CN100447277C - Iron-niobium-silicon alloy - Google Patents
Iron-niobium-silicon alloy Download PDFInfo
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- CN100447277C CN100447277C CNB2005100309162A CN200510030916A CN100447277C CN 100447277 C CN100447277 C CN 100447277C CN B2005100309162 A CNB2005100309162 A CN B2005100309162A CN 200510030916 A CN200510030916 A CN 200510030916A CN 100447277 C CN100447277 C CN 100447277C
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- 229910000676 Si alloy Inorganic materials 0.000 title description 2
- ZCGYZFYVXPYOOE-UHFFFAOYSA-N [Si].[Nb].[Fe] Chemical compound [Si].[Nb].[Fe] ZCGYZFYVXPYOOE-UHFFFAOYSA-N 0.000 title 1
- 239000000956 alloy Substances 0.000 claims abstract description 37
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 36
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 15
- 229910020010 Nb—Si Inorganic materials 0.000 claims abstract description 13
- 229910052742 iron Inorganic materials 0.000 claims abstract description 8
- 239000010955 niobium Substances 0.000 claims description 36
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 30
- 239000000203 mixture Substances 0.000 claims description 15
- 229910052758 niobium Inorganic materials 0.000 claims description 13
- 238000002844 melting Methods 0.000 claims description 10
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 10
- 238000005275 alloying Methods 0.000 claims description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 8
- 230000008018 melting Effects 0.000 claims description 8
- 239000010703 silicon Substances 0.000 claims description 8
- 239000000470 constituent Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 2
- 239000007858 starting material Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 12
- 238000009628 steelmaking Methods 0.000 abstract description 3
- 239000000696 magnetic material Substances 0.000 abstract description 2
- 229910000592 Ferroniobium Inorganic materials 0.000 description 14
- 229910000859 α-Fe Inorganic materials 0.000 description 13
- 229910000831 Steel Inorganic materials 0.000 description 11
- 239000010959 steel Substances 0.000 description 11
- ZFGFKQDDQUAJQP-UHFFFAOYSA-N iron niobium Chemical compound [Fe].[Fe].[Nb] ZFGFKQDDQUAJQP-UHFFFAOYSA-N 0.000 description 10
- 230000005496 eutectics Effects 0.000 description 7
- 229920001296 polysiloxane Polymers 0.000 description 7
- 239000002245 particle Substances 0.000 description 6
- 229910000640 Fe alloy Inorganic materials 0.000 description 4
- 238000005266 casting Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000009466 transformation Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910000905 alloy phase Inorganic materials 0.000 description 3
- 229910001566 austenite Inorganic materials 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 229910000976 Electrical steel Inorganic materials 0.000 description 2
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000001953 recrystallisation Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 229910017082 Fe-Si Inorganic materials 0.000 description 1
- 229910005347 FeSi Inorganic materials 0.000 description 1
- 229910017133 Fe—Si Inorganic materials 0.000 description 1
- 229910001257 Nb alloy Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910002056 binary alloy Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- XWHPIFXRKKHEKR-UHFFFAOYSA-N iron silicon Chemical compound [Si].[Fe] XWHPIFXRKKHEKR-UHFFFAOYSA-N 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000010587 phase diagram Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
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- Soft Magnetic Materials (AREA)
- Hard Magnetic Materials (AREA)
Abstract
This invention relates to a Fe-Nb-Si alloy, which is composed of: Nb 7.0-15.0 wt.%, Si 1.0-8.0 wt.%, Mn less than 0..15 wt.%, P less than 0.05 wt.%, S less than 0.05 wt.%, and Fe. The Fe-Nb-Si alloy has high ductility and high soft magnetic performance, and can be used as a soft magnetic material and an intermediate alloy in steel making. The Fe-Nb-Si alloy also has high mechanical performance, and can be used as a cutter material.
Description
(1) technical field
The present invention relates to Fe-Nb-Si alloy in the iron alloy.
(2) background technology
Ferro-niobium, ferrosilicon all are iron alloys important in the Iron And Steel Industry.Niobium is to have by the NbC that generates in the operation of rolling to stop grain growth, suppress the deformation austenite recrystallization and produce effect, particularly rolling effectively crystal grain thinning in austenitic non-recrystallization zone such as significant precipitation strength effect in steel.Therefore, niobium is that important or even irreplaceable alloy adds element in the Iron and Steel Production.Silicon is the most important alloy element of electrical steel (silicon steel).Silicon has the effect of dwindling the austenite phase region in steel, according to the Fe-Si phasor, silicone content less than the iron silicon alloy of 10at.% the polytypism transformation of α-Fe to γ-Fe will not take place greater than 3.8at.%, and keep single α phase, have excellent soft magnetic performance.But higher silicone content can make material fragility increase, even causes the crisp generation of silicon.
Owing to all can form very crisp intermetallic compound between Fe, Si, the Nb, as Fe
2Nb, Nb
5Si
3, FeSi etc., therefore, have in the process of material of premium properties in exploration, the FeNbSi alloy is not considered to a good selection, only is used as the melting master alloy.
At present, the steel-making of supplying on the market is niobium content 63wt.% (about 50at.%) standard ferro-niobium with the main kind of ferro-niobium, about 1560 ℃ of fusing point.In Iron and Steel Production, general when the molten steel ladle refining, the interpolation and carry out alloying.After ferro-niobium drops into molten steel, need the regular hour to go fusing, the granularity of ferro-niobium is big more, and it is long more to melt the needed time.Therefore, fully melt in order to guarantee ferro-niobium, general requirement the casting before, the residence time sufficiently long of molten steel, the granularity of ferro-niobium is then less than 40mm.
In the casting production process of ferrocolumbium member, the superheating temperature of molten steel will be subjected to some restrictions.For the ease of the composition adjustment, and guarantee that the ferro-niobium that is added can fully melt, and then will consider to select for use low-melting ferrocolumbium.According to FeNb binary alloy equilibrium phase diagram, the alloy of content of niobium 15% is in that (L → ε+α-Fe), phase composite is Laplace phase ε-Fe on the eutectic point of phasor
2Nb and body-centred cubic α-Fe.According to phasor, the ferro-niobium fusing point of this composition is minimum, is 1358 ℃.In view of the above, people have developed commercial low melting point ferrocolumbium, and its composition (weight percent, wt.%): Nb 15.0, and Si 7.5, and Mn 0.72, and Al 0.15, and C 0.24, and p 0.02, and S 0.01, the Fe surplus.7.5% the main solid solution of wherein adding of silicon is in α-Fe and cause this iron alloy very crisp; Generally speaking, occur Laplace in the steel and all be regarded as harmful phase mutually, be characterized in hard and crisp.These characteristics have determined this iron alloy to be easy to be crushed to little granularity.But the ferrocolumbium that the fragility of alloy causes this low content of niobium is difficult to have other purposes except the additive as the alloying element of member.
(3) summary of the invention
The object of the present invention is to provide a kind of Fe-Nb-Si alloy, this Fe-Nb-Si alloy has obdurability and good soft magnetic performance, not only can be used as the master alloy of cast alloys member, also can direct pouring become attrition resistant cutter material.
The present invention is achieved in that a kind of Fe-Nb-Si alloy, it is characterized in that by following composition with the alloy melting of weight percent proportioning, fully stir after, be cast into member, its alloying constituent (wt.%): Nb 7.0-15.0, Si 1.0-8.0, Mn＜0.15, P＜0.05, S＜0.05, Fe surplus.
Above-mentioned a kind of Fe-Nb-Si alloy, described alloying constituent (wt.%): Nb 10.0-15.0, Si3.0-5.0, Mn＜0.15, P＜0.05, S＜0.05, Fe surplus.
The present invention is based near the low-melting FeNb alloy of niobium content 15wt.%, by adding a certain amount of silicon modification is carried out in the phase composite of material.The silicon of certain content will reach the obdurability to modification of ε phase and raising matrix, avoid the polytypism phase transformation of temperature-rise period, make material have good soft magnetic performance simultaneously.In normal process of setting, be easy to segregation owing to Fe, Si, three kinds of atoms of elements amounts of Nb and radius are widely different, therefore can take to water cast from water cooled copper mould method to guarantee high speed of cooling, to a certain degree alleviate the influence of segregation to material macroscopic view homogeneity of ingredients.This material not only can be used as the additive of the alloying element of steel-making usefulness, has mechanical property preferably simultaneously, can be used as cutter material, also is a kind of soft magnetic materials with potential using value.
(4) description of drawings
The invention will be further described below in conjunction with the drawings and specific embodiments.
Fig. 1 is typical organization's characteristic pattern of Fe-Nb-Si alloy of the present invention;
Fig. 2 is the graph of a relation of content of niobium and hardness;
Fig. 3 is the graph of a relation of silicone content and hardness;
Fig. 4 is the figure of embodiment 1 tissue signature;
Fig. 5 is the figure of embodiment 2 tissue signatures;
Fig. 6 is the figure of embodiment 3 tissue signatures;
Fig. 7 is the figure of embodiment 4 tissue signatures;
Fig. 8 is the figure of embodiment 5 tissue signatures.
(5) embodiment
With the alloying constituent 1 of casting in water cooled copper mould is example, sees Table 1, and hardness mean value is HRC40, is the hardness of quenched and tempered steel with good comprehensive mechanical performance.The phase composite of material is α-Fe and ε-Fe
2The Nb phase, to be diameter be distributed in (α-Fe+ ε-Fe less than the ε phase uniform particles of the white of 10 μ m in the typical tissue signature of alloy
2Nb) on the eutectic, referring to Fig. 1, this tissue signature has determined this alloy material to have good abrasion resistance; Simultaneously and since α-Fe matrix solid solution the Si of high level, thereby have good soft magnetic performance again.Before 1000 ℃, alloy does not have phase transformation to be taken place, and has avoided being unsuitable for situation in some applications because of volumetric shrinkage that phase transformation causes, heat effect etc.The composition characteristic of this alloy composition phase sees Table 2, as can be seen, on the lattice dot matrix of ε phase, Si subrogates Nb, has occupied the position of 1/3 Nb, and promptly the ε phase consists of Fe
6(Nb
2Si
1), the adding of Si has reached the purpose of this composition being carried out mutually modification.
When the content of Nb in the alloy and Si in greater than technical scheme during given scope, as the composition in the table 12.Alloy rigidity is HRC55, the increase of niobium, silicone content in the alloy and to cause the raising of hardness be very tangible, and the fragility of alloy is also very high, and material property degenerates.
The alloying constituent of table 1 melting (wt.%)
| Nb | Si | Mn | P | S | Fe | |
| Composition 1 | 11.6 | 3.7 | 0.05 | 0.03 | 0.02 | Surplus |
| Composition 2 | 16.0 | 8.2 | 0.16 | 0.03 | 0.04 | Surplus |
The composition of table 2 alloy phase (at.%)
Referring to Fig. 2, when the content of Nb hanged down, alloy was hypoeutectic structure, and its hardness reduces with the reduction of content of niobium, but the toughness of alloy and plasticity are better.Yet owing to there is not hard ε phase particle, the wear resistance of alloy is relatively poor.
Referring to Fig. 3, when the content of silicon hanged down, the alloy structure changing features was little, and still, hardness also is the trend of reduction with the reduction of silicone content.Because Si content is one of important feature of alloy magnetic property, so the soft magnetic performance of material also can change to some extent along with the variation of silicone content.
Embodiment
Following examples all adopt the method for water cooled copper mould casting to realize.Can use pure Nb, Si, the Fe melting of preparing burden; For reducing cost, also spendable raw material is that content of niobium is that ferro-niobium and the silicone content of 63wt.% is the 75wt.% ferrosilicon, pure iron batching melting with 99.9wt.%, re-use xrf analysis or carry out direct reading spectrometry, determine the accurate composition of alloy after the melting, what use as table 3 embodiment all is a kind of raw material in back, and table 4 is the composition (at.%) of the alloy phase of embodiment.
Table 3 embodiment-alloying constituent (wt.%)
| Nb | Si | Mn | P | S | Fe | |
| Embodiment 1 | 13.9 | 4.3 | 0.14 | 0.04 | 0.018 | Surplus |
| Embodiment 2 | 10.7 | 4.2 | 0.13 | 0.03 | 0.015 | Surplus |
| Embodiment 3 | 11.6 | 3.7 | 0.12 | 0.03 | 0.016 | Surplus |
| Embodiment 4 | 8.5 | 4.4 | 0.13 | 0.03 | 0.018 | Surplus |
| Embodiment 5 | 13.7 | 2.1 | 0.12 | 0.03 | 0.019 | Surplus |
The composition of table 4 embodiment-alloy phase (at.%)
Embodiment 1:
Be organized as the ε uniform particles and be distributed in α-Fe+ ε-Fe
2On the Nb eutectic, referring to Fig. 4.ε mutually in, Si has occupied the position of 1/3 Nb.
Embodiment 2:
Be organized as the ε uniform particles and be distributed in α-Fe+ ε-Fe
2On the Nb eutectic, referring to Fig. 5.ε mutually in, Si has occupied the position of about 1/3 Nb.
Embodiment 3:
Be organized as the ε uniform particles and be distributed in α-Fe+ ε-Fe
2On the Nb eutectic, referring to Fig. 6.ε mutually in, Si has occupied the position of 1/3 Nb.
Embodiment 4:
Be organized as α-Fe and α-Fe+ ε-Fe
2The Nb eutectic is referring to Fig. 7.
Embodiment 5:
Be organized as the ε uniform particles and be distributed in α-Fe+ ε-Fe
2On the Nb eutectic, referring to Fig. 8.
Claims (2)
1. Fe-Nb-Si alloy, the starting material melting that it is characterized in that adopting iron, niobium and silicon or contain these elements, after fully stirring, be cast into member, described Fe-Nb-Si alloy composition is by weight percentage: Nb 7.0-15.0, Si 1.0-8.0, Mn＜0.15, P＜0.05, S＜0.05, the Fe surplus.
2. a kind of Fe-Nb-Si alloy according to claim 1 is characterized in that its alloying constituent is by weight percentage: Nb 10.0-15.0, Si 3.0-5.0, Mn＜0.15, P＜0.05, S＜0.05, Fe surplus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100309162A CN100447277C (en) | 2005-10-31 | 2005-10-31 | Iron-niobium-silicon alloy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100309162A CN100447277C (en) | 2005-10-31 | 2005-10-31 | Iron-niobium-silicon alloy |
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| Publication Number | Publication Date |
|---|---|
| CN1958825A CN1958825A (en) | 2007-05-09 |
| CN100447277C true CN100447277C (en) | 2008-12-31 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7043877B2 (en) * | 2018-02-21 | 2022-03-30 | Tdk株式会社 | Soft magnetic alloys and magnetic parts |
| CN114892098B (en) * | 2022-05-26 | 2023-06-02 | 中联先进钢铁材料技术有限责任公司 | Nb-Mn-Fe ternary intermediate alloy and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS562140B2 (en) * | 1974-02-12 | 1981-01-17 | ||
| CN1162652A (en) * | 1996-10-29 | 1997-10-22 | 冶金工业部钢铁研究总院 | Nanometer crystal iron-base soft magnetic alloy |
| CN1570178A (en) * | 2004-05-09 | 2005-01-26 | 何丽华 | Ferrocolumbium for steel-smelting |
-
2005
- 2005-10-31 CN CNB2005100309162A patent/CN100447277C/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS562140B2 (en) * | 1974-02-12 | 1981-01-17 | ||
| CN1162652A (en) * | 1996-10-29 | 1997-10-22 | 冶金工业部钢铁研究总院 | Nanometer crystal iron-base soft magnetic alloy |
| CN1570178A (en) * | 2004-05-09 | 2005-01-26 | 何丽华 | Ferrocolumbium for steel-smelting |
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|---|---|
| CN1958825A (en) | 2007-05-09 |
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