GB363306A - Improved method of increasing the creep limit or strength of metals and alloys - Google Patents
Improved method of increasing the creep limit or strength of metals and alloysInfo
- Publication number
- GB363306A GB363306A GB21401/30A GB2140130A GB363306A GB 363306 A GB363306 A GB 363306A GB 21401/30 A GB21401/30 A GB 21401/30A GB 2140130 A GB2140130 A GB 2140130A GB 363306 A GB363306 A GB 363306A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- chromium
- alloys
- nickel
- iron
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The creep limit or strength of iron, nickel, chromium, iron nickel-chromium alloys containing over 50 per cent of nickel and 12-30 per cent of chromium, and iron-chromium alloys containing 20-40 per cent of chromium, for use as machine elements or furnace parts at temperatures above the recrystallization temperature, is increased by preheating or pre-annealing the metals or alloys at temperatures between 1100 DEG C. and the melting-point of the metal or alloy and cooling at such a rate so as to avoid internal stresses. The temperature used may be 30-50 DEG below the melting-point, and the alloys may contain up to 10 per cent of molybdenum, up to 8 per cent of aluminium, up to 10 per cent of tungsten or up to 6 per cent of manganese. Examples of alloys are-(1) chromium 15 per cent, nickel 61 per cent, iron 20 per cent and manganese 4 per cent. (2) Chromium 20 per cent, nickel 73,5 per cent, iron 1,5 per cent, manganese 3 per cent, molybdenum 2 per cent. Specification 342,676 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE363306X | 1929-12-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB363306A true GB363306A (en) | 1931-12-15 |
Family
ID=6310600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB21401/30A Expired GB363306A (en) | 1929-12-16 | 1930-07-15 | Improved method of increasing the creep limit or strength of metals and alloys |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB363306A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1087355B (en) * | 1954-04-05 | 1960-08-18 | Electric Furnace Prod Co | Heat-developing additives for steel melts |
| US3343928A (en) * | 1965-10-15 | 1967-09-26 | Du Pont | Ferrous substrate having an iron-chromium-aluminum alloy coating thereon |
| FR2331404A1 (en) * | 1975-11-12 | 1977-06-10 | Maschf Augsburg Nuernberg Ag | METHOD OF MANUFACTURING AND / OR HEAT TREATMENT OF SHAPED METAL PARTS |
-
1930
- 1930-07-15 GB GB21401/30A patent/GB363306A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1087355B (en) * | 1954-04-05 | 1960-08-18 | Electric Furnace Prod Co | Heat-developing additives for steel melts |
| US3343928A (en) * | 1965-10-15 | 1967-09-26 | Du Pont | Ferrous substrate having an iron-chromium-aluminum alloy coating thereon |
| FR2331404A1 (en) * | 1975-11-12 | 1977-06-10 | Maschf Augsburg Nuernberg Ag | METHOD OF MANUFACTURING AND / OR HEAT TREATMENT OF SHAPED METAL PARTS |
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