GB863730A - Metal composition having improved oxidation- and corrosion-resistance and magnetic characteristics, and method of preparing same - Google Patents
Metal composition having improved oxidation- and corrosion-resistance and magnetic characteristics, and method of preparing sameInfo
- Publication number
- GB863730A GB863730A GB400759A GB400759A GB863730A GB 863730 A GB863730 A GB 863730A GB 400759 A GB400759 A GB 400759A GB 400759 A GB400759 A GB 400759A GB 863730 A GB863730 A GB 863730A
- Authority
- GB
- United Kingdom
- Prior art keywords
- range
- alloy
- followed
- corrosion
- resistance
- 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
- 239000002184 metal Substances 0.000 title 1
- 239000000956 alloy Substances 0.000 abstract 3
- 229910045601 alloy Inorganic materials 0.000 abstract 3
- 238000000137 annealing Methods 0.000 abstract 2
- 238000002844 melting Methods 0.000 abstract 2
- 230000008018 melting Effects 0.000 abstract 2
- 238000007254 oxidation reaction Methods 0.000 abstract 2
- 239000000470 constituent Substances 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 230000007797 corrosion Effects 0.000 abstract 1
- 238000005260 corrosion Methods 0.000 abstract 1
- 230000002939 deleterious effect Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 230000001590 oxidative effect Effects 0.000 abstract 1
- 238000002161 passivation Methods 0.000 abstract 1
- 238000005554 pickling Methods 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/78—Combined heat-treatments not provided for above
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Hard Magnetic Materials (AREA)
Abstract
An alloy having good oxidation and corrosion resistance, together with low magnetic remanence contains: Cr 12 to 40%, Mn 0 to 2%, C not more than 0.2%, Fe balance, and is produced by melting the constituents together, at least one stage between initial melting and the cooling of the solid alloy being carried out at subatmospheric pressure. The furnace atmosphere is preferably non-oxidizing and nonnitriding. By this means de-oxidation is effected without the necessity of adding separate de-oxidizing elements, the residues of which have a deleterious effect on magnetic remanence. Any annealing necessary during working of the alloy is carried out within the range 600-1100 DEG C. in the substantial absence of air, and the magnetic properties are finally enhanced by annealing in the absence of air within the range 600 DEG -1300 DEG C, possibly followed by a second similar anneal within the range 550 DEG -950 DEG C, the temperature being at least 50 DEG C below the temperature of the first anneal. This heat treatment may be followed by a chemical pickling or similar treatment followed by a passivation treatment.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR863730X | 1958-02-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB863730A true GB863730A (en) | 1961-03-22 |
Family
ID=9343355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB400759A Expired GB863730A (en) | 1958-02-06 | 1959-02-04 | Metal composition having improved oxidation- and corrosion-resistance and magnetic characteristics, and method of preparing same |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB863730A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998033944A1 (en) * | 1997-02-03 | 1998-08-06 | Crs Holdings, Inc. | Process for improving magnetic performance in a free-machining ferritic stainless steel |
-
1959
- 1959-02-04 GB GB400759A patent/GB863730A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998033944A1 (en) * | 1997-02-03 | 1998-08-06 | Crs Holdings, Inc. | Process for improving magnetic performance in a free-machining ferritic stainless steel |
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