DE19606817A1 - Maraging steel having good corrosion resistance - Google Patents
Maraging steel having good corrosion resistanceInfo
- Publication number
- DE19606817A1 DE19606817A1 DE19606817A DE19606817A DE19606817A1 DE 19606817 A1 DE19606817 A1 DE 19606817A1 DE 19606817 A DE19606817 A DE 19606817A DE 19606817 A DE19606817 A DE 19606817A DE 19606817 A1 DE19606817 A1 DE 19606817A1
- Authority
- DE
- Germany
- Prior art keywords
- alloy
- weight
- elements
- addition
- curing
- 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
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/02—Hardening by precipitation
-
- 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
- C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
-
- 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Heat Treatment Of Steel (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
Die Erfindung betrifft eine durch Wärmebehandlung aushärt bare korrosionsbeständige Maraging-Legierung, die außer Eisen zur Erzielung hoher Festigkeit, hoher Härte, hoher Biegewechselfestigkeit, hoher Wärme- und Relaxations beständigkeit Nickel, Chrom und/oder Molybdän enthält und zusätzlich weitere, die Aushärtung verbessernde Elemente enthalten kann.The invention relates to a curing by heat treatment bare corrosion-resistant maraging alloy except Iron for high strength, high hardness, high Bending fatigue strength, high heat and relaxation Contains nickel, chromium and / or molybdenum and in addition, further, the curing-enhancing elements may contain.
Derartige korrosionsbeständige Maraging-Legierungen sind beispielsweise in der Zeitschrift DEW Techn. Berichte 1973, S. 157 beschrieben. Es werden hier Legierungen mit 11,4 Gew.-% Chrom, 2,0 Gew.-% Molybdän, 7,9 Gew.-% Nickel, 5,3 Gew.-% Kobalt, 1,07 Gew.-% Titan, 0,007 Gew.-% Kohlen stoff, Rest Eisen verwendet und durch eine Wärmebehandlung gehärtet. Die Gehalte an Nickel, Kobalt, Chrom und Molybdän sind so abgestimmt, daß bei der Abkühlung von hohen Temperaturen eine Martensitumwandlung erfolgt, so daß ein sogenannter korrosionsbeständiger Maraging-Stahl entsteht.Such corrosion resistant maraging alloys are For example, in the journal DEW Techn. Reports 1973, P. 157. There are alloys with 11.4 Wt% chromium, 2.0 wt% molybdenum, 7.9 wt% nickel, 5.3 Wt% cobalt, 1.07 wt% titanium, 0.007 wt% coals fabric, residual iron used and through a heat treatment hardened. The contents of nickel, cobalt, chromium and molybdenum are tuned so that when cooling from high Temperatures a martensite transformation takes place, so that a so-called corrosion-resistant maraging steel is produced.
Aufgabe der Erfindung ist es, eine Legierung vorzuschlagen, die gleichzeitig eine hohe Korrosionsbeständigkeit, eine hohe Festigkeit und eine Härte über 550 HV aufweist.The object of the invention is to propose an alloy the same time a high corrosion resistance, a high strength and hardness above 550 HV.
Diese Aufgabe wird erfindungsgemäß durch eine Legierung entsprechend dem Kennzeichen des Patentanspruchs 1 gelöst. Insbesondere hat sich herausgestellt, daß man nach dem Aushärten eine hohe Härte über 550 HV bei bestehender Korrosionsbeständigkeit erhält, wenn man als Zusätze die Kombination von Molybdän bzw. Wolfram und Beryllium in bestimmten Mengen vorsieht. This object is achieved by an alloy solved according to the characterizing part of patent claim 1. In particular, it has been found that after the Curing a high hardness above 550 HV at existing Corrosion resistance is obtained when using as additives Combination of molybdenum or tungsten and beryllium in certain quantities.
Es ist zwar bereits bekannt, daß bei martensitisch aushärtbaren Stählen eine Verbesserung der Härte nach der Aushärtung erzielt werden kann. Dies geht beispielsweise aus der Zeitschrift METALS and MATERIALS, 1971, S. 99-105 hervor. Hier wird bei Stählen, die Chrom und Nickel enthalten, Beryllium allein oder in Kombination mit Titan hinzugesetzt. Diese bekannten Legierungen erreichen jedoch nach Aushärtung nur eine maximale Vickershärte von ca. 510 bzw. 51 HRC nach Rockwell.Although it is already known that in martensitic hardenable steels improve the hardness after the Curing can be achieved. This goes for example from the journal METALS and MATERIALS, 1971, pp. 99-105 out. This is used for steels that are chromium and nickel contain beryllium alone or in combination with titanium added. However, these known alloys reach after curing only a maximum Vickers hardness of about 510 or 51 HRC to Rockwell.
Eine höhere Härte läßt sich aber überraschenderweise erreichen, wenn man eine FeNiCr(Mo, W)-Legierung mit gegebenenfalls weiteren Elementen, wie Co, Ti, Nb, Cu, Al, Mn, Si, V sowie Seltenen Erden oder Mischmetall verwendet und zusätzlich zu dem vorhandenen Molybdän bzw. Wolfram, Be mit 0,1 bis 0,5 Gew.-% zusetzt. Hier wird nach Aushärtung aus dem lösungsgeglühten Zustand eine Vickershärte von größer als 550 HV erreicht.A higher hardness can be but surprisingly when using a FeNiCr (Mo, W) alloy with optionally further elements, such as Co, Ti, Nb, Cu, Al, Mn, Si, V and rare earths or mischmetal used and in addition to the existing molybdenum or tungsten, Be with 0.1 to 0.5 wt .-% added. Here is after curing from the solution annealed condition a Vickers hardness of greater than 550 HV achieved.
Beispielsweise wurde die Legierung
Fe-8Ni-12Cr-5Mo-0,25Be-0.25Ti folgendermaßen behandelt:
Nach dem Warmwalzen im Bereich 1000-1100°C und Lösungs
glühen im Bereich 1000-1100°C, gefolgt von Abschrecken
auf Raumtemperatur bzw. Ofenabkühlung auf Raumtemperatur
erreicht sie folgende Eigenschaften:For example, the alloy Fe-8Ni-12Cr-5Mo-0.25Be-0.25Ti was treated as follows:
After hot rolling in the range 1000-1100 ° C and solution annealing in the range 1000-1100 ° C, followed by quenching to room temperature and furnace cooling to room temperature, it achieves the following properties:
Nach einer Wärmebehandlung von 4 h bei 470°C wurden folgende Werte gemessen:After a heat treatment of 4 h at 470 ° C were measured the following values:
Noch höhere Festigkeiten lassen sich erzielen, wenn man den Werkstoff nach der Lösungsglühung und Abkühlung auf Raumtemperatur kaltverformt. Nach 95%iger Kaltverformung erhält man folgendes:Even higher strengths can be achieved if the Material after the solution annealing and cooling on Room temperature cold formed. After 95% cold deformation you get the following:
Nach einer daran anschließenden Wärmebehandlung von 4 h bei 470°C ergibt sich:After a subsequent heat treatment of 4 h at 470 ° C results:
Claims (6)
Fe mit 47,4-82,4 Gew.-%,
Ni mit 6-9 Gew.-%
Cr mit 11-15 Gew.-%
Mo + ½ W mit 0,5-6% Gew.-%
je 0-6 Gew.-% eines oder mehrerer der Elemente Co, Cu
je 0-1 Gew.-% eines oder mehrerer der Elemente Ti, Nb, Al, Si, Mn, V
0-0,1 Gew.-% eines oder mehrerer der Seltenen Erden bzw. Mischmetall,
C und N mit 0-0.1%
und daß zusätzlich zur Erzielung einer besonders hohen Härte sowohl Be mit 0,1 bis 0,5 Gew.-% in der Legierung enthalten ist.1 may contain by heat treating hardenable corrosion-resistant maraging alloy, which in addition to iron contains in order to achieve high strength, high hardness, high bending strength, high heat and stress relaxation nickel, chromium and / or molybdenum and additionally further, the curing improving elements, characterized in that, in addition to the usual melt-caused impurities , the alloy proportionally contains the following elements:
Fe 47.4-82.4 wt .-%,
Ni with 6-9 wt .-%
Cr with 11-15% by weight
Mo + ½ W with 0.5-6% wt.
each 0-6 wt .-% of one or more of the elements Co, Cu
each 0-1 wt .-% of one or more of the elements Ti, Nb, Al, Si, Mn, V
0-0.1% by weight of one or more of the rare earths or mischmetal,
C and N with 0-0.1%
and that in addition to achieving a particularly high hardness, both Be and 0.1 to 0.5 wt% are contained in the alloy.
Ni 6-9 Gew.-%
Cr 11-15 Gew.-%
Mo + ½ W 0.5-6 Gew.-%
Co 0-5 Gew.-%
Ti, Nb, Al, Si, V, Mn mit je 0-0,5 Gew.-%
Cu mit 0-4 Gew.-%
C und N mit 0-0.05 Gew.-%
sowie eines oder mehrere der Seltenen Erden bzw. Mischmetallen mit 0 bis 0,05 Gew.-% und Be mit 0,1 bis 0,5 Gew.-% einschließlich üblicher Verunreinigungen. 2. An alloy according to claim 1, characterized in that the alloy except Fe proportionally contains the following elements:
Ni 6-9% by weight
Cr 11-15% by weight
Mo + ½ W 0.5-6% by weight
Co 0-5% by weight
Ti, Nb, Al, Si, V, Mn with 0-0.5 wt .-% each
Cu with 0-4 wt .-%
C and N 0-0.05 wt%
and one or more of the rare earths or mixed metals with 0 to 0.05 wt .-% and Be with 0.1 to 0.5 wt .-%, including conventional impurities.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19606817A DE19606817A1 (en) | 1995-11-09 | 1996-02-23 | Maraging steel having good corrosion resistance |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29517799U DE29517799U1 (en) | 1995-11-09 | 1995-11-09 | High-strength, corrosion-resistant maraging alloy |
DE19606817A DE19606817A1 (en) | 1995-11-09 | 1996-02-23 | Maraging steel having good corrosion resistance |
Publications (1)
Publication Number | Publication Date |
---|---|
DE19606817A1 true DE19606817A1 (en) | 1997-05-15 |
Family
ID=8015238
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE29517799U Expired - Lifetime DE29517799U1 (en) | 1995-11-09 | 1995-11-09 | High-strength, corrosion-resistant maraging alloy |
DE19606817A Ceased DE19606817A1 (en) | 1995-11-09 | 1996-02-23 | Maraging steel having good corrosion resistance |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE29517799U Expired - Lifetime DE29517799U1 (en) | 1995-11-09 | 1995-11-09 | High-strength, corrosion-resistant maraging alloy |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0773307A1 (en) |
JP (1) | JPH09143626A (en) |
DE (2) | DE29517799U1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10242322A1 (en) * | 2002-09-12 | 2004-04-01 | Vacuumschmelze Gmbh & Co. Kg | Golf club head used in golf club manufacture is made from a rust-free age-hardened maraging steel containing alloying additions of nickel, chromium, titanium, beryllium |
US6793745B2 (en) * | 2000-01-17 | 2004-09-21 | Vacuumschmelze Gmbh & Co. Kg | Maraging type spring steel |
GB2581976A (en) * | 2019-03-05 | 2020-09-09 | Rolls Royce Plc | Manufacturing method |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR743179A (en) * | 1933-03-25 | |||
DE1103601B (en) * | 1952-01-14 | 1961-03-30 | Dr Reinhard Straumann | Process for the production of power spring belts |
DE1186889B (en) * | 1954-10-18 | 1965-02-11 | Straumann Inst Ag | Process for the manufacture of springs for clocks and similar devices |
DE1558508A1 (en) * | 1966-03-01 | 1970-04-09 | Int Nickel Ltd | Use of a martensite-hardenable chrome-nickel steel |
DE1458359B2 (en) * | 1963-07-11 | 1971-05-06 | Deutsche Edelstahlwerke AG, 4150Krefeld | USING A STEEL ALLOY AS HIGH-STRENGTH TURNING RUST-RESISTANT STRUCTURAL STEEL |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU427089A1 (en) * | 1972-09-04 | 1974-05-05 | ||
JPS49119814A (en) * | 1973-03-19 | 1974-11-15 | ||
SU1180399A1 (en) * | 1984-03-27 | 1985-09-23 | Предприятие П/Я А-3697 | Stainless maraging steel |
JPS6220857A (en) * | 1985-07-19 | 1987-01-29 | Daido Steel Co Ltd | High-strength stainless steel |
JP3381011B2 (en) * | 1994-09-02 | 2003-02-24 | 株式会社日本製鋼所 | Precipitation hardening stainless steel |
-
1995
- 1995-11-09 DE DE29517799U patent/DE29517799U1/en not_active Expired - Lifetime
-
1996
- 1996-02-23 DE DE19606817A patent/DE19606817A1/en not_active Ceased
- 1996-11-01 JP JP30549896A patent/JPH09143626A/en active Pending
- 1996-11-04 EP EP96117637A patent/EP0773307A1/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR743179A (en) * | 1933-03-25 | |||
DE1103601B (en) * | 1952-01-14 | 1961-03-30 | Dr Reinhard Straumann | Process for the production of power spring belts |
DE1186889B (en) * | 1954-10-18 | 1965-02-11 | Straumann Inst Ag | Process for the manufacture of springs for clocks and similar devices |
DE1458359B2 (en) * | 1963-07-11 | 1971-05-06 | Deutsche Edelstahlwerke AG, 4150Krefeld | USING A STEEL ALLOY AS HIGH-STRENGTH TURNING RUST-RESISTANT STRUCTURAL STEEL |
DE1558508A1 (en) * | 1966-03-01 | 1970-04-09 | Int Nickel Ltd | Use of a martensite-hardenable chrome-nickel steel |
Non-Patent Citations (2)
Title |
---|
ENGINEER,Serosh, STEINEN,Albert: Technologische Eigenschaften des nichtrostenden martensitaushärtenden Stahles DEW-Vakumelt- Ultrafort 403. In: DEW-Technische Berichte, 13.Bd., 1973, H.3, S.157-163 * |
KNIGHT,R.F., CONTRACTOR,G.P.: Properties of a series of beryllium-bearing stainless maraging steels. In: Metals And Materials, March 1971, S.99-105 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6793745B2 (en) * | 2000-01-17 | 2004-09-21 | Vacuumschmelze Gmbh & Co. Kg | Maraging type spring steel |
DE10242322A1 (en) * | 2002-09-12 | 2004-04-01 | Vacuumschmelze Gmbh & Co. Kg | Golf club head used in golf club manufacture is made from a rust-free age-hardened maraging steel containing alloying additions of nickel, chromium, titanium, beryllium |
GB2581976A (en) * | 2019-03-05 | 2020-09-09 | Rolls Royce Plc | Manufacturing method |
Also Published As
Publication number | Publication date |
---|---|
EP0773307A1 (en) | 1997-05-14 |
DE29517799U1 (en) | 1996-02-08 |
JPH09143626A (en) | 1997-06-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8110 | Request for examination paragraph 44 | ||
R002 | Refusal decision in examination/registration proceedings | ||
R006 | Appeal filed | ||
R008 | Case pending at federal patent court | ||
R082 | Change of representative |
Representative=s name: WESTPHAL, MUSSGNUG & PARTNER PATENTANWAELTE MI, DE |
|
R071 | Expiry of right | ||
R003 | Refusal decision now final | ||
R010 | Appeal proceedings settled by withdrawal of appeal(s) or in some other way |