GB1137952A - Thermomechanical treatment of steel - Google Patents
Thermomechanical treatment of steelInfo
- Publication number
- GB1137952A GB1137952A GB12340/66A GB1234066A GB1137952A GB 1137952 A GB1137952 A GB 1137952A GB 12340/66 A GB12340/66 A GB 12340/66A GB 1234066 A GB1234066 A GB 1234066A GB 1137952 A GB1137952 A GB 1137952A
- Authority
- GB
- United Kingdom
- Prior art keywords
- steel
- temperature
- ferrite
- austenite
- working
- 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.)
- Expired
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
Abstract
1,137,952. Improving physical properties. UNITED STATES STEEL CORP. 21 March, 1966 [1 April, 1965], No. 12340/66. Heading B3V. [Also in Division C7] Steel containing 0À05% to 0À6% of carbon and up to 5% in total of alloying elements is heated to a temperature such that the structure consists of one-third to two-thirds austenite and the balance ferrite, and is then worked to produce at least 25%, and preferably 50% or more of deformation, the steel being maintained at not more than 25‹ F. above, or not more than 50‹ F. below, the initial heating temperature. The steel is then cooled at a rate appropriate to the formation of martensite, bainite or pearlite as desired, the final structure consisting of fine interspersed elongated grains of ferrite and austenite transformation product. The steel may be heated directly to the working temperature or may be first fully austenitized and then cooled thereto; to refine the grain the steel may be first fully austenitized and then quenched to below the Ms temperature prior to heating to the working temperature. A formula defining the optimum working temperature (at which the structure contains equal amounts of austenite and ferrite) in terms of the composition of the steel, is given. Working may be carried out by extrusion, forging or rolling, with intermediate reheating if necessary.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US44467665A | 1965-04-01 | 1965-04-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1137952A true GB1137952A (en) | 1968-12-27 |
Family
ID=23765897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB12340/66A Expired GB1137952A (en) | 1965-04-01 | 1966-03-21 | Thermomechanical treatment of steel |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3423252A (en) |
| BE (1) | BE678804A (en) |
| DE (1) | DE1508450A1 (en) |
| ES (1) | ES324784A1 (en) |
| GB (1) | GB1137952A (en) |
| NL (1) | NL6604399A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4410374A (en) | 1978-06-22 | 1983-10-18 | Nippon Kokan Kabushiki Kaisha | Steel having excellent vibration attenuation performance and method of manufacturing the same |
| GB2143763A (en) * | 1983-07-23 | 1985-02-20 | Berchem & Schaberg Gmbh | Process for production of low-alloy steel forging |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3502514A (en) * | 1968-01-30 | 1970-03-24 | United States Steel Corp | Method of processing steel |
| US3645801A (en) * | 1968-12-20 | 1972-02-29 | Bethlehem Steel Corp | Method of producing rolled steel having high-strength and low-impact transition temperature |
| IT1049173B (en) * | 1975-09-12 | 1981-01-20 | Italsider Spa | INTERMEDIATE HARDENING HEAT TREATMENT AND SPEED RECOVERY WITH PARASITE CURRENTS AND DEVICE FOR THE APPLICATION OF THE TREATMENT TO A HIGH PRODUCTIVITY LAMINATION PLANT FOR FLAT PRODUCTS |
| US4088511A (en) * | 1976-07-29 | 1978-05-09 | Lasalle Steel Company | Steels combining toughness and machinability |
| US4047979A (en) * | 1976-10-08 | 1977-09-13 | United States Steel Corporation | Heat treatment for improving the toughness of high manganese steels |
| US4067756A (en) * | 1976-11-02 | 1978-01-10 | The United States Of America As Represented By The United States Department Of Energy | High strength, high ductility low carbon steel |
| US4426235A (en) | 1981-01-26 | 1984-01-17 | Kabushiki Kaisha Kobe Seiko Sho | Cold-rolled high strength steel plate with composite steel structure of high r-value and method for producing same |
| EP0128139A4 (en) * | 1982-12-09 | 1985-09-16 | Univ California | High strength, low carbon, dual phase steel rods and wires and process for making same. |
| US4613385A (en) * | 1984-08-06 | 1986-09-23 | Regents Of The University Of California | High strength, low carbon, dual phase steel rods and wires and process for making same |
| JPS62199718A (en) * | 1986-02-25 | 1987-09-03 | Nippon Steel Corp | Direct softening method for rolling material of steel for machine structural use |
-
1965
- 1965-04-01 US US444676A patent/US3423252A/en not_active Expired - Lifetime
-
1966
- 1966-03-21 GB GB12340/66A patent/GB1137952A/en not_active Expired
- 1966-03-28 ES ES0324784A patent/ES324784A1/en not_active Expired
- 1966-03-31 BE BE678804D patent/BE678804A/xx unknown
- 1966-04-01 NL NL6604399A patent/NL6604399A/xx unknown
- 1966-04-01 DE DE19661508450 patent/DE1508450A1/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4410374A (en) | 1978-06-22 | 1983-10-18 | Nippon Kokan Kabushiki Kaisha | Steel having excellent vibration attenuation performance and method of manufacturing the same |
| GB2143763A (en) * | 1983-07-23 | 1985-02-20 | Berchem & Schaberg Gmbh | Process for production of low-alloy steel forging |
Also Published As
| Publication number | Publication date |
|---|---|
| ES324784A1 (en) | 1967-04-16 |
| DE1508450A1 (en) | 1969-10-23 |
| BE678804A (en) | 1966-09-30 |
| NL6604399A (en) | 1966-10-03 |
| US3423252A (en) | 1969-01-21 |
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