GB478126A - Process for improving the machining qualities of iron-nickel-aluminium alloys - Google Patents
Process for improving the machining qualities of iron-nickel-aluminium alloysInfo
- Publication number
- GB478126A GB478126A GB19108/36A GB1910836A GB478126A GB 478126 A GB478126 A GB 478126A GB 19108/36 A GB19108/36 A GB 19108/36A GB 1910836 A GB1910836 A GB 1910836A GB 478126 A GB478126 A GB 478126A
- Authority
- GB
- United Kingdom
- Prior art keywords
- temperature
- alloy
- nickel
- cooling
- 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
Landscapes
- Heat Treatment Of Steel (AREA)
Abstract
The machining qualities of an iron-nickel-aluminium alloy containing 7-40 per cent of nickel and 5-20 of aluminium are improved by bringing the alloy to a temperature between 700 DEG C. and its melting point and then cooling so that the mean rate of cooling in the range of temperature between the a -g transformation temperature and 500 DEG C. amounts to less than 5 DEG per minute and preferably 1 DEG per minute. The alloy may be kept at the temperature above 700 DEG C. for 15 minutes to 48 hours before cooling and this temperature may be below the a -g transformation temperature. The alloy may be cast, e.g. in a sand mould, and cooled before being heated, or after casting may be cooled as stated above. The alloy after treatment as above is machined and then may be hardened by heating to 1000-1350 DEG C. and quickly cooling to below 500 DEG C. with or without a tempering at 500-700 DEG C. The Specification as open to inspection under Sect. 91 also contained the subject-matter of Specification 478,127, but this subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE478126X | 1935-07-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB478126A true GB478126A (en) | 1938-01-10 |
Family
ID=6542209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB19108/36A Expired GB478126A (en) | 1935-07-22 | 1936-07-10 | Process for improving the machining qualities of iron-nickel-aluminium alloys |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB478126A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3976479A (en) * | 1974-03-12 | 1976-08-24 | The United States Of America As Represented By The United States Energy Research And Development Administration | Alloy solution hardening with solute pairs |
-
1936
- 1936-07-10 GB GB19108/36A patent/GB478126A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3976479A (en) * | 1974-03-12 | 1976-08-24 | The United States Of America As Represented By The United States Energy Research And Development Administration | Alloy solution hardening with solute pairs |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB820099A (en) | Improvements in or relating to crushing and the like rolls | |
| GB478126A (en) | Process for improving the machining qualities of iron-nickel-aluminium alloys | |
| GB478127A (en) | Process for improving the machining qualities of iron-nickel-aluminium-copper alloys | |
| GB390244A (en) | Improvements in the heat treatment of aluminium alloys | |
| US2123886A (en) | Heat treated aluminum base alloy | |
| GB375792A (en) | Improvements relating to processes for improving iron-boron alloys | |
| GB766061A (en) | Improvements in or relating to uranium alloys | |
| GB435316A (en) | Improvements relating to the production of cast iron castings surface hardened or hardenable by the nitrogen hardening process | |
| GB577133A (en) | A process for improving the properties of iron alloy castings | |
| JPS55149771A (en) | Production of aluminum alloy casting | |
| GB375776A (en) | Improvements in processes for improving iron-titanium alloys | |
| GB634870A (en) | Method of treating aluminium magnesium alloys | |
| GB547217A (en) | Improvements in or relating to heat treatment of aluminium base alloy castings | |
| GB405788A (en) | Improvements in or relating to aluminium magnesium alloys and method of making same | |
| GB446042A (en) | Improvements in or relating to aluminium alloys | |
| GB481159A (en) | An improved method for the treatment of materials in the production of permanent magnets | |
| GB454151A (en) | Improvements in or relating to seamless steel alloy vessels | |
| GB247941A (en) | A new or improved process for the manufacture of a highly valuable cast iron with the finest distribution of graphite | |
| GB446246A (en) | A method of manufacturing alloys for permanent magnets | |
| GB382422A (en) | Improvements in hardening processes for aluminium alloys | |
| GB474812A (en) | Improvements in and relating to hardening processes for magnesium base alloys | |
| GB636414A (en) | Aluminium magnesium alloys | |
| GB436202A (en) | Improvements in or relating to ferrous alloys and methods of making same | |
| GB406131A (en) | Improvements in or relating to ferrous alloys | |
| GB431660A (en) | Improvements in or relating to alloys for permanent magnets and to a method of making magnets therefrom |