FIELD: metallurgy.
SUBSTANCE: invention concerns area of constant magnets receiving with fine-grain structure from alloys on the basis of system neodymium -iron-boron or praseodymium - iron-boron, holding increased magnetic characteristic. Method includes blank casting and further its deformation by method of equal-channel angular pressing (ECAP) in intersected vertical and horizontal channels with intersection angle equal to 90-135° in range of temperatures 500-800°C with achieving accumulated logarithmic degree of deformation not less then 0.5. Method can include further processes of hot deformation by method of settling or rolling or extrusion of blank. Method can include also additional one-phase or multistep annealing 500-1000°C at different stages of treatment.
EFFECT: increasing of magnets magnetic properties, increase in productivity of process magnets receiving.
4 cl, 4 ex, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| MAGNETICALLY RIGID ALLOY | 1993 |
|
RU2044101C1 |
| METHOD TO PRODUCE IRON-RARE EARTH METALS-BORON ANISOTROPIC PERMANENT MAGNETIC SYSTEMS | 1992 |
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| METHOD TO PRODUCE SINTERED HIGHLY ENERGY-INTENSIVE PERMANENT MAGNET FROM ALLOY BASED ON Nd-Fe-B | 2013 |
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| MATERIAL FOR RARE-EARTH PERMANENT MAGNETS AND ITS PRODUCTION PROCESS | 2000 |
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| NANOSTRUCTURED TITANIUM-NICKEL ALLOY WITH SHAPE MEMORY EFFECT AND METHOD OF MAKING BAR THEREOF | 2012 |
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