FR2241624A1 - Fabrication of articles in chromium steels - using spheroidised structure and formation of martensite after deformation - Google Patents
Fabrication of articles in chromium steels - using spheroidised structure and formation of martensite after deformationInfo
- Publication number
- FR2241624A1 FR2241624A1 FR7424112A FR7424112A FR2241624A1 FR 2241624 A1 FR2241624 A1 FR 2241624A1 FR 7424112 A FR7424112 A FR 7424112A FR 7424112 A FR7424112 A FR 7424112A FR 2241624 A1 FR2241624 A1 FR 2241624A1
- Authority
- FR
- France
- Prior art keywords
- max
- martensite
- spheroidised
- fabrication
- articles
- 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
- 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
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
- C21D1/32—Soft annealing, e.g. spheroidising
-
- 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
- C21D7/00—Modifying the physical properties of iron or steel by deformation
- C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
-
- 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
- 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
- C21D7/00—Modifying the physical properties of iron or steel by deformation
- C21D7/13—Modifying the physical properties of iron or steel by deformation by hot working
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Heat Treatment Of Steel (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The steel has the compsn. C 0.3% max, Cr 6% max, Ni 3% max, Mn 4% max. bal Fe with optionally Mo 4% max, Cu 1.25% max, Al 1% max and Si 1% max. In addition the relation: 5(%C) + (%Cr) +3 2/3 (% Ni) + (% Mn) + (%Mo) + 2/3 (% Cu) + 1/2 (% Al) + 1/4 (% Si) >=5 should hold. Pref. the compsn. should be C 0.01-0.1%, Cr 2.5-3.5%, either Ni 1.5-2.5% or Mn 1.75-3.25%, Mo 0.5% max, Cu 1% max. Al 0.2% max. and Si 0.5% max. with A >=5.5. The martensite steel is heated to a temp between the recrylstallisation temp and the A, temp. to soften the steel, pref. at 649-732 degrees C for 24-48 hrs. It is then air cooled and formed into the desired shape while cold. The formed article is then heated into the austenite region for 10 min. min., normally at 816-899 degrees C for 30 min, and air cooled. This gives a martensitic structure, which is strong (1000 N/mm2 tensile strength) with reasonable (16%) elongation.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US37911873A | 1973-07-13 | 1973-07-13 | |
| US37911973A | 1973-07-13 | 1973-07-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2241624A1 true FR2241624A1 (en) | 1975-03-21 |
| FR2241624B3 FR2241624B3 (en) | 1977-05-06 |
Family
ID=27008483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7424112A Granted FR2241624A1 (en) | 1973-07-13 | 1974-07-11 | Fabrication of articles in chromium steels - using spheroidised structure and formation of martensite after deformation |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE2433512A1 (en) |
| ES (1) | ES428201A1 (en) |
| FR (1) | FR2241624A1 (en) |
| SE (1) | SE7409174L (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2341782A1 (en) * | 1976-02-17 | 1977-09-16 | Honda Motor Co Ltd | DISC BRAKE DISC AND METHOD OF MANUFACTURING |
| EP0124354A1 (en) * | 1983-04-27 | 1984-11-07 | Kabushiki Kaisha Toshiba | A method of manufacturing a shadow mask for a colour cathode ray tube |
| WO2009141556A1 (en) | 2008-05-06 | 2009-11-26 | Industeel Creusot | Steel with high properties for solid parts. |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1986004097A1 (en) * | 1985-01-14 | 1986-07-17 | Nisshin Steel Co., Ltd. | Highly corrosion-resistant steel alloy for use in exhaust gas member |
| DE19610675C1 (en) * | 1996-03-19 | 1997-02-13 | Thyssen Stahl Ag | Dual phase steel for cold rolled sheet or strip - contg. manganese@, aluminium@ and silicon |
| DE10315416A1 (en) * | 2002-06-27 | 2004-01-22 | Ina-Schaeffler Kg | Fixing the position of a bolt |
-
1974
- 1974-07-11 FR FR7424112A patent/FR2241624A1/en active Granted
- 1974-07-12 SE SE7409174A patent/SE7409174L/en unknown
- 1974-07-12 DE DE2433512A patent/DE2433512A1/en active Pending
- 1974-07-12 ES ES428201A patent/ES428201A1/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2341782A1 (en) * | 1976-02-17 | 1977-09-16 | Honda Motor Co Ltd | DISC BRAKE DISC AND METHOD OF MANUFACTURING |
| EP0124354A1 (en) * | 1983-04-27 | 1984-11-07 | Kabushiki Kaisha Toshiba | A method of manufacturing a shadow mask for a colour cathode ray tube |
| WO2009141556A1 (en) | 2008-05-06 | 2009-11-26 | Industeel Creusot | Steel with high properties for solid parts. |
| RU2463373C2 (en) * | 2008-05-06 | 2012-10-10 | Эндюстель Крёзо | High-strength steel for massive parts |
| US9103008B2 (en) | 2008-05-06 | 2015-08-11 | Industeel Creusot | High-characteristic steel for large-size parts |
Also Published As
| Publication number | Publication date |
|---|---|
| ES428201A1 (en) | 1976-07-16 |
| SE7409174L (en) | 1975-01-14 |
| FR2241624B3 (en) | 1977-05-06 |
| DE2433512A1 (en) | 1975-01-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |