or zirconium can be used to form fine precipitates with a hardening effect.
- the effect clearly drops at levels above 0.2%.
- the maximum value is therefore set at 0.2%.
- Niobium can also be used for precipitation hardening. At least 0.04% should preferably be added. For reasons of effectiveness, the content is limited to max. 0.08% set.
- Boron improves hardenability at levels in the range of 0.0005 to 0.005%. According to the current state of knowledge, it is used for this purpose in martensitic steel. It has surprisingly been found that boron in the present case also causes a significant increase in strength in the bainitic basic structure with only a slight reduction in formability.
- the final roll temperature should be in the range of homogeneous austenite and therefore not below 800 ° C, on the one hand to ensure sufficiently low resistance to deformation and on the other hand to keep deformation-induced precipitations low.
- the cooling conditions should be selected so that a conversion to pearlite is avoided and the conversion takes place largely in the bainite stage. Shares of martensite can contribute to further solidification. In addition, solidification should be achieved by separating the finest particles. This requires a cooling of the final roll temperature with a cooling rate of at least 30 ° C / s. This cooling process must be ended at a temperature below 600 ° C by winding the strip on a reel and then cooling it in the coil.
- Table 1 shows the chemical compositions of the strip steels 1 and 2 and steel 3, a comparative martensitic steel, produced according to the invention.
- Table 2 shows the characteristic mechanical properties of the strip steels 1 and 2 produced according to the invention and of the comparative steel 3, which was tempered to the values given in Table 2 by a subsequent heat treatment.
- Table 3 shows the influence of low reel temperature and a subsequent heat treatment on the properties of a strip steel produced according to the invention of the composition of steel 1 in Table 1.
- Low reel temperatures of preferably 330 ° C can significantly increase the strength properties, see Example 4 in Table 3.
- Another object of the invention is to achieve the advantageous effect of a subsequent heat treatment. It has surprisingly been found that the forming properties can be further increased by the thermal treatment of the steel strip produced according to the invention in the temperature range between 500 and 850 ° C. Examples 4, 5 and 6 in Table 3 show the effect of such a heat treatment on the steel 1 with the composition according to Table 1. This achieves a material state which offers advantages for components which overall still have high strengths, especially yield strengths with good ones Formability, must have.
- This property profile is suitable for the production of cold-formed parts with a high energy absorption capacity (example 5a). By selecting higher annealing temperatures, high strengths can be achieved with extraordinarily low yield strength ratios or, in the same way, high hardening with good elongation values (Examples 5b, 6a to 6c).
- Example 7 in Table 3 shows that the strip steel 1 produced according to the invention after cold rolling with a 50% degree of deformation and subsequent annealing likewise achieves high strengths with an even further improved yield strength ratio compared to the only hot-rolled strip steels 1 and 2.
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)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL98335639A PL186831B1 (pl) | 1997-03-13 | 1998-03-10 | Sposób wytwarzania taśmy ze stali uspokojonej aluminium |
AT98916911T ATE206472T1 (de) | 1997-03-13 | 1998-03-10 | Verfahren zur herstellung eines bandstahles mit hoher festigkeit und guter umformbarkeit |
EP98916911A EP0966547B1 (de) | 1997-03-13 | 1998-03-10 | Verfahren zur herstellung eines bandstahles mit hoher festigkeit und guter umformbarkeit |
DE59801637T DE59801637D1 (de) | 1997-03-13 | 1998-03-10 | Verfahren zur herstellung eines bandstahles mit hoher festigkeit und guter umformbarkeit |
CA002284124A CA2284124A1 (en) | 1997-03-13 | 1998-03-10 | Method for producing a highly resistant, very ductile steel strip |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19710125A DE19710125A1 (de) | 1997-03-13 | 1997-03-13 | Verfahren zur Herstellung eines Bandstahles mit hoher Festigkeit und guter Umformbarkeit |
DE19710125.9 | 1997-03-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998040522A1 true WO1998040522A1 (de) | 1998-09-17 |
Family
ID=7823066
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1998/001376 WO1998040522A1 (de) | 1997-03-13 | 1998-03-10 | Verfahren zur herstellung eines bandstahles mit hoher festigkeit und guter umformbarkeit |
Country Status (11)
Country | Link |
---|---|
EP (1) | EP0966547B1 (de) |
CN (1) | CN1082549C (de) |
AR (1) | AR010130A1 (de) |
AT (1) | ATE206472T1 (de) |
CA (1) | CA2284124A1 (de) |
CZ (1) | CZ290944B6 (de) |
DE (2) | DE19710125A1 (de) |
ES (1) | ES2165157T3 (de) |
PL (1) | PL186831B1 (de) |
WO (1) | WO1998040522A1 (de) |
ZA (1) | ZA982115B (de) |
Cited By (7)
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DE10161465C1 (de) * | 2001-12-13 | 2003-02-13 | Thyssenkrupp Stahl Ag | Verfahren zum Herstellen von Warmband |
EP1288322A1 (de) * | 2001-08-29 | 2003-03-05 | Sidmar N.V. | Ultrahochfester Stahl, Produkt aus diesem Stahl und Verfahren zu seiner Herstellung |
FR2847271A1 (fr) * | 2002-11-19 | 2004-05-21 | Usinor | Procede pour fabriquer une tole en acier resistant a l'abrasion et tole obtenue |
JP2006506528A (ja) * | 2002-11-19 | 2006-02-23 | アンドユストウエル・クルゾ | 耐摩耗性鋼板を製造する方法および得られた板 |
EP1918402A1 (de) * | 2006-10-30 | 2008-05-07 | ThyssenKrupp Steel AG | Verfahren zum Herstellen von Stahl-Flachprodukten aus einem ein Komplexphasen-Gefüge bildenden Stahl |
EP1367143B1 (de) | 2001-02-27 | 2016-07-20 | JFE Steel Corporation | Feuerverzinktes stahlblech mit hoher festigkeit und herstellungsverfahren dafür |
US11225697B2 (en) | 2014-12-19 | 2022-01-18 | Nucor Corporation | Hot rolled light-gauge martensitic steel sheet and method for making the same |
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CA2272943C (en) | 1998-06-17 | 2008-08-12 | Black & Decker Inc. | Apparatus for charging batteries |
CA2310335C (en) * | 1998-09-29 | 2009-05-19 | Kawasaki Steel Corporation | High strength thin steel sheet, high strength galvannealed steel sheet and manufacturing method thereof |
DE29818244U1 (de) * | 1998-10-13 | 1998-12-24 | Benteler Werke Ag | Stahllegierung |
DE19937271C2 (de) | 1999-08-06 | 2003-01-09 | Hille & Mueller Gmbh & Co | Verfahren zur Herstellung von tiefzieh- oder abstreckziehfähigem, veredeltem Kaltband, sowie Kaltband, vorzugsweise zur Herstellung von zylindrischen Behältern und insbesondere Batteriebehältern |
EP2166122A1 (de) * | 1999-09-16 | 2010-03-24 | JFE Steel Corporation | Verfahren zur Herstellung von hochfestem Stahl |
FR2807068B1 (fr) * | 2000-03-29 | 2002-10-11 | Usinor | Acier lamine a chaud a tres haute limite d'elasticite et resistance mecanique utilisable notamment pour la realisation de piece de vehicules automobiles |
DE10130774C1 (de) * | 2001-06-26 | 2002-12-12 | Thyssenkrupp Stahl Ag | Verfahren zum Herstellen von hochfesten, aus einem Warmband kaltverformten Stahlprodukten mit guter Dehnbarkeit |
DE10153234A1 (de) * | 2001-10-31 | 2003-05-22 | Thyssenkrupp Stahl Ag | Für die Herstellung von nichtkornorientiertem Elektroblech bestimmtes, warmgewalztes Stahlband und Verfahren zu seiner Herstellung |
WO2004059021A1 (ja) † | 2002-12-24 | 2004-07-15 | Nippon Steel Corporation | 溶接熱影響部の耐軟化性に優れたバーリング性高強度鋼板およびその製造方法 |
US9149868B2 (en) | 2005-10-20 | 2015-10-06 | Nucor Corporation | Thin cast strip product with microalloy additions, and method for making the same |
US10071416B2 (en) | 2005-10-20 | 2018-09-11 | Nucor Corporation | High strength thin cast strip product and method for making the same |
US9999918B2 (en) | 2005-10-20 | 2018-06-19 | Nucor Corporation | Thin cast strip product with microalloy additions, and method for making the same |
ATE432375T1 (de) * | 2006-10-30 | 2009-06-15 | Thyssenkrupp Steel Ag | Verfahren zum herstellen von stahl-flachprodukten aus einem mit silizium legierten mehrphasenstahl |
ES2325962T3 (es) * | 2006-10-30 | 2009-09-25 | Thyssenkrupp Steel Ag | Procedimiento para fabricar productos planos de acero a partir de un acero multifasico microaleado con boro. |
ES2367713T3 (es) * | 2007-08-15 | 2011-11-07 | Thyssenkrupp Steel Europe Ag | Acero de fase dual, producto plano de un acero de fase dual tal y procedimiento para la fabricación de un producto plano. |
EP2028282B1 (de) | 2007-08-15 | 2012-06-13 | ThyssenKrupp Steel Europe AG | Dualphasenstahl, Flachprodukt aus einem solchen Dualphasenstahl und Verfahren zur Herstellung eines Flachprodukts |
CN101555574B (zh) * | 2008-04-11 | 2011-06-15 | 宝山钢铁股份有限公司 | 一种高回火抗力耐磨钢 |
US20110277886A1 (en) | 2010-02-20 | 2011-11-17 | Nucor Corporation | Nitriding of niobium steel and product made thereby |
DE102010056264C5 (de) * | 2010-12-24 | 2020-04-09 | Voestalpine Stahl Gmbh | Verfahren zum Erzeugen gehärteter Bauteile |
EP2489748B1 (de) | 2011-02-18 | 2017-12-13 | ThyssenKrupp Steel Europe AG | Aus einem Komplexphasenstahl hergestelltes warmgewalztes Stahlflachprodukt und Verfahren zu dessen Herstellung |
CN102864377B (zh) * | 2012-09-10 | 2015-05-20 | 山西太钢不锈钢股份有限公司 | 一种热轧带钢及其制造方法 |
CN105624570A (zh) * | 2016-03-10 | 2016-06-01 | 绵阳市联合传动科技有限公司 | 高强度低碳合金钢制动鼓 |
CN107653361B (zh) * | 2017-10-14 | 2020-02-18 | 上海鑫昌众星实业有限公司 | 一种深加工汽车钢板的制备工艺 |
DE102018122901A1 (de) | 2018-09-18 | 2020-03-19 | Voestalpine Stahl Gmbh | Verfahren zur Herstellung ultrahochfester Stahlbleche und Stahlblech hierfür |
Citations (6)
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DE2201855B1 (de) * | 1972-01-15 | 1973-07-26 | Hoesch Werke Ag | Verfahren zur Herstellung von hochfesten,gut schweissbaren und kaltverformbaren Grob- und Mittelblechen und deren Verwendung |
JPS52114518A (en) * | 1976-03-24 | 1977-09-26 | Sumitomo Metal Ind Ltd | Production of hot rolled high tensile steel material having excellent bending workability |
EP0080809A1 (de) * | 1981-10-31 | 1983-06-08 | Nippon Steel Corporation | Verfahren zur Herstellung von Stahl mit hoher Festigkeit und hoher Kaltzähigkeit |
JPS58185719A (ja) * | 1982-04-20 | 1983-10-29 | Kobe Steel Ltd | 高降伏比型非調質熱延高張力鋼板の製造法 |
DE3323255A1 (de) * | 1982-06-28 | 1983-12-29 | Sumitomo Metal Industries, Ltd., Osaki, Osaka | Warmgewalztes, hochfestes titanstahlblech und verfahren zu seiner herstellung |
JPS60190518A (ja) * | 1984-03-12 | 1985-09-28 | Kobe Steel Ltd | 冷間加工性にすぐれた熱処理省略型高張力鋼の製造方法 |
Family Cites Families (3)
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AU527097B2 (en) * | 1979-01-12 | 1983-02-17 | Nippon Steel Corporation | Artifically aged low yield to tensile strength ratio high strength steel sheet |
DE3007560A1 (de) * | 1980-02-28 | 1981-09-03 | Kawasaki Steel Corp., Kobe, Hyogo | Verfahren zum herstellen von warmgewalztem blech mit niedriger streckspannung, hoher zugfestigkeit und ausgezeichnetem formaenderungsvermoegen |
TW363082B (en) * | 1994-04-26 | 1999-07-01 | Nippon Steel Corp | Steel sheet having high strength and being suited to deep drawing and process for producing the same |
-
1997
- 1997-03-13 DE DE19710125A patent/DE19710125A1/de not_active Ceased
-
1998
- 1998-03-10 WO PCT/EP1998/001376 patent/WO1998040522A1/de active IP Right Grant
- 1998-03-10 AT AT98916911T patent/ATE206472T1/de active
- 1998-03-10 CZ CZ19993219A patent/CZ290944B6/cs not_active IP Right Cessation
- 1998-03-10 DE DE59801637T patent/DE59801637D1/de not_active Expired - Lifetime
- 1998-03-10 CN CN988040182A patent/CN1082549C/zh not_active Expired - Fee Related
- 1998-03-10 EP EP98916911A patent/EP0966547B1/de not_active Expired - Lifetime
- 1998-03-10 PL PL98335639A patent/PL186831B1/pl not_active IP Right Cessation
- 1998-03-10 CA CA002284124A patent/CA2284124A1/en not_active Abandoned
- 1998-03-10 ES ES98916911T patent/ES2165157T3/es not_active Expired - Lifetime
- 1998-03-12 ZA ZA982115A patent/ZA982115B/xx unknown
- 1998-03-12 AR ARP980101113A patent/AR010130A1/es unknown
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DE2201855B1 (de) * | 1972-01-15 | 1973-07-26 | Hoesch Werke Ag | Verfahren zur Herstellung von hochfesten,gut schweissbaren und kaltverformbaren Grob- und Mittelblechen und deren Verwendung |
JPS52114518A (en) * | 1976-03-24 | 1977-09-26 | Sumitomo Metal Ind Ltd | Production of hot rolled high tensile steel material having excellent bending workability |
EP0080809A1 (de) * | 1981-10-31 | 1983-06-08 | Nippon Steel Corporation | Verfahren zur Herstellung von Stahl mit hoher Festigkeit und hoher Kaltzähigkeit |
JPS58185719A (ja) * | 1982-04-20 | 1983-10-29 | Kobe Steel Ltd | 高降伏比型非調質熱延高張力鋼板の製造法 |
DE3323255A1 (de) * | 1982-06-28 | 1983-12-29 | Sumitomo Metal Industries, Ltd., Osaki, Osaka | Warmgewalztes, hochfestes titanstahlblech und verfahren zu seiner herstellung |
JPS60190518A (ja) * | 1984-03-12 | 1985-09-28 | Kobe Steel Ltd | 冷間加工性にすぐれた熱処理省略型高張力鋼の製造方法 |
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DATABASE WPI Section Ch Week 7745, Derwent World Patents Index; Class M24, AN 77-79982Y, XP002072981 * |
PATENT ABSTRACTS OF JAPAN vol. 008, no. 019 (C - 207) 26 January 1984 (1984-01-26) * |
PATENT ABSTRACTS OF JAPAN vol. 010, no. 043 (C - 329) 20 February 1986 (1986-02-20) * |
Cited By (18)
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---|---|---|---|---|
EP1367143B1 (de) | 2001-02-27 | 2016-07-20 | JFE Steel Corporation | Feuerverzinktes stahlblech mit hoher festigkeit und herstellungsverfahren dafür |
CN100339500C (zh) * | 2001-08-29 | 2007-09-26 | 西德玛有限公司 | 超高强度钢组合物、超高强度钢产品的生产方法以及获得的产品 |
EP1288322A1 (de) * | 2001-08-29 | 2003-03-05 | Sidmar N.V. | Ultrahochfester Stahl, Produkt aus diesem Stahl und Verfahren zu seiner Herstellung |
WO2003018858A1 (en) * | 2001-08-29 | 2003-03-06 | Sidmar N.V. | An ultra high strength steel composition, the process of production of an ultra high strength steel product and the product obtained |
US8715427B2 (en) | 2001-08-29 | 2014-05-06 | Arcelormittal France Sa | Ultra high strength steel composition, the process of production of an ultra high strength steel product and the product obtained |
DE10161465C1 (de) * | 2001-12-13 | 2003-02-13 | Thyssenkrupp Stahl Ag | Verfahren zum Herstellen von Warmband |
US7998285B2 (en) | 2002-11-19 | 2011-08-16 | Industeel Creusot | Abrasion-resistant steel plate |
JP2006506528A (ja) * | 2002-11-19 | 2006-02-23 | アンドユストウエル・クルゾ | 耐摩耗性鋼板を製造する方法および得られた板 |
US7462251B2 (en) | 2002-11-19 | 2008-12-09 | Usinor | Method for making an abrasion-resistant steel plate |
KR101010593B1 (ko) * | 2002-11-19 | 2011-01-25 | 인더스틸 크뢰쏘 | 내마모성 강판 제조 방법 및 제조된 강판 |
JP2006506526A (ja) * | 2002-11-19 | 2006-02-23 | アンドユストウエル・クルゾ | 耐摩耗性鋼板を製造する方法および得られた鋼板 |
AU2009201117B2 (en) * | 2002-11-19 | 2011-09-29 | Industeel France | An abrasion resistant steel workpiece |
AU2009201117B8 (en) * | 2002-11-19 | 2011-11-10 | Industeel France | An abrasion resistant steel workpiece |
WO2004048618A1 (fr) * | 2002-11-19 | 2004-06-10 | Industeel Creusot | Procede pour fabriquer une tole en acier resistant a l'abrasion et tôle obtenue |
FR2847271A1 (fr) * | 2002-11-19 | 2004-05-21 | Usinor | Procede pour fabriquer une tole en acier resistant a l'abrasion et tole obtenue |
EP1918402A1 (de) * | 2006-10-30 | 2008-05-07 | ThyssenKrupp Steel AG | Verfahren zum Herstellen von Stahl-Flachprodukten aus einem ein Komplexphasen-Gefüge bildenden Stahl |
WO2008052917A1 (de) * | 2006-10-30 | 2008-05-08 | Thyssenkrupp Steel Ag | Verfahren zum herstellen von stahl-flachprodukten aus einem ein komplexphasen-gefüge bildenden stahl |
US11225697B2 (en) | 2014-12-19 | 2022-01-18 | Nucor Corporation | Hot rolled light-gauge martensitic steel sheet and method for making the same |
Also Published As
Publication number | Publication date |
---|---|
CN1252105A (zh) | 2000-05-03 |
AR010130A1 (es) | 2000-05-17 |
CN1082549C (zh) | 2002-04-10 |
DE19710125A1 (de) | 1998-09-17 |
PL186831B1 (pl) | 2004-03-31 |
EP0966547B1 (de) | 2001-10-04 |
DE59801637D1 (de) | 2001-11-08 |
CA2284124A1 (en) | 1998-09-17 |
ZA982115B (en) | 1998-09-14 |
ES2165157T3 (es) | 2002-03-01 |
CZ290944B6 (cs) | 2002-11-13 |
EP0966547A1 (de) | 1999-12-29 |
CZ321999A3 (cs) | 2000-07-12 |
ATE206472T1 (de) | 2001-10-15 |
PL335639A1 (en) | 2000-05-08 |
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