CN1080665A - The Fe-Al-Ce superalloy - Google Patents
The Fe-Al-Ce superalloy Download PDFInfo
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- CN1080665A CN1080665A CN 93110790 CN93110790A CN1080665A CN 1080665 A CN1080665 A CN 1080665A CN 93110790 CN93110790 CN 93110790 CN 93110790 A CN93110790 A CN 93110790A CN 1080665 A CN1080665 A CN 1080665A
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Abstract
The Fe-Al-Ce superalloy is a kind of novel metal structured material with excellent comprehensive performance, and it is with Fe
3Al is a base, has added micro-rare earth element ce, and has contained a small amount of Cr, Mo, Nb, Zr, elements such as B.The present invention has five kinds of prescriptions, and wherein three kinds have good room-temperature mechanical property, and two kinds then have better mechanical behavior under high temperature in addition.The present invention has improved Fe significantly owing to added rare earth element ce
3The room temperature strength of Al, especially yield strength; The compound action of Ce and other alloying element then can make alloy obtain good comprehensive mechanical properties.
Description
The present invention is a kind of new type of metal structured material.
The industrial thermal structure metallic substance that is used for more than 600 ℃ mainly is a stainless steel at present, high temperature iron is Ni-based or nickel-base alloy.No matter but be corrosion-resistant, the anti-oxidant and mechanical behavior under high temperature that alloying elements such as nickel, chromium and cobalt, niobium, tungsten and molybdenum that stainless steel or superalloy all contain suitable a large amount improve material.Because these elements cost an arm and a leg, and are higher than general steel alloy far away with the cost that causes stainless steel and superalloy, this has just limited the range of application of material greatly.In addition, in some industrial environment, the heat energy system higher as sulphur content, stainless hot corrosion resistance can't satisfy the requirement of use.
With DO
3The Fe of structure
3Al is the alloy of base, has a series of performance characteristics as high-temperature structural material and oxidation and corrosion material.As the intensity height, the Young's modulus height, proportion is little, the low corrosion resistance and good etc. that reaches of self-diffusion coefficient.Therefore since this century, material supplier author just is devoted to Fe always
3The research of Al.But to the eighties, Fe
3The Al alloy is also failed to obtain wide model as structured material and is used.This mainly is because it has two serious weakness: the one, and temperature-room type plasticity is poor, is difficult to shape to cause it; The 2nd, after temperature surpassed 600 ℃, intensity sharply descended, thereby just is difficult to use in the hot environment more than 600 ℃.
The late nineteen eighties, the C.T.liu of U.S. Oak Ridge National Laboratory, people such as C.G.Mckamey are to Fe
3Al has carried out a series of fruitful research work, and has obtained major progress on the performance improving.The Fe that is used for high-temperature structural material that September nineteen ninety, C.G.Mckamey and C.T.Liu proposed
3Al alloy patent is issued (world patent, patent No. WO90/10722), the basic composition range of the alloy of this patented invention is: Zr-(0.02-0.3 Nb-(0-0.5 Mo-(0-1.0 Cr-(0-2.0 Fe-(26-30) Al-(0.5-10))))) B(or C)-(0-0.5) V-(0-0.1) Y.This patent claims that the alloy temperature-room type plasticity of mentioned component scope can reach δ=9-10%; 600 ℃ of mechanical behavior under high temperature indexs can be compared with 316 stainless steels, and antioxidant property then is much better than 316 stainless steels.
To Fe
3The research of the application foundation of Al alloy has many reports in the literature, wherein people's such as C.G.Mckamey " A Review of Recent Developent in Fe
3Al Based on Alloys " (Aug 1991 for Journal of Materials Research, Vol.6 No.8) literary composition, the work since this century has been done the summary of system.Set forth various alloying elements in the article, comprised Cr, Mo, Nb, Ti, Si, Cu, Ni, Mn, V, B, elements such as C are to Fe
3The influence of Al room temperature and mechanical behavior under high temperature.Other document is as people's such as M.G.Mendiratta Tensile Flow and Fracture Behavior of DO
3Fe-25 At pct Al and Fe-31 At pct Al Alloys(Metall.trans.A Vol 18A 1987.2) and people's such as Mckamey The Effect of Molybodium Addition on Properties of Iron-Aluminides(Metall.trans.A Vol 120A April.1989) to Fe
3Roundup has all been made in the research of Al.
But the alloy of inventing or reporting in above-mentioned up to now patent and the various document is not widely applied to industrial yet.Its major cause is: the over-all properties of (1) material is still not ideal enough, and is poor as the alloy high-temp mechanics that room-temperature property is good in the Mckamey patent, and the good material of high-temperature behavior, its temperature-room type plasticity is not high again.And industrial used high-temperature structural material often needs excellent comprehensive performances.(2) alloy of reporting in some document has higher performance index, but these materials are in the laboratory, with the preparation of the low capacity stove of several hectograms, starting material adopt chemical pure raw material, purity height.Thereby preparation technology, chemical ingredients, microstructure be easy to control, and performance index are just than higher.When adopting commercial run to prepare to same prescription, performance does not often reach the index of bibliographical information.
The objective of the invention is at above-mentioned Fe
3The Al alloy remain problem, utilize the rare earth resources of China's abundant, a kind of high comprehensive performance is proposed, the new type high temperature structured material that cost is cheap relatively.
Chemical ingredients of the present invention is with Fe
3Al is a base, has added trace (0.001～0.5%) rare earth element ce, and has contained a small amount of Cr, Mo, Nb, Zr, elements such as B.The particular content of this invention is:
（1）Fe-（24-32）Al-（1.0-6.0）Cr-（0.001-0.5）Ce
（2）Fe-（24-32）Al-（1.0-6.0）Cr-（0.001-0.5）Ce-（0.01-0.3）（B+C）
（3）Fe-（24-32）Al-（1.0-6.0）Cr-（0.001-0.5）Ce-（0.1-3.0）Mo
（4）Fe-（24-32）Al-（1.0-6.0）Cr-（0.001-0.5）Ce-（0.1-0.3）Mo-（0.01-0.5）Zr-（0.05-0.3）（B+C）
（5）Fe-（24-32）Al-（1.0-6.0）Cr-（0.001-0.5）Ce-（0.1-1.0）Nb-（0.01-0.3）Zr-（0.01-0.3）（B+C）
The gordian technique main points of this project invention are at Fe
3Add RE elements of Ce in the Al alloy, thereby improved the performance of alloy significantly, and reduced the add-on of other element.The effect that Ce adds mainly is:
1) can increase substantially Fe
3The room temperature strength of Al, especially yield strength.
2) compound action that adds simultaneously of Ce and Cr can make Fe
3Room temperature strength and the plasticity of Al obtain matched well.
3) in microstructure, the adding of Ce can purify crystal boundary, thereby improves Fe
3The mechanical behavior under high temperature of Al.
The alloy of above-mentioned 5 kinds of composition ranges all has good comprehensive mechanical performance and antioxidant property.Concrete performance index are listed in table 1, table 2 and the table 3, and wherein composition has better room-temperature mechanical property at the alloy of (1)-(3), and the alloy of (4), (5) two composition ranges then has the ideal mechanical behavior under high temperature.
Compare with people's such as existing relevant technologies, particularly Makemay patent, the major advantage of this invention is:
1) since added in the existing relevant technologies of Ce(all do not use Elements C e) integrated performance index, the especially antioxidant property data height more listed of material than other relevant technologies.
2) total add-on of this invention interalloy element is lacked than other relevant technologies, and material cost obviously reduces like this.
Be the performance characteristics of explanation this invention alloy, listed the performance index of some alloys in each following table, and the composition of these alloys listed at first in the table 1, the composition of all these alloys is all in the alloy component range of this invention regulation.
Listed the Mechanics Performance Testing result of each alloy in the table 2.Alloy 1,2,3 has temperature-room type plasticity and intensity preferably as seen from the table.With binary alloy Fe
3Al(Fe-28Al) compare, plasticity has improved more than four times.This obviously is owing to add the effect of alloying element.Alloy 4 and 5 also has good high-temperature (600 ℃) mechanical property except having certain temperature-room type plasticity, thereby can be used for the ideal structure material of 600 ℃ of warm areas.
No matter listed the oxidation test result of 700 ℃ of several alloys and 800 ℃ in the table 3, be 700 ℃ or 800 ℃ as seen from the table, listed various Fe in the table
3The Al alloy all has good antioxidant property,, compares the Fe of listed various compositions in the table though the adding of alloying element descends the antioxidant property of material to some extent with existing relevant technologies
3The anti-oxidant of Al all is very good.
The Fe of this invention
3The Al alloy can adopt following prepared:
(1), pours into the ingot casting of different shape and size subsequently with the alloy of the induction furnace melting composition range of the present invention of atmosphere in vacuum induction furnace or the general atmosphere.
(2) ingot casting was at 1000 ℃ of homogenizing annealing 5-8 hours, and forge hot becomes the rectangle slab.
(3) with the hot rolling technology method slab is processed into the thick sheet material of 1-5mm.Work that to roll temperature be that 900-1000 ℃ of finishing temperature is 700 ℃.
(4) for improving the surface quality of sheet material, can be with the plate after the hot rolling again through one warm-rolling processing, the warm-rolling temperature is 650-700 ℃, deformation quantity＜25%.
(5) ingot casting behind homogenizing annealing also the available heat pressing method be processed into tubing or bar, extrusion temperature is 1000 ℃, extrusion ratio was less than 16: 1.
The various section bars of deformation processing need through stress relief annealing before using, and annealing process is: be heated to 650-750 ℃ of insulation 1 hour, air cooling or oil quenching.
In sum, the invention provides the structured material of the novel oxidation and corrosion of a class.The application of this class material can be divided into two aspects: the 1) corrosion resistant material used of room temperature, and its basal component scope can be taken as: Zr-(0.05-0.25 Nb-(0.1-0.2 Ce-(0.1-0.2 Cr-(0.05-0.2 Fe-(26-28) Al-(2-5))))) (B+C); 2) structured material used of high temperature, its basal component scope can be taken as: Zr-(0.05-0.15 Ce-(0.1-0.2 Nb-(0.005-0.1 Mo-(0.3-0.6 Cr-(0.5-1.5 Fe-(26-28) Al-(2-5)))))) (B+C).Owing to do not contain Ni in the novel material of this invention, it is also very low to contain the Cr amount, thereby cost is low, and its processing is uncomplicated again, and can replace with the nickel chromium triangle under many working conditionss is the superalloy of main adding elements, to obtain remarkable economic efficiency.
The chemical ingredients of several exemplary alloy of table 1 (at)
Table 2 mechanical property
* annotating 1:FA109 and FA133 all is two kinds of alloys enumerating in the Mokamey patent specification
Annotating 2:316 is the stainless steel that is widely used as high-temperature structural material at present in the world
Annotate 3: the life-span of creep rupture index of unlisted this alloy in this patent specification, but high target is 204h(FA91 creep life in listed each alloy in the patent specification)
Oxidation test result in table 3 atmospheric environment (500 h)
Claims (1)
1, Fe-Al-Ce superalloy is a kind of novel metal structured material with excellent comprehensive performance, and it is with Fe
3Al is a base, it is characterized in that wherein having added trace (0.001～0.05%) rare earth element ce, and contains a small amount of Cr, and Mo, Nb, Zr, elements such as B, it has following five kinds of prescription: a.Fe-(24～32) Al-(1.0～6.0) Cr-(0.001～0.5) Ce;
b.Fe-(24～32)Al-(1.0～6.0)Cr-(0.001～0.5)Ce-(0.01～0.3)(B+C)；
c.Fe-(24～32)Al-(1.0～6.0)Cr-(0.001～0.5)Ce-(0.1～3.0)Mo；
d.Fe-(24～32)Al-(1.0～6.0)Cr-(0.001～0.5)Ce-(0.1～3.0)Mo-(0.01～0.5)Zr-(0.05～0.3)(B+C)；
e.Fe-(24～32)Al-(1.0～6.0)Cr-(0.001～0.5)Ce-(0.1～1.0)Nb
-(0.01～0.3)Zr-(0.01～0.3)(B+C)；
Wherein a, b, c have good room-temperature mechanical property, and d, e have even more ideal mechanical behavior under high temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93110790A CN1038050C (en) | 1993-05-05 | 1993-05-05 | Fe-Al-Ce high-temp. alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93110790A CN1038050C (en) | 1993-05-05 | 1993-05-05 | Fe-Al-Ce high-temp. alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1080665A true CN1080665A (en) | 1994-01-12 |
| CN1038050C CN1038050C (en) | 1998-04-15 |
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ID=4988616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93110790A Expired - Fee Related CN1038050C (en) | 1993-05-05 | 1993-05-05 | Fe-Al-Ce high-temp. alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1038050C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103205619A (en) * | 2013-05-10 | 2013-07-17 | 东南大学 | Titanium carbide-tungsten carbide composite hard alloy |
| CN103243252A (en) * | 2013-05-10 | 2013-08-14 | 东南大学 | Binder-phase wolfram-carbide (WC) hard alloy and preparation method thereof |
| CN104233065A (en) * | 2014-08-26 | 2014-12-24 | 盐城市鑫洋电热材料有限公司 | Silicon carbide-enhanced iron/aluminum composite material and preparation method thereof |
| CN104674104A (en) * | 2013-11-29 | 2015-06-03 | 中国科学院兰州化学物理研究所 | Method for preparing iron-aluminum-based alloy material |
| CN107488816A (en) * | 2017-08-29 | 2017-12-19 | 南洋泵业（青岛）有限公司 | A kind of high-toughness high-strength composite and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02138440A (en) * | 1988-06-29 | 1990-05-28 | Nippon Steel Corp | Seawater corrosion resisting steel excellent in rust resistance |
-
1993
- 1993-05-05 CN CN93110790A patent/CN1038050C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103205619A (en) * | 2013-05-10 | 2013-07-17 | 东南大学 | Titanium carbide-tungsten carbide composite hard alloy |
| CN103243252A (en) * | 2013-05-10 | 2013-08-14 | 东南大学 | Binder-phase wolfram-carbide (WC) hard alloy and preparation method thereof |
| CN103243252B (en) * | 2013-05-10 | 2015-02-18 | 东南大学 | Binder-phase wolfram-carbide (WC) hard alloy and preparation method thereof |
| CN104674104A (en) * | 2013-11-29 | 2015-06-03 | 中国科学院兰州化学物理研究所 | Method for preparing iron-aluminum-based alloy material |
| CN104233065A (en) * | 2014-08-26 | 2014-12-24 | 盐城市鑫洋电热材料有限公司 | Silicon carbide-enhanced iron/aluminum composite material and preparation method thereof |
| CN107488816A (en) * | 2017-08-29 | 2017-12-19 | 南洋泵业（青岛）有限公司 | A kind of high-toughness high-strength composite and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1038050C (en) | 1998-04-15 |
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