CN103643179B - The method reducing amorphous band embrittlement degree - Google Patents
The method reducing amorphous band embrittlement degree Download PDFInfo
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- CN103643179B CN103643179B CN201310682853.3A CN201310682853A CN103643179B CN 103643179 B CN103643179 B CN 103643179B CN 201310682853 A CN201310682853 A CN 201310682853A CN 103643179 B CN103643179 B CN 103643179B
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Abstract
The present invention relates to a kind of method reducing amorphous band embrittlement degree, the method includes: configuration foundry alloy, adding a certain amount of trace elements zn alloyage in ferrous alloy, alloying component is according to atom number percentages, and chemical composition is expressed formula and is: (Fe100-xZnx)aSibBc, wherein, the atom percentage content of a, b, c, x is respectively as follows: 78≤a≤82,8.5≤b≤10,10.5≤c≤12,8.5≤x≤10；Master alloy melting, master alloy melting in smelting furnace, adopt the production technology of single roller rapid solidification to prepare amorphous band；Amorphous band is carried out at a certain temperature magnetic-field heat treatment。Present invention composition from band preparation process designs and smelts link starts with, first the composition range of the host element alloy making band maintenance fine magnetic property is determined, and adding appropriate trace element on this basis, obtained amorphous band its embrittlement degree after magnetic-field heat treatment significantly reduces。
Description
Technical field
The present invention relates to amorphous band field, particularly relate to a kind of method reducing amorphous band embrittlement degree。
Background technology
Non-crystaline amorphous metal has the performance of many uniquenesses, such as the performances such as excellent magnetic, corrosion resistance, wearability, high intensity, hardness and toughness, high resistivity and mechanical-electric coupling, a revolution of metallurgical material of being known as。Non-crystaline amorphous metal is solid by super condensation, and during alloy graining, atom has little time ordered arrangement crystallization, and the solid alloy obtained is longrange disorder structure, it does not have the crystal grain of crystal alloy, crystal boundary exist。Due to its excellent performance, technique simply, start to become the research and development emphasis of domestic and international material supply section educational circles from the eighties。In conventional thousands of years, the metal or alloy that the mankind use is all the material of crystalline structure, makes ordered arrangement, forms periodic lattice structure in its three-dimensional atomic space。
Fe-based amorphous alloy is made up of 80%Fe, 20%Si and B metalloid element, it has high saturated magnetic induction (its magnetic induction can reach 1.54T), the each side such as its pcrmeability, exciting curent and iron loss are also better than the feature of stalloy, particularly iron loss low (1/3-1/5 for grain-oriented Si steel sheet), replaces silicon steel to do distribution transformer and can save energy 60-70%。The thickness of strip of Fe-based amorphous alloy is about 0.03mm, is widely used in distribution transformer, high power switching power supply, pulse transformer, magnetic amplifier, intermediate-frequency transformer and inverter iron core, is suitable for 10kHz frequencies below and uses。
During due to Amorphous Alloy Distribution Transformer annual low-load, energy-saving effect is obvious, has been widely recognized at present。But amorphous alloy transformer has the weakness that it is intrinsic, and amorphous alloy material is hard and crisp。Especially through heat treated iron-based non-crystalline alloy band, embrittlement degree is high especially, iron-based non-crystalline alloy will recurring structure relaxation through suitable heat treatment temperature, there is small structural rearrangement in the atom of material itself structure, make internal structure more stable, reduce through heat treated Fe-based amorphous alloy internal stress, it may appear that serious brittle phenomenon。
Summary of the invention
It is an object of the invention to for problem above, provide and a kind of reduce the Fe-based amorphous effective ways with embrittlement degree。
For achieving the above object, the invention provides a kind of method reducing amorphous band embrittlement degree, it is characterised in that described method includes:
Configuration foundry alloy, the trace elements zn alloyage added in ferrous alloy, described alloying component is according to atom number percentages, and its chemical composition is expressed formula and is: (Fe100-xZnx)aSibBc, wherein, the atom percentage content of a, b, c, x is respectively as follows: 78≤a≤82,8.5≤b≤10,10.5≤c≤12,8.5≤x≤10；
Foundry alloy described in melting in smelting furnace；
Adopt the production technology of single roller rapid solidification by the described prepared amorphous band after melting；
Described amorphous band is carried out at 340-360 DEG C of temperature magnetic-field heat treatment。
Further, described method also includes, and amorphous band tests its iron loss and exciting power after magnetic-field heat treatment is annealed。
Further, described method also includes, and the amorphous band after described magnetic-field heat treatment carries out brittle test。
Further, described in carry out brittle test particularly as follows: amorphous band described after taking out magnetic-field heat treatment, ball milling 1 hour in planetary ball mill, use 300 mesh sieve respectively, calculate the sieving rate of described amorphous band。
The present invention has the benefit that present invention composition design from band preparation process and smelting link are started with, first the composition range of the host element alloy making band maintenance fine magnetic property is determined, and adding appropriate trace element on this basis, obtained amorphous band its embrittlement degree after magnetic-field heat treatment significantly reduces。
Accompanying drawing explanation
Fig. 1 is the flow chart that one embodiment of the invention reduces amorphous band embrittlement degree method。
Detailed description of the invention
Below by drawings and Examples, technical scheme is described in further detail。
It is the flow chart reducing amorphous band embrittlement degree method in one embodiment of the invention as shown in Figure 1, as it can be seen, the present invention specifically includes following steps:
Step 101, configuration foundry alloy, add a certain amount of trace elements zn alloyage in ferrous alloy, and described alloying component is according to atom number percentages, and its chemical composition is expressed formula and is: (Fe100-xZnx)aSibBc, wherein, the atom percentage content of a, b, c, x is respectively as follows: 78≤a≤82,8.5≤b≤10,10.5≤c≤12,8.5≤x≤10。
A kind of method reducing amorphous band embrittlement degree provided by the invention is to add appropriate Zn in band foundry alloy smelting process, obtain the amorphous band of relatively low embrittlement degree, adding Zn, to make the reason that the brittle degree of band reduces be because Zn higher for its affinity Al and Ti, because not ensureing to use the pure iron without Al and Ti in raw material, and both elements have a strong impact on the toughness of band, make serious embrittlement after band heat treatment。Zn can reduce both elements and be enriched with in strip surface。Thus reducing band fragility。
Step 102, master alloy melting, master alloy melting in smelting furnace, adopt the production technology of single roller rapid solidification to prepare amorphous band。
Step 103, described amorphous band is carried out at a certain temperature magnetic-field heat treatment。Test iron loss and the exciting power of amorphous band after annealing.
In an embodiment of the present invention, take the value of two groups of a, b, c and x, they are respectively 78.8,9.4,11.7,8.5 and 78.8,9.4,11.7,9 years old, the method design alloying component of amorphous band embrittlement degree is reduced through the present invention, in amorphous ribbon equipment, it is sprayed into, after smelting furnace is smelted, the amorphous band that thickness is 23-28 μm, respectively it is numbered 1 and 2。Meanwhile, as a comparison, it is numbered 3 to the amorphous band method being provided without the present invention and reducing amorphous band embrittlement degree made。And by three groups of above-mentioned amorphous bands after magnetic-field heat treatment, ball milling 1 hour in planetary ball mill, use 300 mesh sieve respectively, calculate the sieving rate of three groups of amorphous bands。Table 1 shows the present invention reduce the method for amorphous band embrittlement degree add the amorphous band made of alloying element with not adopting the inventive method and do not add the amorphous band of alloying element compared with sieving rate low, i.e. its embrittlement degree reduction。
Table 1
| Band sequence number | Alloying component | Sieving rate |
| 1 | (Fe91.5Zn8.5)78.8Si9.4B11.7 | 86 |
| 2 | (Fe91Zn9)78.8Si9.4B11.7 | 85 |
| 3 | Fe78.8Si9.4B11.7 | 91 |
Adopting the present invention to reduce the method for amorphous band embrittlement degree with comparative example, table 3 shows that the magnetic property of the two is suitable。That is the method that the present invention reduces amorphous band embrittlement degree is adopted can't to have influence on the magnetic property of amorphous band。
Table 2
| Band sequence number | Pe/(VA/kg) | P/(W/kg) |
| 1 | 0.18 | 0.156 |
| 2 | 0.81 | 0.161 |
| 3 | 0.184 | 0.157 |
As can be seen from the above data, the amorphous band of the present invention has the magnetic property relevant to common alloying component amorphous band, and embrittlement degree reduces the general amorphous band of amorphous band embrittlement degree method also below being provided without the present invention。
Above-described detailed description of the invention; the purpose of the present invention, technical scheme and beneficial effect have been further described; it is it should be understood that; the foregoing is only the specific embodiment of the present invention; the protection domain being not intended to limit the present invention; all within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention。
Claims (4)
1. the method reducing amorphous band embrittlement degree, it is characterised in that described method includes:
Configuration foundry alloy, the trace elements zn alloyage added in ferrous alloy, described alloying component is according to atom number percentages, and its chemical composition is expressed formula and is: (Fe100-xZnx)aSibBc, wherein, the atom percentage content of a, b, c, x is respectively as follows: 78≤a≤78.8,9.4≤b≤10,11.7≤c≤12,8.5≤x≤10；
Foundry alloy described in melting in smelting furnace；
Described foundry alloy after melting is prepared amorphous band by the production technology adopting single roller rapid solidification；
Described amorphous band is carried out at 340-360 DEG C of temperature magnetic-field heat treatment。
2. the method for reduction amorphous band embrittlement degree according to claim 1, it is characterised in that described method also includes, amorphous band tests its iron loss and exciting power after magnetic-field heat treatment is annealed。
3. the method for reduction amorphous band embrittlement degree according to claim 1, it is characterised in that described method also includes, carries out brittle test by the amorphous band after described magnetic-field heat treatment。
4. the method reducing amorphous band embrittlement degree according to claim 1 or 3, it is characterized in that, described carry out brittle test particularly as follows: amorphous band described after taking out magnetic-field heat treatment, ball milling 1 hour in planetary ball mill, use 300 mesh sieve respectively, calculate the sieving rate of described amorphous band。
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Address after: 266232 No. 9 Xinyuan East Road, LAN Cun town, Jimo, Qingdao, Shandong Patentee after: Qingdao Yunlu Advanced Materials Technology Co., Ltd. Address before: 266232 No. 9 Xinyuan East Road, LAN Cun town, Jimo, Qingdao, Shandong Patentee before: QINGDAO YUNLU ADVANCED MATERIALS TECHNOLOGY CO., LTD. |
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