Magnetostrictive alloy with excellent mechanical performance and preparation method for magnetostrictive alloy

A magnetostrictive and alloy technology, applied in the field of magnetostrictive alloys and their preparation, can solve the problems of restricting the application of Fe-Ga alloys, unsatisfactory mechanical properties, and high cost, and achieve high yield, excellent mechanical properties, and low cost. low effect

Active Publication Date: 2019-07-30
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

However, Tb-Dy-Fe alloy has limited its application due to its high cost and high brittleness; although Fe-Ga alloy has great advantages in cost compared with Tb-Dy-Fe alloy, its mechanical

Method used

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  • Magnetostrictive alloy with excellent mechanical performance and preparation method for magnetostrictive alloy
  • Magnetostrictive alloy with excellent mechanical performance and preparation method for magnetostrictive alloy
  • Magnetostrictive alloy with excellent mechanical performance and preparation method for magnetostrictive alloy

Examples

Experimental program
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Example Embodiment

[0036] Example 1

[0037] Magnetostrictive alloy Fe with excellent mechanical properties 75 (NiCoMn) 25 The specific preparation steps are as follows:

[0038] (1) First, polish the oxide scale on the surface of Fe, Co, Ni and Mn, and then put it in a beaker containing acetone solution, and place the beaker in an ultrasonic cleaning machine for 5 minutes, then take it out and place it on the filter paper. Dry the hair dryer for later use;

[0039] (2) The Ni, Co, and Mn with the polished surface are mixed according to the atomic ratio of 1:1:1, and in the order of Ni, Co, Mn from bottom to top, in the alumina crucible of the high vacuum melting and casting system Lay out the raw materials in the middle; then, first vacuum the high vacuum melting and casting system to 2×10 -2 Below Pa, fill with argon gas (purity of 99.99vol%) until the internal pressure reaches 0.05MPa, and then use induction heating to smelt Ni, Co and Mn into molten metal. After the metal raw materials are complet...

Example

[0041] Examples 2-7

[0042] On the basis of Example 1, the atomic ratio of Fe to NiCoMn alloy ingot in step (3) was sequentially modified from 75:25 to 67:33, 71:29, 63:37, 79:21, 83:17 and 87 :13. If other steps and conditions remain unchanged, Fe will be obtained in turn 67 (NiCoMn) 33 , Fe 71 (NiCoMn) 29 , Fe 63 (NiCoMn) 37 , Fe 79 (NiCoMn) 21 , Fe 83 (NiCoMn) 17 And Fe 87 (NiCoMn) 13 .

[0043] x=13, 17, 21 and 25, the corresponding Fe 100-x (NiCoMn) x Single-phase BCC structure or mainly BCC structure, the structure of BCC phase is as Figure 4 As shown, it is composed of lath-like structure with small misorientation and lath clusters with large misorientation. This structure makes the alloy have extremely high strength while ensuring high elongation, such as figure 1 Shown. When x=29, 33 and 37, the corresponding Fe 100-x (NiCoMn) x For BCC+FCC two phases coexist and FCC phase dominates, such as Figure 5 As shown, the two phases of the alloy have obvious boundaries, so it ...

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Abstract

The invention relates to a magnetostrictive alloy with excellent mechanical performance and a preparation method for the magnetostrictive alloy and belongs to the technical field of magnetic materials. For Fe 100-x(NiCoMn)x as an alloy provided by the invention, x is equal to 13-37, and the alloy has excellent mechanical performance and low driving field while good magnetostriction performance isensured; and moreover, the alloy is simple, convenient and rapid in preparation process, low in defect rate and high in rate of finished products, is environmentally friendly, does not need to use expensive large-scale instrument equipment and can be popularized and applied in industrial production with low cost.

Description

technical field [0001] The invention relates to a magnetostrictive alloy with excellent mechanical properties and a preparation method thereof, belonging to the technical field of magnetic materials. Background technique [0002] Magnetostrictive materials are an important class of magnetoelastic materials, which can realize the mutual conversion between electromagnetic energy and mechanical energy. , wave oil recovery and other fields have important application prospects. At present, Tb-Dy-Fe alloy and Fe-Ga alloy are two types of magnetostrictive alloys that attract the most attention. However, Tb-Dy-Fe alloy has limited its application due to its high cost and high brittleness; although Fe-Ga alloy has great advantages in cost compared with Tb-Dy-Fe alloy, its mechanical properties , especially the mechanical properties under tensile conditions are still not ideal, which greatly restricts the application of Fe-Ga alloys in practical engineering fields. Therefore, it is...

Claims

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Application Information

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IPC IPC(8): C22C33/06C22C38/04C22C38/10C22C38/08H01L41/20
CPCC22C33/06C22C38/105C22C38/04H10N35/85
Inventor 聂志华金昊谭成文王沿东
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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