CN103898366A - Zirconium-based alloy for nuclear reactor fuel assembly - Google Patents
Zirconium-based alloy for nuclear reactor fuel assembly Download PDFInfo
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Abstract
The invention specifically relates to a zirconium-based alloy for a nuclear reactor fuel assembly, belonging to the technical field of special alloy materials. The zirconium-based alloy comprises, by weight, 0.10 to 0.40% of Sn, 1.10 to 1.40% of Nb, 0.10 to 0.30% of Fe, at least one selected from the group consisting of 0.01 to 0.20% of Cr and 0.01 to 0.20% of V, 0.002 to 0.1% of Cu, Sb, Bi or Ge, 0.06 to 0.15% of O, less than 0.008% of C, less than 0.006% of N, with the balance being zirconium. According to the invention, on the basis of a Zr-Sn-Nb alloy, other components used for improving alloy performance are added and proper component contents are selected, so the corrosion resistance, mechanical properties and radiation resistance of the alloy are improved. An alloy material prepared from such prototype alloy has improved homogeneous corrosion resistance in pure water out of a reactor, especially in an aqueous lithium hydroxide solution. According to test results in detailed description of the invention, it is considered that the zirconium-based alloy has more excellent homogeneous corrosion resistance, high creep resistance and fatigue resistance and anti-irradiation growth performance when used in a reactor.
Description
Technical field
The invention belongs to special alloy material technology field, be specifically related to a kind of zirconium base alloy for power producer fuel assembly.
Background technology
Zirconium alloy is widely used as power producer fuel element can and other in-pile components owing to having low, the good advantage such as corrosion resistance and mechanical property in neutron-absorption cross-section.In the evolution of pressurized water reactor, fuel design, to reactor core structure parts, as fuel element can, screen work, guide pipe etc., has proposed very high requirement, and early stage, these parts are made up of Zr-4 alloy conventionally.The design of high fuel burnup, require to extend the residence time and the raising coolant temperature of these parts in heap, thereby make zirconium alloy parts be faced with more harsh corrosive environment, these high requests have promoted the research of the corrosion resistance nature that improves Zr-4 alloy, have promoted the exploitation of the novel zirconium alloy to having better corrosion resistance nature.
The high request that development proposes fuel sheath for Nuclear Power Technology, has launched the research of novel zirconium alloy in the world.As in the tenth zirconium alloy international symposium, GEORGE P. SABOL has reported " the in-pile corrosion behavior of ZIRLO and Zr-4 alloy " (" In-Reactor Corrosion Performance of ZIRLO and Zircaloy-4 ", Zirconium in the Nuclear Industry:Tenth International Symposium, ASTM STP1245, A.M.Garde and E.R.Bradley, Eds., American Society for Testing and Materials, Philadelphia, 1994, pp.724-744), show that ZIRLO has corrosion resistance nature in better heap than Zircaloy-4.Muscovite Nikulina in the 11 zirconium alloy international symposium, A.V. reported " as the E635 zirconium alloy of VVER and RBMK reactor fuel rod involucrum and component materials " (" Zirconium Alloy E635as a Material for Fuel Rod Cladding and Other Components of VVER and RBMK Cores ", Zirconium in the Nuclear Industry:Eleventh International Symposium, ASTM STP1295, E.R.Bradley and G. P. Sabol, Eds., American Society for Testing and Materials, Philadelphia, 1996, pp.785-804), the composition of having announced E635 is Zr-1.0～1.4wt%Nb-0.9～1.1wt%Sn-0.3～0.5wt%Fe, the out-of-pile performances of this alloy is better than Zircaloy-4 and E110 alloy.In the 12 zirconium alloy international symposium, the Jean-Paul Mardon of France has reported " impact on M5 alloy Cladding materials of composition and manufacturing process " (" Influence of Composition and Fabrication Process on Out-of-Pile and In-Pile Properties of M5Alloy, Zirconium in the Nuclear Industry:Twelfth International Symposium, ASTM STP1354, Sabol, G, P, Moan, G.D., Eds., American Society forTesting and Materials, West Conshohocken, 2000, pp.505 ~ 524), announce the M5 alloy (Zr-1Nb-O) that under high burnup (> 65GWd) corrosion resistance nature is better than Zircaloy-4.In the 16 zirconium alloy international symposium, the A.M.Garde of the U.S. has reported " pressurized-water reactor Advanced Zirconium Alloys " (" Advanced Zirconium Alloy for PWR Application; Zirconium in the Nuclear Industry:sixteenth International Symposium; ASTM STP1529; 2010; pp.784 ~ 826), has announced the X5A alloy (Zr-0.5Sn-0.3Nb-0.35Fe-0.25Cr) that Cladding materials is better than ZIRLO alloy.
There are some researches show, in existing zirconium alloy, the proportioning of composition might not be in optimized scope, after the Sn content in ZIRLO alloy is reduced, its corrosion resistance nature further improves (Yueh, H.K., Kesterson, R.L., Comstock, R.J., et al., Improved ZIRLOTM cladding performance through chemistry and process modifications.Zirconium in the Nuclear Industry:Fourteenth International Symposium, ASTM STP1467,2004, pp.330-346.); In Zr-Nb alloy, add micro-Cu(0.05wt%) after form HANA-6 alloy also there is very good corrosion resistance nature (Park J.Y., Choi, B.K., Yoo, S.J.Jeong Y. H., Corrosion behavior and oxide properties of Zr – 1.1wt%Nb – 0.05wt%Cu alloy, J.Nucl.Mater., 359 (2006) 59 – 68.); In heap, in operational process, there is the unusual phenomenon such as fuel stick or fuel assembly bending and anti-irradiation growth poor performance in M5 alloy, therefore France has added a small amount of Sn and Fe on M5 alloying constituent basis, in mechanical property, the especially creep and the irradiation growth performance that keep significantly having improved on alloy excellent corrosion resistance basis alloy.Therefore, optimized alloy composition proportion or add other alloying element and also can develop the better zirconium alloy of corrosion resistance nature, the needs that improve constantly to meet burnup on the basis of existing zirconium alloy.
The main uniform corrosion problem of considering zirconium alloy in pressurized-water reactor, it has been generally acknowledged that in 360 ℃ of aqueous solution of out-pile and 400 ℃ of steam zircaloy corrosion experimental examination qualified can be used for pressurized-water reactor, 360 ℃ of out-piles containing qualified being more suitable in the high lithium concentration operating mode of pressurized-water reactor of experimental examination in the lithium aqueous solution.
Summary of the invention
The technical problem to be solved in the present invention is to provide the zirconium base alloy for fuel assembly for nuclear reactor a kind of novelty, that have good corrosion resistance.
In order to realize this purpose, the technical scheme that the present invention takes is:
A kind of zirconium base alloy for power producer fuel assembly, percentage composition meter by weight, formed by following ingredients: Sn:0.10-0.40, Nb:1.10-1.40, Fe:0.10-0.30, at least one in two kinds of elements of Cr:0.01-0.20 or V:0.01-0.20, O:0.06-0.15, C: be less than 0.008, N: be less than 0.006, surplus is zirconium.
A kind of zirconium base alloy for power producer fuel assembly, percentage composition meter by weight, formed by following ingredients: Sn:0.10-0.40, Nb:1.10-1.40, Fe:0.10-0.30, Cr:0.01-0.20, V:0.01-0.20, O:0.06-0.15, C: be less than 0.008, N: be less than 0.006, surplus is zirconium.
A kind of zirconium base alloy for power producer fuel assembly, percentage composition meter by weight, formed by following ingredients: Sn:0.10-0.40, Nb:1.10-1.40, Fe:0.10-0.30, at least one in two kinds of elements of Cr:0.01-0.20 or V:0.01-0.20, Cu or Sb or Bi or Ge:0.002-0.1, O:0.06-0.15, C: be less than 0.008, N: be less than 0.006, surplus is zirconium.
A kind of zirconium base alloy for power producer fuel assembly, percentage composition meter by weight, formed by following ingredients: Sn:0.10-0.25, Nb:1.10-1.40, Fe:0.10-0.30, at least one in two kinds of elements of Cr:0.01-0.20 or V:0.01-0.20, Cu or Sb or Bi or Ge:0.002-0.1, O:0.06-0.15, C: be less than 0.008, N: be less than 0.006, surplus is zirconium and impurity.
A kind of zirconium base alloy for power producer fuel assembly, percentage composition meter by weight, formed by following ingredients: Sn:0.10-0.25, Nb:1.20-1.40, Fe:0.10-0.20, at least one in two kinds of elements of Cr:0.01-0.20 or V:0.01-0.20, Cu or Sb or Bi or Ge:0.002-0.1, O:0.06-0.15, C: be less than 0.008, N: be less than 0.006, surplus is zirconium and impurity.
A kind of zirconium base alloy for power producer fuel assembly, percentage composition meter by weight, formed by following ingredients: Sn:0.10-0.20, Nb:1.20-1.30, Fe:0.10-0.20, at least one in two kinds of elements of Cr:0.01-0.10 or V:0.01-0.10, Cu or Sb or Bi or Ge:0.002-0.1, O:0.06-0.15, C: be less than 0.008, N: be less than 0.006, surplus is zirconium and impurity.
A kind of zirconium base alloy for power producer fuel assembly, percentage composition meter by weight, formed by following ingredients: Sn:0.10-0.20, Nb:1.20-1.30, Fe:0.10-0.20, at least one in two kinds of elements of Cr:0.01-0.10 or V:0.01-0.10, Cu or Sb or Bi or Ge:0.01-0.1, O:0.06-0.15, C: be less than 0.008, N: be less than 0.006, surplus is zirconium and impurity.
For a zirconium base alloy for power producer fuel assembly, percentage composition meter by weight, is made up of following ingredients: Sn:0.20, Nb:1.30, Fe:0.10, Cr or V:0.05, Cu or Sb or Bi or Ge:0.05, O:0.12, C: be less than 0.008, N: be less than 0.006, surplus is zirconium.
For a zirconium base alloy for power producer fuel assembly, percentage composition meter by weight, is made up of following ingredients: Sn:0.25, Nb:1.20, Fe:0.15, V:0.05, Cu or Sb or Bi or Ge:0.05, O:0.10, C: be less than 0.008, N: be less than 0.006, surplus is zirconium.
The preparation method of a kind of zirconium base alloy for power producer fuel assembly as above, comprises the following steps:
(1) the various components in zirconium alloy are prepared burden according to the formula ratio of alloy compositions;
(2) in vacuum consumable electrode arc furnace, carry out melting, make alloy cast ingot;
(3) alloy cast ingot is forged into the base material of desired shape at the β of 950 ° of C-1080 ° of C phase region;
(4) by base material in the β of 1000 ° of C-1100 ° of C phase region homogeneous heating, and carry out quench treatment;
(5) the base material after quenching is carried out to hot-work in the alpha phase zone of 600 ° of C-650 ° of C;
(6) the base material after hot-work is carried out to cold working, and carry out process annealing at 550 ° of C-620 ° of C;
(7) in 460 ° of C-600 ° of C, carry out stress relieving or recrystallization annealing processing, obtain described Zirconium alloy material.
The present invention is on Zr-Sn-Nb alloy basis, other are added for improving the composition of alloy property, and select suitable component concentration, especially for the addition control of the elements such as Sn, Nb, Fe, Cr or V and Cu or Bi, both improved the corrosion resistance nature of alloy, improved again mechanical property and the anti-radiation performance of alloy, alloy property provided by the invention, meets the requirement of pressurized water reactor high burnup to core structural material.The alloy material of being prepared by this prototype alloy has improved in the particularly resistance to uniform corrosion performance in lithium hydroxide aqueous solution of out-pile pure water.By the test detected result in embodiment, can think these alloys in reactor, use there is better resistance to uniform corrosion performance, higher creep resistance and fatigue characteristic, anti-irradiation growth performance.
Embodiment
Below by embodiment, the present invention is described in more detail.
To the Zirconium alloy material for nuclear reactor, the corrosion resistance nature of alloy is the factor of overriding concern, when production cost and workability are selected alloying element on this basis, to consider, therefore, need to study the impact of each alloying element on erosion resistance, mechanical property and creep behaviour and the amount ranges of alloy system and every kind of alloying element in great detail.Zirconium base alloy of the present invention, has better resistance to all even Nodular Corrosions, has higher creep resistance and fatigue characteristic, has anti-irradiation growth performance, and particular case is as follows:
(1) zirconium (Zr)
By the consideration to neutron absorption factor, the present invention selects zirconium as fundamental element, also considers the neutron-absorbing situation of adding other alloying elements in basic zirconium to simultaneously.
(2) tin (Sn)
Tin can stabilised zirconia α-phase, can increase its intensity, and can offset the deleterious effect of nitrogen to corrosion.In the time that tin consumption is few, can not reach required effect.In the present invention, Sn adds content in 0.10-0.40 % by weight, and it can guarantee that alloy has good corrosion resistance nature and good mechanical property.
(3) niobium (Nb)
Niobium can stabilised zirconia β-phase, niobium has higher strengthening effect to zirconium.Niobium consumption is crossed multipair thermal treatment sensitivity.In the present invention, Nb adds content in 1.10-1.40 % by weight, and it can guarantee that alloy has good corrosion resistance nature and good mechanical property in pure water and lithium hydroxide aqueous solution.
(4) iron (Fe)
Iron can improve alloy corrosion resistance and mechanical property, but the consumption of iron is too much or very fewly all can have an adverse influence.The content that in the present invention, Fe adds is in 0.10-0.30 % by weight, and it can guarantee that alloy has good corrosion resistance nature in pure water and lithium hydroxide aqueous solution.
(5) chromium (Cr) or vanadium (V)
Chromium can improve alloy corrosion resistance and mechanical property, but consumption too much has adverse influence.The chromium content adding in the present invention is controlled at 0.01-0.20 % by weight, and it can guarantee that alloy has good corrosion resistance nature in pure water and lithium hydroxide aqueous solution.
(6) vanadium (V)
Vanadium can improve alloy corrosion resistance and mechanical property, but consumption too much has adverse influence.The content of vanadium adding in the present invention is controlled at 0.01-0.20 % by weight, and it can guarantee that alloy has good corrosion resistance nature in pure water and lithium hydroxide aqueous solution.
(7) copper (Cu)
Copper can improve alloy corrosion resistance performance, but consumption too much has adverse influence.The copper content adding in the present invention is less than 0.1 % by weight, and it can guarantee that alloy has good corrosion resistance nature in pure water and lithium hydroxide aqueous solution.
(8) antimony (Sb)
Antimony can improve alloy corrosion resistance performance, but consumption too much has adverse influence.The antimony content adding in the present invention is less than 0.1 % by weight, and it can guarantee that alloy has good corrosion resistance nature in pure water and lithium hydroxide aqueous solution.
(9) germanium (Ge)
Germanium can improve alloy corrosion resistance performance, but consumption too much has adverse influence.The ge content adding in the present invention is less than 0.1 % by weight, and it can guarantee that alloy has good corrosion resistance nature in pure water and lithium hydroxide aqueous solution.
(10) bismuth (Bi)
Bismuth all can improve alloy corrosion resistance performance, but consumption too much has adverse influence.The bi content adding in the present invention is less than 0.1 % by weight, and it can guarantee that alloy has good corrosion resistance nature in pure water and lithium hydroxide aqueous solution.
(11) oxygen (O)
Oxygen can stabilised zirconia α-phase, in alloy, add oxygen and can improve yield strength.The content that in the present invention, oxygen adds is in 0.06-0.15 % by weight, and it can guarantee that alloy has enough mechanical propertys and creep-resistant property.The increase of oxygen level, greatly reduces the control difficulty in material processing.
(12) carbon (C)
When carbon in alloy exists as inevitable impurity element and content is higher, low-alloyed corrosion resistance can fall.In the present invention, the weight percent of C is less than 0.008%, and it can guarantee that alloy has good corrosion resistance nature in high temperature water and steam.
(13) nitrogen (N)
When nitrogen in alloy exists as inevitable impurity element and content is higher, low-alloyed corrosion resistance can fall.In the present invention, the weight percent of N is less than 0.006%, and it can guarantee that alloy has good corrosion resistance nature in high temperature water and steam.
A kind of zirconium base alloy for power producer fuel assembly, percentage composition meter by weight, formed by following ingredients: Sn:0.10-0.40, Nb:1.10-1.40, Fe:0.10-0.30, at least one in two kinds of elements of Cr:0.01-0.20 or V:0.01-0.20, O:0.06-0.15, C: be less than 0.008, N: be less than 0.006, surplus is zirconium.
A kind of zirconium base alloy for power producer fuel assembly, percentage composition meter by weight, formed by following ingredients: Sn:0.10-0.40, Nb:1.10-1.40, Fe:0.10-0.30, Cr:0.01-0.20, V:0.01-0.20, O:0.06-0.15, C: be less than 0.008, N: be less than 0.006, surplus is zirconium.
A kind of zirconium base alloy for power producer fuel assembly, percentage composition meter by weight, formed by following ingredients: Sn:0.10-0.40, Nb:1.10-1.40, Fe:0.10-0.30, at least one in two kinds of elements of Cr:0.01-0.20 or V:0.01-0.20, Cu or Sb or Bi or Ge:0.002-0.1, O:0.06-0.15, C: be less than 0.008, N: be less than 0.006, surplus is zirconium.
A kind of zirconium base alloy for power producer fuel assembly, percentage composition meter by weight, formed by following ingredients: Sn:0.10-0.25, Nb:1.10-1.40, Fe:0.10-0.30, at least one in two kinds of elements of Cr:0.01-0.20 or V:0.01-0.20, Cu or Sb or Bi or Ge:0.002-0.1, O:0.06-0.15, C: be less than 0.008, N: be less than 0.006, surplus is zirconium and impurity.
A kind of zirconium base alloy for power producer fuel assembly, percentage composition meter by weight, formed by following ingredients: Sn:0.10-0.25, Nb:1.20-1.40, Fe:0.10-0.20, at least one in two kinds of elements of Cr:0.01-0.20 or V:0.01-0.20, Cu or Sb or Bi or Ge:0.002-0.1, O:0.06-0.15, C: be less than 0.008, N: be less than 0.006, surplus is zirconium and impurity.
A kind of zirconium base alloy for power producer fuel assembly, percentage composition meter by weight, formed by following ingredients: Sn:0.10-0.20, Nb:1.20-1.30, Fe:0.10-0.20, at least one in two kinds of elements of Cr:0.01-0.10 or V:0.01-0.10, Cu or Sb or Bi or Ge:0.002-0.1, O:0.06-0.15, C: be less than 0.008, N: be less than 0.006, surplus is zirconium and impurity.
A kind of zirconium base alloy for power producer fuel assembly, percentage composition meter by weight, formed by following ingredients: Sn:0.10-0.20, Nb:1.20-1.30, Fe:0.10-0.20, at least one in two kinds of elements of Cr:0.01-0.10 or V:0.01-0.10, Cu or Sb or Bi or Ge:0.01-0.1, O:0.06-0.15, C: be less than 0.008, N: be less than 0.006, surplus is zirconium and impurity.
For a zirconium base alloy for power producer fuel assembly, percentage composition meter by weight, is made up of following ingredients: Sn:0.20, Nb:1.30, Fe:0.10, Cr:0.05, Cu or Sb or Bi or Ge:0.05, O:0.12, C: be less than 0.008, N: be less than 0.006, surplus is zirconium.
For a zirconium base alloy for power producer fuel assembly, percentage composition meter by weight, is made up of following ingredients: Sn:0.25, Nb:1.20, Fe:0.15, V:0.05, Cu or Sb or Bi or Ge:0.05, O:0.10, C: be less than 0.008, N: be less than 0.006, surplus is zirconium.
Table 1 is the composition of alloy provided by the present invention, and in table, 17* and 18* are respectively Zr-4 alloy and N36 alloy composition and corresponding experimental examination result, and in table 1, each content is the weight percent of respective components in alloy.
Table 1 alloy composition provided by the present invention
The preparation method of a kind of zirconium base alloy for power producer fuel assembly as above, comprises the following steps:
(1) the various components in zirconium alloy are prepared burden according to the formula ratio of alloy compositions;
(2) in vacuum consumable electrode arc furnace, carry out melting, make alloy cast ingot;
(3) alloy cast ingot is forged into the base material of desired shape at the β of 950 ° of C-1080 ° of C phase region;
(4) by base material in the β of 1000 ° of C-1100 ° of C phase region homogeneous heating, and carry out quench treatment;
(5) the base material after quenching is carried out to hot-work in the alpha phase zone of 600 ° of C-650 ° of C;
(6) the base material after hot-work is carried out to cold working, and carry out process annealing at 550 ° of C-620 ° of C;
(7) in 460 ° of C-600 ° of C, carry out stress relieving or recrystallization annealing processing, obtain described Zirconium alloy material.
The material of preparing by above-mentioned complete processing, by waiting α-Zr crystal grain of axle and the microtexture that equally distributed tiny second phase particles forms, can guarantee in the environment of reactor core harshness, to have good use properties.The alloy material of preparing by aforesaid method, its performance test results is as shown in table 2, table 3, table 4 and table 5.Test conditions described in table 2 is specially: etching condition is 360 ° of C, 18.6MPa deionized water; Test conditions described in table 3 is: 360 ° of C, 18.6MPa are containing the 70 μ g/g lithium aqueous solution (joining in deionized water with lithium hydroxide form); Table 4 and table 5 respectively described test conditions are 400 ° of C, 10.3MPa deionized water steam and 500 ° of C, 10.3MPa deionized water steam.Etching time in 360 ° of C water and 400 ° of C steam ambient is respectively 300 days (d).In table, provide the erosion rate (mg/dm of every kind of alloy
2/ d), for the ease of comparing the relative performance of alloy, and in table, provide relative erosion rate.Can find out in (2,3,4) from table, all alloys are at 360 ° of C pure water, lithium hydroxide aqueous solution, and have all shown good corrosion resistance nature in 400 ° of C steam.
Table 2 alloy material provided by the present invention corrodes the erosion rate after 300 days in 360 ° of C deionized waters
Table 3 alloy material provided by the present invention corrodes the erosion rate after 300 days at 360 ° of C containing in the lithium aqueous solution
Table 4 alloy material provided by the present invention corrodes the erosion rate after 300 days in water vapor
Can find out from the data of table 2, table 3 and table 4, alloy of the present invention corrosive nature in above-mentioned three kinds of corrosive mediums is all significantly better than N36 alloy, except 400 ℃ of superheated vapours, the corrosion resistance nature in other two medias is better than Zr-4 alloy, meets the requirement of power station to can material corrosive nature.
In sum, application example provided by the invention shows, alloy of the present invention all shows very good corrosion resistance nature while corrosion under above-mentioned 3 kinds of water chemistry conditions, and the erosion rate of corroding after 300 days in 360 ℃/18.6MPa deionized water and the LiOH aqueous solution is obviously better than Zr-4 alloy.N36 (Zr-1.0Sn-1.0Nb-0.3Fe) alloy that corrodes the comparable China of the erosion rate research and development after 300 days in 360 ℃/18.6MPa deionized water all reduces by 46%; The comparable N36 alloy of erosion rate corroding in the 360 ℃/18.6MPa LiOH aqueous solution 300 days reduces by 21%; The comparable N36 alloy of erosion rate corroding in 400 ℃/10.3MPa superheated vapour after 300 days reduces by 39%.
Adopted the composition range of the elements such as preferred Sn, Nb, Fe, Cr or V and Cu or Bi due to the present invention, interaction between alloying element within the scope of this, in conjunction with machining at low temperature technique, produced prior beyond thought effect, this effect is mainly manifested in two aspects: when 1) alloy of the present invention corrodes under above-mentioned 3 kinds of water chemistry conditions, all show very good corrosion resistance nature.2) alloy of the present invention has obtained the second-phase that small and dispersed distributes after low temperature process processing, has improved mechanical property (as creep and fatigue property) and the anti-irradiation growth performance of alloy.
Claims (10)
1. the zirconium base alloy for power producer fuel assembly, it is characterized in that: percentage composition meter by weight, formed by following ingredients: Sn:0.10-0.40, Nb:1.10-1.40, Fe:0.10-0.30, at least one in two kinds of elements of Cr:0.01-0.20 or V:0.01-0.20, O:0.06-0.15, C: be less than 0.008, N: be less than 0.006, surplus is zirconium.
2. a kind of zirconium base alloy for power producer fuel assembly as claimed in claim 1, it is characterized in that: percentage composition meter by weight, formed by following ingredients: Sn:0.10-0.40, Nb:1.10-1.40, Fe:0.10-0.30, Cr:0.01-0.20, V:0.01-0.20, O:0.06-0.15, C: be less than 0.008, N: be less than 0.006, surplus is zirconium.
3. the zirconium base alloy for power producer fuel assembly, it is characterized in that: percentage composition meter by weight, formed by following ingredients: Sn:0.10-0.40, Nb:1.10-1.40, Fe:0.10-0.30, at least one in two kinds of elements of Cr:0.01-0.20 or V:0.01-0.20, Cu or Sb or Bi or Ge:0.002-0.1, O:0.06-0.15, C: be less than 0.008, N: be less than 0.006, surplus is zirconium.
4. a kind of zirconium base alloy for power producer fuel assembly as claimed in claim 3, it is characterized in that: percentage composition meter by weight, formed by following ingredients: Sn:0.10-0.25, Nb:1.10-1.40, Fe:0.10-0.30, at least one in two kinds of elements of Cr:0.01-0.20 or V:0.01-0.20, Cu or Sb or Bi or Ge:0.002-0.1, O:0.06-0.15, C: be less than 0.008, N: be less than 0.006, surplus is zirconium and impurity.
5. a kind of zirconium base alloy for power producer fuel assembly as claimed in claim 4, it is characterized in that: percentage composition meter by weight, formed by following ingredients: Sn:0.10-0.25, Nb:1.20-1.40, Fe:0.10-0.20, at least one in two kinds of elements of Cr:0.01-0.20 or V:0.01-0.20, Cu or Sb or Bi or Ge:0.002-0.1, O:0.06-0.15, C: be less than 0.008, N: be less than 0.006, surplus is zirconium and impurity.
6. a kind of zirconium base alloy for power producer fuel assembly as claimed in claim 5, it is characterized in that: percentage composition meter by weight, formed by following ingredients: Sn:0.10-0.20, Nb:1.20-1.30, Fe:0.10-0.20, at least one in two kinds of elements of Cr:0.01-0.10 or V:0.01-0.10, Cu or Sb or Bi or Ge:0.002-0.1, O:0.06-0.15, C: be less than 0.008, N: be less than 0.006, surplus is zirconium and impurity.
7. a kind of zirconium base alloy for power producer fuel assembly as claimed in claim 6, it is characterized in that: percentage composition meter by weight, formed by following ingredients: Sn:0.10-0.20, Nb:1.20-1.30, Fe:0.10-0.20, at least one in two kinds of elements of Cr:0.01-0.10 or V:0.01-0.10, Cu or Sb or Bi or Ge:0.01-0.1, O:0.06-0.15, C: be less than 0.008, N: be less than 0.006, surplus is zirconium and impurity.
8. a kind of zirconium base alloy for power producer fuel assembly as claimed in claim 7, percentage composition meter by weight, formed by following ingredients: Sn:0.20, Nb:1.30, Fe:0.10, Cr:0.05, Cu or Sb or Bi or Ge:0.05, O:0.12, C: be less than 0.008, N: be less than 0.006, surplus is zirconium.
9. a kind of zirconium base alloy for power producer fuel assembly as claimed in claim 7, percentage composition meter by weight, formed by following ingredients: Sn:0.25, Nb:1.20, Fe:0.15, V:0.05, Cu or Sb or Bi or Ge:0.05, O:0.10, C: be less than 0.008, N: be less than 0.006, surplus is zirconium.
10. the preparation method of a kind of zirconium base alloy for power producer fuel assembly as described in any one claim in claim 1～9, is characterized in that, comprises the following steps:
(1) the various components in zirconium alloy are prepared burden according to the formula ratio of alloy compositions;
(2) in vacuum consumable electrode arc furnace, carry out melting, make alloy cast ingot;
(3) alloy cast ingot is forged into the base material of desired shape at the β of 950 ° of C-1080 ° of C phase region;
(4) by base material in the β of 1000 ° of C-1100 ° of C phase region homogeneous heating, and carry out quench treatment;
(5) the base material after quenching is carried out to hot-work in the alpha phase zone of 600 ° of C-650 ° of C;
(6) the base material after hot-work is carried out to cold working, and carry out process annealing at 550 ° of C-620 ° of C;
(7) in 460 ° of C-600 ° of C, carry out stress relieving or recrystallization annealing processing, obtain described Zirconium alloy material.
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