EP1963542A1 - Leichtbaustahl - Google Patents
LeichtbaustahlInfo
- Publication number
- EP1963542A1 EP1963542A1 EP06777081A EP06777081A EP1963542A1 EP 1963542 A1 EP1963542 A1 EP 1963542A1 EP 06777081 A EP06777081 A EP 06777081A EP 06777081 A EP06777081 A EP 06777081A EP 1963542 A1 EP1963542 A1 EP 1963542A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- weight
- triplex
- strength
- lightweight steel
- steel
- 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.)
- Ceased
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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- 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
Definitions
- the present invention relates to a high-strength ⁇ / ⁇ / ⁇ triplex lightweight steel and its use.
- the present invention relates to a method for producing a high-strength ⁇ / ⁇ / ⁇ -triplex-l-lightweight steel.
- DE 1 262 613 B1 discloses the use of a lightweight steel with high strength, wear resistance and relatively low weight as a material for aircraft components.
- the lightweight steel known from this publication has high proportions of light alloy components with 4 to 20 wt.% Al, 18 to 40 wt.% Mn and 0.15 to 2 wt.
- this lightweight steel can also have 0 to 4% by weight of Nb and 0 to 3% by weight of Si.
- the lightweight steel can also contain up to 2% by weight of boron, up to 2% by weight of cerium and up to 10% by weight of cobalt, nickel, molybdenum, tungsten, vanadium, copper, tantalum, titanium, zirconium and bis contain 5 wt .-% chromium.
- a disadvantage of this lightweight steel is that the proportion is relatively heavier, so that this steel has a comparatively high specific density.
- the lightweight steel also has relatively high proportions of very expensive microalloying elements (in particular Nb). Furthermore, relatively high proportions of microalloying elements can possibly have a negative impact on the theological properties of lightweight steel.
- ⁇ / ⁇ / ⁇ triplex lightweight steel is known.
- This lightweight steel is a three-phase structure, which is formed from ⁇ -ferrite, y-austenite and a martensitic ⁇ phase. Because of these three phases, this lightweight steel is also called ⁇ / ⁇ / ⁇ triplex lightweight steel.
- the ⁇ / ⁇ / ⁇ triplex lightweight structural steel known from this publication has the following composition (in% by weight):
- Further alloying elements can be Ti (0.03-2% by weight), N ( ⁇ 0.3% by weight), Nb ( ⁇ 0.5% by weight) and V ( ⁇ 0.5% by weight) ) be.
- a disadvantage of this ⁇ / ⁇ / ⁇ lightweight steel consists in the comparatively high proportions of Si and / or Mg and / or Ga and / or Be, which can have a disadvantageous effect on its rheological properties.
- a disadvantage of the lightweight steels known from the prior art is that their rheological properties are not balanced for numerous areas of application.
- the known steels often have too little elongation for a given tensile strength or an insufficient tensile strength for a given elongation.
- the present invention is based on the object of providing a high-strength ⁇ / ⁇ / ⁇ triplex lightweight structural steel which has more balanced rheological properties, in particular a higher strength with a higher elongation at a low specific weight.
- Ti, Nb, Cr, V, N, B with a content of less than 1% by weight in total and individually less than 0.5% by weight
- the ⁇ / ⁇ / ⁇ -triplex lightweight steel which comprises an ⁇ -ferrite phase, a ⁇ -austenite phase and a ⁇ -carbide phase, is characterized in particular by the fact that the microalloying elements Ti, Nb, Cr, V, N, B are only present with a content of less than 1% by weight in total.
- a further characteristic of the ⁇ / ⁇ / ⁇ triplex lightweight structural steel is that the microalloying elements Ti, Nb, Cr, V 1 N, B are individually present with a content of less than 0.5% by weight.
- the low content of the microalloying elements Ti, Nb 1 Cr, V, N, B has a positive effect on the theological properties of the ⁇ / ⁇ / ⁇ triplex lightweight structural steel.
- the ⁇ / ⁇ / ⁇ triplex lightweight structural steel has a greater elongation for a given tensile strength or a greater tensile strength for a given elongation than the lightweight steels known from the prior art.
- the ⁇ / y / ⁇ triplex lightweight structural steel has a specific density of 6.5-7.2 g / cm 3 .
- the ⁇ / ⁇ / ⁇ triplex lightweight structural steel has a lower density than the steels used for motor vehicle components, which usually have a specific density of approximately 7.3-7.8 g / cm 3 .
- the high-strength ⁇ / ⁇ / ⁇ triplex lightweight steel has 25-35% by weight Mn.
- the ⁇ / ⁇ / ⁇ triplex lightweight structural steel has 8 to 12% by weight, in particular approximately 10% by weight, of aluminum.
- the ⁇ / ⁇ / ⁇ triplex lightweight steel has 1 to 1.3% by weight of C.
- the ⁇ / ⁇ / ⁇ triplex lightweight steel has an Nb content of less than 0.5% by weight, in particular less than 0.3% by weight. -%, preferably less than 0.1 wt .-%.
- the 0.2% proof stress R p0 , 2 is the stress at which the material sample has a permanent elongation of 0.2% after the relief.
- a 80 denotes the elongation at break standardized to a sample length of 80 mm.
- the inventive method for producing a high strength ⁇ / ⁇ / ⁇ -triplex lightweight structural steel is characterized according to claim 8 characterized in that the ⁇ / ⁇ / ⁇ -triplex lightweight structural steel at a temperature of about 300 0 C to about 700 0 C, preferably is stored at a temperature of about 550 0 C.
- Investigations have shown that the rheological properties of the ⁇ / ⁇ / ⁇ triplex lightweight steel can be adapted to the respective requirements by aging in the temperature range between approximately 300 ° C. to 700 ° C. It has also been shown that the rheological properties of the ⁇ / v / K triplex lightweight steel can be adjusted by different aging times.
- a use of a high-strength ⁇ / ⁇ / ⁇ triplex lightweight steel, which is produced according to claim 8, is proposed for a motor vehicle component.
- the rheological properties of the motor vehicle component can be specifically varied and adapted by aging before or after its manufacture.
- another parameter to influence the rheological properties of the motor vehicle component is the aging time.
- the ⁇ / ⁇ / ⁇ -triplex lightweight steel is characterized, among other things, by the fact that the microalloying elements Ti, Nb, Cr, V, N, B are present in total with a content of less than 1% by weight.
- the ⁇ / ⁇ / ⁇ triplex preferably has Lightweight steel has a specific density of 6.5 - 7.2 g / cm 3 and therefore has a relatively low specific density compared to conventional steels.
- a stress-strain diagram of the three-phase high-strength ⁇ / ⁇ / ⁇ lightweight structural steel Fe-26Mn-11AI-1, 1 C is shown.
- the stress ⁇ (in MPa) is plotted against the relative strain ⁇ (in%) with different aging times. It can be seen that the theological properties of the ⁇ / ⁇ / ⁇ triplex lightweight steel, in particular the 0.2% proof stress R p o, 2 or the tensile strength R m and the elongation at break A 80 can be modified in a targeted manner by the different aging times.
- the reference value for the elongation at break A 80 is an initial measuring length of 80 mm (tensile test DIN 50125 - H20x80).
- the elongation at break A 80 is approx. 63%. It can be seen that the elongation at break A 80 with an aging time of 2.1 minutes is in the range of about 66% and is therefore slightly increased compared to the sample that has not been aged.
- the tensile strength R m that is the maximum tensile stress that occurs in the sample, is essentially identical in both cases at about 900 MPa. A relatively short aging time therefore hardly affects the tensile strength R m and increases the elongation at break A 80 slightly.
- the elongation at break is already on the order of about 32%. It can be seen that, after a relatively short aging time, the elongation at break A 80 is almost halved compared to the sample that has not been aged.
- the tensile strength R m is on the order of approximately 990 MPa. It can be seen that the maximum stress (tensile strength R m ) with a lower relative elongation ⁇ ⁇ 2% occurs than in the sample that was not outsourced or only outsourced for a short time. This tendency can also be seen in samples that have been stored for even longer.
- the elongation at break A 8O is only about 10%.
- the mechanical stress in the plastic region of the stress-strain curve increases as the aging takes longer.
- the ⁇ / ⁇ / ⁇ triplex lightweight steel thus becomes harder with increasing aging time.
- the tensile strength is over 1100 MPa.
- the elongation at break A 80 is then below 3%.
- this stress is approximately 800 MPa with an aging time of 4.6 minutes, whereas it exceeds 1000 MPa with aging times of 210 minutes and longer.
- theological properties of the ⁇ / y / ⁇ triplex lightweight steel can be adjusted both before and after the component is generated by the targeted heating.
- the swapping may be performed at the production of the ⁇ / ⁇ / ⁇ triplex lightweight structural steel preferably in a temperature range between about 300 ° C to about 700 0 C, with a paging at a temperature in the order of between 500 0 C and 600 0 C particularly is preferred.
- MN 15-40% by weight
- AI 5-15% by weight
- Si 0-3% by weight
- C 0.5-2% by weight
- Fe rest.
- the ⁇ / ⁇ / ⁇ triplex lightweight structural steel comprises the microalloying elements Ti, Nb 1 Cr, V, N, B with proportions, the sum of which is less than 1% by weight, and each individually a proportion of less than 0 , 5% by weight.
- the lightweight steel preferably has a manganese content of between approximately 25-35% by weight. It is preferred that the aluminum content is about 10% by weight and the carbon content is between 1 and about 1.3% by weight.
- the ⁇ / ⁇ / ⁇ triplex lightweight structural steel therefore preferably has an Nb content of less than 0.5% by weight, in particular less than 0.3% by weight, preferably less than 0.1% by weight. on.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200510057599 DE102005057599A1 (de) | 2005-12-02 | 2005-12-02 | Leichtbaustahl |
PCT/EP2006/008384 WO2007062702A1 (de) | 2005-12-02 | 2006-08-26 | Leichtbaustahl |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1963542A1 true EP1963542A1 (de) | 2008-09-03 |
Family
ID=37199145
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06777081A Ceased EP1963542A1 (de) | 2005-12-02 | 2006-08-26 | Leichtbaustahl |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1963542A1 (de) |
DE (1) | DE102005057599A1 (de) |
WO (1) | WO2007062702A1 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007059007A1 (de) | 2007-12-06 | 2009-06-18 | Salzgitter Flachstahl Gmbh | Verfahren zum Erzeugen eines Warmbandes und aus einem Triplex-Leichtbaustahl hergestelltes Warmband |
WO2010052052A1 (de) * | 2008-11-07 | 2010-05-14 | Siemens Aktiengesellschaft | Rotor für eine strömungsmaschine |
US20120121452A1 (en) * | 2009-03-11 | 2012-05-17 | Salzgitter Flachstahl Gmbh | Method for producing a hot rolled strip and hot rolled strip produced from triplex lightweight steel |
US20110076176A1 (en) * | 2009-09-28 | 2011-03-31 | General Electric Company | Cast compressor articles and methods of forming same |
DE102011117135A1 (de) * | 2010-11-26 | 2012-05-31 | Salzgitter Flachstahl Gmbh | Energie speicherndes Behältnis aus Leichtbaustahl |
KR20160064345A (ko) * | 2014-11-27 | 2016-06-08 | 한국기계연구원 | 용접부 물성이 우수한 오스테나이트계 경량 고강도 강재 제조 방법 |
RU2650952C1 (ru) * | 2017-12-05 | 2018-04-18 | Юлия Алексеевна Щепочкина | Сталь |
US11420296B2 (en) * | 2020-09-17 | 2022-08-23 | Te-Fu FANG | Welding filler wire for fusion welding precipitation-hardened austenitic Fe—Mn—Al—C alloys |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB841366A (en) * | 1957-07-02 | 1960-07-13 | Langley Alloys Ltd | Improvements in iron aluminium alloys |
US3111405A (en) * | 1958-06-16 | 1963-11-19 | Langley Alloys Ltd | Aluminum-manganese-iron alloys |
DE1182844B (de) * | 1959-06-23 | 1964-12-03 | Ford Werke Ag | Austenitische Stahllegierung |
BE600063R (fr) * | 1960-02-25 | 1961-05-29 | Langley Alloys Ltd | Perfectionnements apportés aux alliages de fer et d'aluminium |
GB2220674A (en) * | 1988-06-29 | 1990-01-17 | Nat Science Council | Alloys useful at elevated temperatures |
US4968357A (en) * | 1989-01-27 | 1990-11-06 | National Science Council | Hot-rolled alloy steel plate and the method of making |
DE19610675C1 (de) * | 1996-03-19 | 1997-02-13 | Thyssen Stahl Ag | Mehrphasenstahl und Verfahren zu seiner Herstellung |
DE19727759C2 (de) * | 1997-07-01 | 2000-05-18 | Max Planck Inst Eisenforschung | Verwendung eines Leichtbaustahls |
DE10128544C2 (de) * | 2001-06-13 | 2003-06-05 | Thyssenkrupp Stahl Ag | Höherfestes, kaltumformbares Stahlblech, Verfahren zu seiner Herstellung und Verwendung eines solchen Blechs |
WO2003029504A2 (de) * | 2001-09-28 | 2003-04-10 | Daimlerchrysler Ag | Hochfester duplex-/triplex-leichtbaustahl und seine verwendung |
-
2005
- 2005-12-02 DE DE200510057599 patent/DE102005057599A1/de not_active Withdrawn
-
2006
- 2006-08-26 EP EP06777081A patent/EP1963542A1/de not_active Ceased
- 2006-08-26 WO PCT/EP2006/008384 patent/WO2007062702A1/de active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2007062702A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102005057599A1 (de) | 2007-06-06 |
WO2007062702A1 (de) | 2007-06-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE60108382T2 (de) | Korrosionsbeständige legierungen der 6000 serien verwendbar für die luftfahrt | |
WO2007062702A1 (de) | Leichtbaustahl | |
DE60225951T2 (de) | Duplexstahllegierung | |
DD255551A5 (de) | Austenitischer stahl verbesserter hochtemperaturfestigkeit und korrosionsbestaendigkeit | |
DE60016534T2 (de) | Verfahren zur Herstellung von Stahlband oder - blech mit verformungsinduziertem Martensit | |
DE4233269A1 (de) | Hochfester federstahl | |
DE60020263T2 (de) | Verwendung eines ausscheidungsgehärteten martensitischen edelstahls | |
DE102014101317A1 (de) | Al-Gusslegierung | |
DE3541792A1 (de) | Bolzen und verfahren zu seiner herstellung | |
DE102018209267A1 (de) | Kolben für Verbrennungsmotoren und Verwendung eines Kolbens für Verbrennungsmotoren | |
DE3300392A1 (de) | Austenitischer nichtrostender stahl von ueberaus hoher temperaturbestaendigkeit | |
DE3624969A1 (de) | Weichmagnetischer rostfreier stahl fuer kaltverformung | |
DE2010055C3 (de) | Verfahren zum Herstellen eines Werkstoffs mit hoher Zeitstandfestigkeit und Zähigkeit | |
DE19836360B4 (de) | Kolbenringmaterial mit hervorragender Bearbeitbarkeit und Resistenz gegen Fressen sowie Kolbenring hieraus | |
DE1458323A1 (de) | Halbaustenitischer,ausscheidungshaertbarer,rostfreier Chrom-Nickel-Aluminium-Stahl | |
DE60014331T2 (de) | Ausscheidungshätbarer und rostfreier stahl mit verbesserter verarbeitbarkeit für besonderen einsatzzwecke | |
DE10124393A1 (de) | Hitzebeständiger Stahl, Verfahren zur thermischen Behandlung von hitzebeständigem Stahl, und Kompenten aus hitzebeständigem Stahl | |
WO2017162450A1 (de) | Verfahren zum temperaturbehandeln eines mangan-stahlzwischenprodukts und stahlzwischenprodukt, das entsprechend temperaturbehandelt wurde | |
DE2209085A1 (de) | Alterungsgehärteter martensitischer Nickelstahl | |
DE1608181A1 (de) | Verwendung eines Nickelstahls | |
EP3763845B1 (de) | Magnesiumlegierung und verfahren zur herstellung derselben | |
EP1382704B1 (de) | Kaltarbeitsstahl mit hohem Verschleisswiderstand | |
EP3072984B1 (de) | Al-cu-mg-li-legierung sowie daraus hergestelltes legierungsprodukt | |
DE102004030021B4 (de) | Gewalztes Produkt | |
DE1903712B2 (de) | Verwendung einer kupfer-aluminiumberyllium-legierung zur herstellung von hochkavitationsfesten gegenstaenden |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20080702 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
17Q | First examination report despatched |
Effective date: 20090603 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: GLATZER, MARTIN Inventor name: KIESE, JUERGEN Inventor name: BRUEX, UDO |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R003 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: VOLKSWAGEN AKTIENGESELLSCHAFT |
|
DAX | Request for extension of the european patent (deleted) | ||
18R | Application refused |
Effective date: 20120324 |