CN100562596C - A kind of constant modulus alloy with wide zone and small frequency temperature coefficient - Google Patents
A kind of constant modulus alloy with wide zone and small frequency temperature coefficient Download PDFInfo
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- CN100562596C CN100562596C CNB200810113365XA CN200810113365A CN100562596C CN 100562596 C CN100562596 C CN 100562596C CN B200810113365X A CNB200810113365X A CN B200810113365XA CN 200810113365 A CN200810113365 A CN 200810113365A CN 100562596 C CN100562596 C CN 100562596C
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Abstract
The invention belongs to the alloy field, particularly a kind of constant modulus alloy with wide zone and small frequency temperature coefficient.The chemical composition of this alloy (weight %) is: Ni:43.00-49.00%, Cr:4.50-6.50%, Ti:2.00-2.70%, Al:0.30-0.70%, Co:0.50-2.00%, Mo:1.00-1.50%, Cu:0.20-0.40%, Ag:0.05-0.15%, C≤0.015%, S≤0.010%, P≤0.010%, Si≤0.70%, Mn≤0.70%, all the other are Fe.Constant modulus alloy of the present invention compared with prior art has the wide warm area of premium properties, the advantage of small frequency temperature coefficient.The temperature coefficient of the elastic modulus of alloy in-60-120 ℃ temperature range | β f|＜3 * 10
-6/ ℃, Q＞15000, room temperature E value＞180GPa.
Description
Technical field
The invention belongs to the alloy field, particularly a kind of have wide warm area (60-120 ℃) small frequency temperature coefficient (| β f|≤3 * 10
-6/ ℃) constant modulus alloy.
Background technology
The frequency-temperature coefficient of alloy material and temperature coefficient of the elastic modulus have certain corresponding relation.Wide warm area constant modulus alloy is meant at the use temperature interval than broad, the constant modulus alloy that the natural frequency of alloy remains unchanged substantially with variation of temperature.As far back as 1896, it is found that in the Fe-Ni binary alloy that Ni content is 28% and at 44% o'clock, temperature coefficient of the elastic modulus can be zero, but permanent elasticity temperature range is very narrow, temperature factor to Ni content extremely sensitivity be not applied.But after this develop the carbide reinforced type and the ageing strengthening type Fe-Ni base constant modulus alloy of practical application, generate the intermetallic compound reinforced alloys by adding alloy elements such as C, Cr, Ti, Al, Nb, the stable alloy temperature coefficient of the elastic modulus, many trades mark have been formed, as constant modulus alloys such as Ni-Span C, Ni-Span D, 3J53,3J58, have little frequency-temperature coefficient | β f|＜5 * 10
-6/ ℃, but its temperature use range is narrow, only has good perseverance bullet characteristic-40～80 ℃ of temperature ranges, can not satisfy in higher or lower temperature range and use.It is magnetism-free constant elasticity alloy that one class is arranged again, as Nb base alloy, this alloy can be used in-55-400 ℃ envrionment temperature, and possesses non-magnetic characteristics, can avoid the influence of surrounding magnetic field, but relatively higher (about 70-80 * 10 of its temperature coefficient of the elastic modulus
-6/ ℃), and plasticity is on the low side, can't satisfy specific service requirements.
At present, more widely used Fe-Ni Ai Lin tiling type constant modulus alloy, its use temperature generally is lower than 90 ℃, exceeds the use temperature scope, rapid variation can take place in the frequency-temperature coefficient of alloy, has certain limitation in the use temperature scope than broad.And the constant modulus alloy of other types, though the use temperature scope than broad, frequency-temperature coefficient is bigger comparatively speaking, often is not suitable for making accurate elasticity or frequency element.Along with development of science and technology, require resilient material not only to require to have little frequency-temperature coefficient, also require material in wideer temperature range, to work, had higher requirement in aspects such as the use temperature of perseverance bullet alloy, mechanical quality factor, frequency-temperature coefficient, intensity.
Summary of the invention
The purpose of this invention is to provide a kind of perseverance bullet characteristic alloy with wide zone and small frequency temperature coefficient.
According to above-mentioned purpose, overall technical architecture of the present invention is:
It is main component that Fe-42Ni-Cr-Ti-Al (3J58) is adopted in the composition design of alloy.The rational proportion of Ni and Fe element is the basis that alloy produces the elasticity abnormality in the development material, and they play a leading role to the perseverance bullet characteristic of alloy; Cr reduces the susceptibility of alloy temperature coefficient of the elastic modulus to composition, and the solution strengthening effect of Cr simultaneously can improve alloy mechanical property and mechanical quality factor; Ti, Al are the forming elements of dispersion-strengthened phase, and precipitated phase plays an important role to the permanent elasticity of alloy, the modulation of mechanical property.Obtain to have the constant modulus alloy that property requires, effect according to each element in the alloy, need rational allocation, the suitable content that improves Ni content, reduction Cr, Ti, Al etc. during the design alloying constituent, an amount of simultaneously interpolation Co, Mo, alloying elements such as Cu, Ag make alloy have unique over-all properties.
According to above-mentioned purpose and whole technical scheme, the concrete technical scheme of the present invention is:
The chemical composition of alloy of the present invention (weight %) is: Ni:43.00-49.00%, Cr:4.50-6.50%, Ti:2.00-2.70%, Al:0.30-0.70%, Co:0.50-2.00%, Mo:1.00-1.50%, Cu:0.20-0.40%, Ag:0.05-0.15%, C≤0.015%, S≤0.010%, P≤0.010%, Si≤0.70%, Mn≤0.70%, all the other are Fe.
The effect of above-mentioned each element and proportioning are according to as follows:
Ni: austenite former is the basis that produces permanent resilient energy, and the suitable raising of Ni content helps the increase of alloy use temperature.
Cr: reduce the susceptibility of alloy temperature coefficient of the elastic modulus to composition, the solution strengthening effect of Cr simultaneously can improve alloy mechanical property and mechanical quality factor, and suitable reduction Cr content helps the rising of alloy Curie temperature, the increase of use temperature.
Ti, Al, Ag: the forming element of dispersion-strengthened phase, precipitated phase plays an important role to the permanent elasticity of alloy, the modulation of mechanical property.Suitable reduction Ti, Al content help the rising of alloy Curie temperature, the increase of use temperature.
Co: austenite former, the interpolation of Co element can intensive increases the Curie temperature of alloy, helps the increase of alloy use temperature.
Mo, Cu: influence the precipitated phase growth rate, increase the stability of the permanent resilient energy of alloy, increase intensity, hardness and the mechanical quality factor of alloy.
C, S, P, Si, Mn: under the prerequisite that can guarantee the alloy processibility, reduce content as far as possible.
The akin preparation method of employing of the present invention and prior art:
Adopt the preparation method of alloys such as suitable complete processing and thermal treatment process.Prepare the wide zone and small frequency temperature coefficient constant modulus alloy as follows:
1, melting
Will remove gas and impurity such as C, S, P in the pure iron with the vacuum induction furnace pure iron of purifying before the molten alloy, the surface oxide layer of metal Ni and Fe will be removed through polishing.Alloy melting carries out in vacuum induction furnace, vacuum tightness≤1 * 10
-1Pa wants the strict scaling loss amount of controlling alloying element in the fusion process, control refining temperature and time, accomplish accurately to control composition, the abundant degassing, scum silica frost.
2, homogenizing is handled
Place High Temperature Furnaces Heating Apparatus to carry out long-time homogenizing annealing alloy pig and handle, the also chemical ingredients of sampling analysis alloy strips off the skin after the processing.
3, cogging, heat are pricked
Be lower than 600 ℃ of shove charges when stripping off the skin the ingot cogging, the heat-up rate speed of the size decision alloy pig of alloy pig begins to forge into square billet behind 1100-1200 ℃ of insulation appropriate time.Be rolled into pole behind 1100-180 ℃ of insulation appropriate time again.
4, solution heat treatment
The molten thermal treatment temp of pole is 900-1050 ℃, is incubated 20-60 minute, and hardening obtains the tiny single-phase austenite structure of crystal grain rapidly.Under the condition that guarantees complete solid solution, should select lower solid solubility temperature as far as possible.
5, cold drawn
The light bar is cold drawn to desired size by different cold deformation amounts.Note in the cold drawing process selecting lubricant and pass deformation, accomplish surperficial no marking.
Constant modulus alloy of the present invention compared with prior art has the wide warm area of premium properties, the advantage of small frequency temperature coefficient.The temperature coefficient of the elastic modulus of alloy in-60-120 ℃ temperature range | β f|＜3 * 10
-6/ ℃, Q＞15000, room temperature E value＞180GPa.
Description of drawings
The natural frequency of Fig. 1 alloy of the present invention and the curve relation figure between the temperature.
Embodiment
1, utilize the permanent bullet of the wide zone and small frequency temperature coefficient alloy steel ingot of 4 compositions of 25Kg vacuum induction furnace preparation as shown in table 1:
2, alloy pig is handled through 1 hour homogenizing annealing in 1100 ℃, forged into square billet in 1 hour in 1070 ℃ of insulations, square billet is rolled into pole through 1120 ℃ of insulations after 1 hour, and pole is hardening after 1000 ℃ of insulations solution treatment in 1 hour, obtains solid solution condition alloy pole.
3, solid solution attitude alloy bar material is carried out carrying out respectively after cold drawn 630 ℃, 680 ℃, 730 ℃ * 3h vacuum aging and handle, it is as shown in table 2 that the alloy after the timeliness of gained has performance:
4, with the No.1 alloy through 1030 ℃ of quench treatment, after cold working, the sample that carries out 630 ℃ of ageing treatment is heated to 150 ℃ again, is cooled to-70 ℃ then continuously, the resonant frequency f value of alloy when continuously measured therebetween reduces with temperature, its result such as Fig. 1.The near-linear relation that f (T) curve display development alloy is good.
Cooperate suitable preparation technology by optimizing alloying element, prepared wide warm area, small frequency temperature coefficient constant modulus alloy with premium properties.The temperature coefficient of the elastic modulus of alloy in-60-120 ℃ temperature range | β f|＜3 * 10
-6/ ℃, Q＞15000, room temperature E value＞180GPa.
Claims (1)
1, a kind of constant modulus alloy with wide zone and small frequency temperature coefficient is characterized in that the chemical composition (weight %) of this alloy is: Ni:43.00-49.00%, Cr:4.50-6.50%, Ti:2.00-2.70%, Al:0.30-0.70%, Co:0.50-2.00%, Mo:1.00-1.50%, Cu:0.20-0.40%, Ag:0.05-0.15%, C≤0.015%, S≤0.010%, P≤0.010%, Si≤0.70%, Mn≤0.70%, all the other are Fe.
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| CN100562596C true CN100562596C (en) | 2009-11-25 |
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| CN104195404B (en) * | 2014-09-12 | 2016-05-25 | 钢铁研究总院 | A kind of wide temperature range high strength constant modulus alloy and preparation method thereof |
| CN104328325B (en) * | 2014-09-29 | 2017-05-17 | 钢铁研究总院 | Iron-nickel-based low-delaying constant-elastic alloy used in diaphragm capsule sensor and preparation method thereof |
| CN111705255B (en) * | 2020-07-30 | 2022-02-18 | 北京北冶功能材料有限公司 | high-Q-value low-frequency temperature coefficient constant-elasticity alloy and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85100773A (en) * | 1985-04-01 | 1986-08-20 | 首都钢铁公司特殊钢公司冶金研究所 | High performance positive frequency temperature index permanent elastic alloy |
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2008
- 2008-05-29 CN CNB200810113365XA patent/CN100562596C/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85100773A (en) * | 1985-04-01 | 1986-08-20 | 首都钢铁公司特殊钢公司冶金研究所 | High performance positive frequency temperature index permanent elastic alloy |
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