GB852554A - Improvements in or relating to iron-aluminium materials and to methods of producing such materials - Google Patents
Improvements in or relating to iron-aluminium materials and to methods of producing such materialsInfo
- Publication number
- GB852554A GB852554A GB10582/58A GB1058258A GB852554A GB 852554 A GB852554 A GB 852554A GB 10582/58 A GB10582/58 A GB 10582/58A GB 1058258 A GB1058258 A GB 1058258A GB 852554 A GB852554 A GB 852554A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hours
- heating
- materials
- followed
- aluminium
- 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
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1216—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the working step(s) being of interest
- C21D8/1233—Cold rolling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
-
- 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
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1244—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest
- C21D8/1266—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest between cold rolling steps
-
- 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
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1244—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest
- C21D8/1272—Final recrystallisation annealing
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Power Engineering (AREA)
- Manufacturing Of Steel Electrode Plates (AREA)
Abstract
Magnetic alloys consisting of doubly oriented iron-aluminium alloy containing 3.7% by weight of aluminium and rolled to plate or strip 1 to 18 mils thick has the following characteristics, an induction at 10 oersteds of at least 12,000 gauss and a coercive force not exceeding 0.50 oersted. The required characteristics may be obtained by cold rolling with intermediate anneals, e.g. (a) cold reduction of 60% to 85% followed by heating to 850 DEG C. to 1100 DEG C. for 15 minutes to 3 hours; (b) cold reduction of 80% to 97% of the thickness obtained from (a) followed by heating to above 600 DEG C. (700-850 DEG C.) for 2 hours and then to 1050 DEG C. to 1300 DEG C. for 1/2 to 12 hours; (c) a final cold reduction of 40% to 90% of the thickness obtained from (b) followed by heating to 700 DEG C. to 850 DEG C. for 1 to 10 hours and further slow heating to a higher temperature at an increase of 5 DEG C. to 150 DEG C. per hour to a final temperature of 900 DEG C. to 1200 DEG C. which is maintained for 1 to 12 hours. A non-oxidizing gas atmosphere such as argon or hydrogen may be used during the annealing.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US852554XA | 1957-04-12 | 1957-04-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB852554A true GB852554A (en) | 1960-10-26 |
Family
ID=22190429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB10582/58A Expired GB852554A (en) | 1957-04-12 | 1958-04-02 | Improvements in or relating to iron-aluminium materials and to methods of producing such materials |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB852554A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1227490B (en) * | 1962-12-31 | 1966-10-27 | Kobe Steel Ltd | Process for the production of magnetic iron-aluminum sheet |
| EP1847624A1 (en) * | 2005-02-10 | 2007-10-24 | Yoshihira Okanda | NOVEL Fe-Al ALLOY AND METHOD FOR PRODUCING SAME |
-
1958
- 1958-04-02 GB GB10582/58A patent/GB852554A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1227490B (en) * | 1962-12-31 | 1966-10-27 | Kobe Steel Ltd | Process for the production of magnetic iron-aluminum sheet |
| EP1847624A1 (en) * | 2005-02-10 | 2007-10-24 | Yoshihira Okanda | NOVEL Fe-Al ALLOY AND METHOD FOR PRODUCING SAME |
| EP1847624A4 (en) * | 2005-02-10 | 2008-05-28 | Yoshihira Okanda | NOVEL Fe-Al ALLOY AND METHOD FOR PRODUCING SAME |
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