JPS56146868A - Manufacture of manganese-aluminum-carbon alloy magnet - Google Patents
Manufacture of manganese-aluminum-carbon alloy magnetInfo
- Publication number
- JPS56146868A JPS56146868A JP4936780A JP4936780A JPS56146868A JP S56146868 A JPS56146868 A JP S56146868A JP 4936780 A JP4936780 A JP 4936780A JP 4936780 A JP4936780 A JP 4936780A JP S56146868 A JPS56146868 A JP S56146868A
- Authority
- JP
- Japan
- Prior art keywords
- working
- alloy
- compressive
- magnet
- plastic
- 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.)
- Granted
Links
Abstract
PURPOSE: To manufacture the titled polycrystalline magnet having high performance for peripheral magnetization by subjecting a polycrystalline Mn-Al-C alloy magnet having uniaxial anisotropy to warm free compressive working in the anisotropic direction, especially compressive working divided into a plurality of times through a state with plastic working stopped.
CONSTITUTION: A known Mn-Al-C magnet alloy such as an alloy consisting of 68W73wt% Mn, (1/10Mn-6.6)W(1/3Mn-22.2)%C and the balance Al is prepared, and the structure of the alloy is converted into uniaxial homogeneous fine [001] fibrous structure by a known method such as warm extrusion at the temp. range of 530W830°C. The alloy is then subjected to compressive working divided into a plurality of times through a state with plastic working stopped in the axial direction. At this time, after applying a positive plastic macro-strain in one specified direction, a negative plastic strain is applied in the same direction in a plurality of times so that the compression up to ≥-0.1 logarithmic strain is necessarily made free. As a result, the residual flux density can be increased by about 0.2kg as compared to continuous compressive working equal to this working method in the total quantity of compressive strains.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4936780A JPS56146868A (en) | 1980-04-14 | 1980-04-14 | Manufacture of manganese-aluminum-carbon alloy magnet |
US06/231,625 US4404046A (en) | 1980-02-07 | 1981-02-05 | Method of making permanent magnet of Mn-Al-C alloy |
DE8181300510T DE3168411D1 (en) | 1980-02-07 | 1981-02-06 | Method of making permanent magnet of mn-al-c alloy |
EP81300510A EP0034058B1 (en) | 1980-02-07 | 1981-02-06 | Method of making permanent magnet of mn-al-c alloy |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4936780A JPS56146868A (en) | 1980-04-14 | 1980-04-14 | Manufacture of manganese-aluminum-carbon alloy magnet |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56146868A true JPS56146868A (en) | 1981-11-14 |
JPS6144942B2 JPS6144942B2 (en) | 1986-10-06 |
Family
ID=12829041
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4936780A Granted JPS56146868A (en) | 1980-02-07 | 1980-04-14 | Manufacture of manganese-aluminum-carbon alloy magnet |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56146868A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58192303A (en) * | 1982-05-06 | 1983-11-09 | Matsushita Electric Ind Co Ltd | Manufacture of manganese-aluminum-carbon alloy magnet |
JPS58206105A (en) * | 1982-05-26 | 1983-12-01 | Matsushita Electric Ind Co Ltd | Manufacture of manganese-aluminum-carbon alloy magnet |
JPS6059055A (en) * | 1983-09-13 | 1985-04-05 | Matsushita Electric Ind Co Ltd | Manufacture of manganese-aluminum-carbon alloy magnet |
JPS6059722A (en) * | 1983-09-13 | 1985-04-06 | Matsushita Electric Ind Co Ltd | Preparation of manganese-aluminium-carbon alloy magnet |
JPS6059721A (en) * | 1983-09-13 | 1985-04-06 | Matsushita Electric Ind Co Ltd | Preparation of manganese-aluminium-carbon alloy magnet |
JPS6059720A (en) * | 1983-09-13 | 1985-04-06 | Matsushita Electric Ind Co Ltd | Preparation of manganese-aluminium-carbon alloy magnet |
-
1980
- 1980-04-14 JP JP4936780A patent/JPS56146868A/en active Granted
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58192303A (en) * | 1982-05-06 | 1983-11-09 | Matsushita Electric Ind Co Ltd | Manufacture of manganese-aluminum-carbon alloy magnet |
JPS58206105A (en) * | 1982-05-26 | 1983-12-01 | Matsushita Electric Ind Co Ltd | Manufacture of manganese-aluminum-carbon alloy magnet |
JPH0479122B2 (en) * | 1982-05-26 | 1992-12-15 | Matsushita Electric Ind Co Ltd | |
JPS6059055A (en) * | 1983-09-13 | 1985-04-05 | Matsushita Electric Ind Co Ltd | Manufacture of manganese-aluminum-carbon alloy magnet |
JPS6059722A (en) * | 1983-09-13 | 1985-04-06 | Matsushita Electric Ind Co Ltd | Preparation of manganese-aluminium-carbon alloy magnet |
JPS6059721A (en) * | 1983-09-13 | 1985-04-06 | Matsushita Electric Ind Co Ltd | Preparation of manganese-aluminium-carbon alloy magnet |
JPS6059720A (en) * | 1983-09-13 | 1985-04-06 | Matsushita Electric Ind Co Ltd | Preparation of manganese-aluminium-carbon alloy magnet |
JPH0434804B2 (en) * | 1983-09-13 | 1992-06-09 | Matsushita Electric Ind Co Ltd | |
JPH0434806B2 (en) * | 1983-09-13 | 1992-06-09 | Matsushita Electric Ind Co Ltd | |
JPH0434807B2 (en) * | 1983-09-13 | 1992-06-09 | Matsushita Electric Ind Co Ltd | |
JPH0434805B2 (en) * | 1983-09-13 | 1992-06-09 | Matsushita Electric Ind Co Ltd |
Also Published As
Publication number | Publication date |
---|---|
JPS6144942B2 (en) | 1986-10-06 |
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