GB1214428A - Method of producing dispersion strengthened nickel-chromium alloys - Google Patents
Method of producing dispersion strengthened nickel-chromium alloysInfo
- Publication number
- GB1214428A GB1214428A GB2029669A GB2029669A GB1214428A GB 1214428 A GB1214428 A GB 1214428A GB 2029669 A GB2029669 A GB 2029669A GB 2029669 A GB2029669 A GB 2029669A GB 1214428 A GB1214428 A GB 1214428A
- Authority
- GB
- United Kingdom
- Prior art keywords
- oxide
- dense
- matrix
- wrought
- hydrogen
- 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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
- C22C49/02—Alloys containing metallic or non-metallic fibres or filaments characterised by the matrix material
- C22C49/08—Iron group metals
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/001—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides
- C22C32/0015—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides with only single oxides as main non-metallic constituents
- C22C32/0026—Matrix based on Ni, Co, Cr or alloys thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
Abstract
1,214,428. Sintered Ni-Cr dispersion hardened alloys. SHERRITT GORDON MINES Ltd. April 21, 1969, No.20296/69. Headings C7D and C7F. A wrought oxide dispersion strengthened Ni alloy containing 10-35% Cr is made by depositing the Cr on a wrought, dense, shaped Ni matrix containing the oxide dispersion and homogenizing the deposited Cr in the Ni matrix by heating at 1095‹-1320‹C in a protective atmosphere such as hydrogen. The dispersed oxide which may be ThO 2 , YO 2 or CeO having a particle size of 10- 50m, microns is mixed with Ni powder of 0À2-0À5 micron size to form 2-4% volume. The powder mixture may either be pressed to a green compact of 60% density e.g. by isostatic compaction and then hot worked to a dense body or formed directly into a dense body by extrusion. The Ni-oxide body is then preferably cold worked and annealed in repeated cycles such that the area reduction is less than 20% per cycle, and annealing is at 1205‹C. The dense sintered body is then chromized either by electro-plating or by pack diffusion at 1095‹- 1320‹ C in a pack of Cr and Al 2 O 3 . Following chromizing, homogenizing heat treatment is then carried out at 1095‹-1320‹C in hydrogen. The micro structure of the Ni matrix is retained in the finished Ni-Cr alloy. Co, W, Mo, Nb and Ta may be included in the composition either by mixing with the Ni and oxide powders prior to processing or introduced later by vapour deposition.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2029669A GB1214428A (en) | 1969-04-21 | 1969-04-21 | Method of producing dispersion strengthened nickel-chromium alloys |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2029669A GB1214428A (en) | 1969-04-21 | 1969-04-21 | Method of producing dispersion strengthened nickel-chromium alloys |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1214428A true GB1214428A (en) | 1970-12-02 |
Family
ID=10143626
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2029669A Expired GB1214428A (en) | 1969-04-21 | 1969-04-21 | Method of producing dispersion strengthened nickel-chromium alloys |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1214428A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2491926A (en) * | 2011-06-13 | 2012-12-19 | Charles Malcolm Ward-Close | Changing the solute level of shaped metal objects |
CN117403138A (en) * | 2023-10-24 | 2024-01-16 | 上海交通大学 | Corrosion-resistant oxide dispersion strengthening steel and preparation method thereof |
-
1969
- 1969-04-21 GB GB2029669A patent/GB1214428A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2491926A (en) * | 2011-06-13 | 2012-12-19 | Charles Malcolm Ward-Close | Changing the solute level of shaped metal objects |
CN117403138A (en) * | 2023-10-24 | 2024-01-16 | 上海交通大学 | Corrosion-resistant oxide dispersion strengthening steel and preparation method thereof |
CN117403138B (en) * | 2023-10-24 | 2024-05-14 | 上海交通大学 | Corrosion-resistant oxide dispersion strengthening steel and preparation method thereof |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |