CN110343912A - A kind of rare-earth heat-resistant aluminium alloy conductor material and preparation method - Google Patents
A kind of rare-earth heat-resistant aluminium alloy conductor material and preparation method Download PDFInfo
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Abstract
The present invention provides a kind of rare-earth heat-resistant aluminium alloy conductor material and preparation methods, aluminium alloy conductor material is made of the element of following weight percentage: Ce 5.00%-15.00%, Zr is 0.15%-0.70%, Y is 0.01%-0.50%, Fe is 0.01%-5.00%, Mg is 0.10%-5.00%, Si is 0.05%-8.00%, Cu is 0.001%-5.00%, Co is 0.001%-0.40%, B is 0.001%-0.85%, Ti is 0.001%-0.2%, V is 0.001%-0.15%, Cr is 0.001%-0.12%, Mn is 0.001%-0.12%, Ni is 0.001%- 0.15%, remaining is aluminium.High-strength highly-conductive heat-resisting aluminium alloy provided by the present invention has high conductivity and high-fire resistance.
Description
Technical field
The present invention relates to technical field of alloy, and in particular, to a kind of rare-earth heat-resistant aluminium alloy conductor material and preparation side
Method.
Background technique
Aluminium alloy has quality light, and specific strength is high, and electrical and thermal conductivity is good, is widely used in electric power electrician trade.With
Chinese national economy maintains sustained and rapid growth, and constantly increases the demand of electric power, transmission line of electricity to high-pressure trend, long distance ionization and
Large capacity direction is developed, while more stringent requirements are proposed to overhead power transmission conducting wire, especially takes into account high conductivity, the height of material
Intensity and high-fire resistance.Existing transmission line of electricity uses steel-cored aluminium strand, and poor heat resistance, current-carrying capacity is low, for city net, rural power grids line
For the transformation of road, if wanting to increase transmission line capability and running temperature is constant, it is necessary to newly-increased transmission line of electricity increases sectional area of wire,
This two schemes is both needed to transformation steel tower or reconstructs, and increases investment and land resource occupies, and is transformed using heat-resisting aluminium alloy
Dilatation route, improving transmission capacity under the case where replacing same cross-sectional area capacity-improving conducting wires becomes one of effective technology.It is high resistance to
The running temperature of transmission line of electricity can be improved under conditions of being changed without tower bar in hot conductor material, mentions High Output Current to protect
Demonstrate,prove the large capacity of transmission line of electricity and the safety in utilization of conducting wire.Transmission pressure with high conductivity can reduce line loss, improve
Power transmission efficiency.High-strength aluminum alloy has light weight, and arc sag performance is good, and conductive line surfaces advantage with high hardness can be used for Great span
The defeated modified line road of big load.
Currently, middle high intensity aluminum conductor generallys use Al-Mg-Si alloy conducting wire, which relies primarily on timeliness analysis
Mg out2Si hardening constituent is strengthened, however unstable under the hardening constituent high temperature, can be dissolved into alloy matrix aluminum again and lose reinforcing effect
Fruit, the conducting wire heat resistance are poor.Aluminium is improved for adding trace alloying element such as zirconium, titanium etc. in the heat-resisting aluminum conductor of transmission line of electricity
Recrystallization temperature improve the heat resistance of aluminium, but although the addition of titanium, zircaloy element ensure that heat resistance, and conducting wire intensity is not
High and conductivity has loss.Therefore in existing aluminum conductor material conductivity and heat resistance and intensity there are shifting relationship,
Developing, there is the aluminium alloy conductor of high-intensitive, high conductivity and good heat resistance, which to become urgent need to resolve in industry, asks questions.
Through retrieving, the Chinese patent of Publication No. CN108559874A discloses a kind of heat-resisting aluminium alloy of high-strength highly-conductive
The preparation method of conducting wire, heat-resistant aluminum alloy wire are improved by the lamella or netted eutectic of intercrystalline precipitation in solidified structure
Intensity, and the eutectic has high-temperature stability so ensure that the heat resistance of alloy.But the invention alloying component be eutectic or
Hypoeutectic, eutectic are precipitated in crystal boundary, and cerium solid solubility very little in aluminium can not be in transgranular generation precipitation strength phase, eutectic structure
The invigoration effect of Al-Ce eutectic precipitated phase can not be given full play to.In addition, in as cast condition solidified structure, Al-Ce eutectic precipitated phase
Lamella is coarse, which is brittlement phase, during applying load military service, the coarse easily broken generation fine fisssure of eutectic precipitated phase
Line becomes material failure formation of crack.
Found through retrieval, the Chinese patent of publication number CN106834836A, disclose a kind of aluminium alloy conductor material and its
Production technology, the aluminium alloy conductor is by following weight percent at being grouped as: Cu0.42-0.46%, Fe0.30-0.32%,
Si 0.28-0.34%, P0.19-0.23%, Ca0.18-0.20%, K0.16-0.20%, Mo0.09-0.15%, Co0.09-
0.15%, Mn0.08-0.12%, Cr0.07-0.11%, Sn0.05-0.07%, Ti0.04-0.08%, Zn0.04-0.06%,
Remaining as aluminium and inevitable impurity.It measures its tensile strength and reaches 283Mpa, conductivity can reach 62.7%IACS, resistance to
Hot performance long can work normally 2 years or more under 240 DEG C of states.The patent is precipitated in ag(e)ing process by trace alloying element
Disperse phase is to reach strengthening effect, however the proprietary alloy element is limited to alloy strength enhancing for micro addition, and Cu,
Fe, Si are reacted with Al matrix to form that intermetallic compound heat resistance is general, the heat resistance Shortcomings of alloy.
Summary of the invention
For the defects in the prior art, a kind of rare-earth heat-resistant aluminium alloy conductor material and preparation method are provided.
According to the first aspect of the invention, a kind of rare-earth heat-resistant aluminium alloy conductor material, the aluminium alloy conductor are provided
Material is made of the element of following weight percentage: Ce 5.00%-15.00%, Zr 0.15%-0.70%, Y are
0.01%-0.50%, Fe 0.01%-5.00%, Mg 0.10%-5.00%, Si 0.05%-8.00%, Cu are
0.001%-5.00%, Co 0.001%-0.40%, B 0.001%-0.85%, Ti 0.001%-0.20%, V are
0.001%-0.15%, Cr 0.001%-0.12%, Mn 0.001%-0.12%, Ni 0.001%-0.15%, other
Impurity content≤0.10%, remaining is aluminium.
Preferably, the aluminium alloy conductor material is made of the element of following weight percentage: the aluminium alloy conductor
Material is made of the element of following weight percentage: Ce 10.00%-12.00%, Zr 0.15%-0.30%, Y are
0.02%-0.30%, Fe 0.30%-3.00%, Mg 0.20%-3.00%, Si 0.20%-4.00%, Cu are
0.30%-3.00%, Co 0.10%-0.20%, B 0.05%-0.50%, Ti 0.05%-0.10%, V 0.04%-
0.10%, Cr 0.05%-0.08%, Mn 0.03%-0.06%, Ni 0.02%-0.08%, remaining is aluminium.
Further, the tensile strength of the aluminium alloy conductor material reaches 300-350MPa.
Further, the conductivity of the aluminium alloy conductor material is greater than 59%.
The second aspect according to the present invention provides a kind of preparation method of rare-earth heat-resistant aluminium alloy conductor material, comprising:
Aluminium ingot is subjected to melting in a furnace, the aluminium ingot is fused into aluminum melt；
The raw material of alloying component needed for preparing the aluminium alloy is added, in the aluminum melt by adjusting in the raw material
Each alloy addition level makes alloying component reach default ingredient；
The aluminum melt after each alloying element of addition is sufficiently stirred, melts it to each alloying element
Afterwards, degasification, slagging-off are carried out, aluminium alloy melt is obtained, the aluminium alloy melt is entered into continuous casting and rolling production line, is processed into aluminium conjunction
Golden pole stock；
The Aluminum alloy pole material is heat-treated, the Aluminum alloy pole material after Overheating Treatment is subjected to wire drawing, is twisted
Line is produced into rare-earth heat-resistant aluminium alloy conductor material.
Preferably, described that aluminium ingot is carried out melting in a furnace, the temperature of the obtained aluminum melt is heated to 720-750
℃。
Preferably, the aluminium alloy melt is entered into continuous casting and rolling production line, is processed into Aluminum alloy pole material, comprising: will removed
The aluminium alloy melt obtained after gas, slagging-off enters continuous casting and rolling production line at 750-800 DEG C and carries out slab, by the slab
The hot rolling on milling train is 500-530 DEG C into temperature is rolled, obtains the Aluminum alloy pole material.
Preferably, the Aluminum alloy pole material is heat-treated, in which: heat treatment temperature is 350-500 DEG C, and the time is
15-50 hours.
Preferably, the aluminium ingot purity is 99.7% or more.
Compared with prior art, the present invention have it is following at least one the utility model has the advantages that
1, in the above-mentioned rare-earth heat-resistant aluminium alloy conductor of the present invention, cerium is main intensified element in aluminium alloy, in the present invention cerium
Eutectic reaction occurs with aluminium element and forms Al11Ce3Intermetallic compound, this kind of intermetallic compound thermal stability is good, eutectic phase
It is precipitated in crystal boundary, plays a part of to strengthen crystal boundary, effectively enhance the intensity and heat resistance of aluminium alloy；Zirconium in alloying element, yttrium,
Copper, cobalt, vanadium, chromium, nickel play the role of alloying matrix and improve reinforcement morphology, and multiple element synergistic effect passes through adjusting
Each element content, is aided with heat treatment process, in transgranular precipitation Al3(Zr,RE)、Al2Cu、AlCox、Al(V,RE)、Al3Ni etc. is more
Dephasing, plays the transgranular dislocation strengthening of pinning, and above-mentioned precipitated phase high-temperature stable hinders the shifting of crystal boundary and dislocation at high temperature
It is dynamic, recrystallization temperature is improved, the intensity and heat resistance of aluminium alloy are enhanced；The members such as iron, magnesium, silicon, boron, titanium, chromium, manganese in alloying element
Element refines intermetallic compound reinforced phase lamella or refinement crystal grain in process of setting, plays a part of to regulate and control Solidification Structures.
Different from only leaning on a kind of thinking of mode reinforced aluminium alloy conducting wire in the prior art, the present invention is with transgranular diffusion-precipitation phase, crystal boundary
The mentality of designing that eutectic phase strengthens matrix is precipitated, alloying improves crystal boundary and eutectic and grain form is precipitated, and deformation improves enhancing
The distribution of phase and the means of form.
2, the above-mentioned rare-earth heat-resistant aluminium alloy conductor of the present invention has high conductivity and high-fire resistance, and tensile strength is up to 300-
350MPa；Conductivity is greater than 59%, is higher than IEC standard high strength heat resistant alloy conducting wire intensity 250MPa, conductivity 55%.In short term
280 DEG C of heat resistance after heating 1 hour, intensity does not drop anti-slightly elevated, and 400 DEG C are heated 1 hour, and intensity is basically unchanged, and plasticity is big
It is big to improve.
3, the present invention in aluminium alloy conductor material aluminium alloy element composition in zirconium, yttrium, iron, magnesium, silicon, copper, cobalt, boron, titanium,
Vanadium, chromium, manganese, nickel element play the role of alloying base aluminum, and Al is precipitated in the heat treatment process by above-mentioned preparation method3
Intermetallic compounds such as (Zr, RE), the compound is stable at high temperature, while effectively enhancing intensity of aluminum alloy and heat resistance,
Influence of the solid solution element to aluminium alloy conductor conductivity is reduced, the conductivity of aluminium alloy conductor is improved.
4, in the above-mentioned preparation method of the present invention, further using machining deformations such as rolling or drawings, improve Al11Ce3Metal
Between compound enhance phase morphology, the Al in deformation process11Ce3Lamella is thinning or lamella is broken, and intermetallic compound scale becomes
It is small, it is gradually uniformly dispersed, is heat-treated after deformation in the base, intensity, heat resistance and the conductivity enabled aluminum alloy to significantly improves.According to
By the means such as alloying and machining deformation, thinning solidification structure improves alloy strengthening phases form and distribution, improve the strength of materials,
The performances such as plasticity, conductivity.
5, the used cost of material of aluminium alloy conductor material is cheap in the present invention, environmentally friendly, dosage maximum Ce elements
The rich reserves in rare earth element, it is cheap.
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection scope.
Embodiment 1
The present embodiment provides a kind of rare-earth heat-resistant aluminium alloy conductor material, aluminium alloy conductor material is contained by following weight percent
The element of amount forms: Ce 15.00%, Zr 0.70%, Y 0.50%, Fe 5.00%, Mg 5.00%, Si are
8.00%, Cu 5.00%, Co 0.40%, B 0.85%, Ti 0.20%, V 0.15%, Cr 0.12%, Mn are
0.12%, Ni 0.15%, other impurities constituent content≤0.10%, remaining is aluminium.
In the present embodiment rare-earth heat-resistant aluminium alloy conductor material, cerium is main intensified element in aluminium alloy, and cerium and aluminium element are sent out
Raw eutectic reaction forms Al11Ce3Intermetallic compound, this kind of intermetallic compound thermal stability is good, and eutectic phase is precipitated in crystal boundary,
Play a part of to strengthen crystal boundary, effectively enhances the intensity and heat resistance of aluminium alloy；Zirconium, yttrium, copper, cobalt, vanadium, chromium, nickel play alloy
Change matrix and improve the effect of reinforcement morphology, multiple element synergistic effect is aided with heat treatment work by adjusting each element content
Skill, in transgranular precipitation Al3(Zr,RE)、Al2Cu、AlCox、Al(V,RE)、Al3The disperse phases such as Ni play the transgranular dislocation strengthening of pinning
Effect, above-mentioned precipitated phase high-temperature stable, at high temperature hinder crystal boundary and dislocation movement, improve recrystallization temperature, enhance aluminium
The intensity and heat resistance of alloy；The elements such as iron, magnesium, silicon, boron, titanium, chromium, manganese refine intermetallic compound enhancing in process of setting
Phase lamella or refinement crystal grain, play a part of to regulate and control Solidification Structures.
The above-mentioned rare-earth heat-resistant aluminium alloy conductor material of the present embodiment can be prepared using following methods, the specific steps are as follows:
The aluminium ingot that purity is 99.7% is placed on melt in furnace into aluminum melt, the temperature of aluminum melt is heated by step 1
To 720 DEG C.
The raw material of alloying component needed for preparing above-mentioned aluminium alloy conductor material is added in aluminum melt, passes through tune for step 2
Each alloy addition level reaches alloying component to be made of the element of above-mentioned weight percentage in whole raw material.
The aluminum melt after each alloying element of addition is sufficiently stirred in step 3, after the fusing of each alloying element,
Degasification, slagging-off are carried out, aluminium alloy melt is obtained, aluminium alloy melt is entered into continuous casting and rolling production line at 750 DEG C, is processed into aluminium conjunction
Golden bar；In continuous casting, the hot rolling on milling train by rods and bars of aluminium alloy is 510 DEG C into temperature is rolled, raw by aluminium continuous casting and rolling
Producing line is produced into Aluminum alloy pole material.
Step 4, then Aluminum alloy pole material is heat-treated, heat treatment temperature is 400 DEG C, and the time is 30 hours.
Aluminum alloy pole material after Overheating Treatment is carried out wire drawing by step 5, twisted wire is produced into rare-earth heat-resistant aluminium alloy and leads
Wire material.
After tested, the tensile strength for the aluminium alloy conductor that the present embodiment obtains reaches 350MPa；Conductivity reaches 59.1%.
Longtime running temperature can reach 310 DEG C, and 1 hour trial running is heated at 400 DEG C, and intensity survival rate is greater than 90%.This reality
It applies in example that raw material of aluminum alloy is at low cost, preparation process is simple, is suitble to industrialized production.
In above-described embodiment, in the component of aluminium alloy conductor material component, wherein zirconium, yttrium, iron, magnesium, silicon, copper,
Cobalt, boron, titanium, vanadium, chromium, manganese, nickel element play the role of alloying base aluminum, in the preparation method of above-described embodiment, in Re Chu
Al is precipitated during reason3Intermetallic compounds such as (Zr, RE), the compound is stable at high temperature, effectively enhancing intensity of aluminum alloy
While with heat resistance, influence of the solid solution element to aluminium alloy conductor conductivity is reduced, the conductivity of aluminium alloy conductor is improved.?
The machining deformations such as rolling or wire drawing in above-mentioned preparation method, improve Al11Ce3Intermetallic compound enhances phase morphology, is deforming
Al in journey11Ce3Lamella is thinning or lamella is broken, and intermetallic compound scale becomes smaller, and is gradually uniformly dispersed in the base, deforms
After be heat-treated, intensity, heat resistance and the conductivity enabled aluminum alloy to significantly improves.
Embodiment 2
The present embodiment provides a kind of rare-earth heat-resistant aluminium alloy conductor material, aluminium alloy conductor material is contained by following weight percent
The element of amount forms: Ce 12.00%, Zr 0.30%, Y 0.02%, Fe 0.90%, Mg 0.50%, Si are
0.50%, Cu 0.30%, Co 0.10%, B 0.05%, Ti 0.05%, V 0.04%, Cr 0.05%, Mn are
0.03%, Ni 0.02%, remaining is aluminium.
Above-mentioned native heat-resistant aluminum alloy wire material is prepared using method same as Example 1.
After tested, the tensile strength 350MPa for the aluminium alloy conductor material that the present embodiment obtains, conductivity 59.8% are short
280 DEG C of phase heating, 1 hour intensity survival rate is 94.3%.
Embodiment 3
The present embodiment provides a kind of rare-earth heat-resistant aluminium alloy conductor material, aluminium alloy conductor material is contained by following weight percent
The element of amount forms: Ce10.00%, zirconium Zr0.30%, yttrium Y0.02%, iron Fe0.90%, Mg 4.00%, Si 7.00%,
Cu is 4.00%, Co 0.002%, B 0.70%, Ti 0.15%, V 0.12%, Cr 0.1%, Mn 0.11%, Ni
For 0.12%, other impurities constituent content≤0.10%, remaining is aluminium.
The above-mentioned rare-earth heat-resistant aluminium alloy conductor material of the present embodiment can be prepared using following methods, the specific steps are as follows:
The aluminium ingot that purity is 99.8% is placed on melt in furnace into aluminum melt by step 1, and the temperature of aluminum melt rises to 720
℃。
The raw material of alloying component needed for preparing above-mentioned aluminium alloy conductor material is added in aluminum melt, passes through tune for step 2
Each alloy addition level reaches alloying component to be made of the element of above-mentioned weight percentage in whole raw material.
The aluminum melt after each alloying element of addition is sufficiently stirred in step 3, after the fusing of each alloying element,
Degasification, slagging-off are carried out, aluminium alloy melt is obtained, aluminium alloy melt is entered into continuous casting and rolling production line at 770 DEG C, is processed into aluminium conjunction
Golden bar.In continuous casting, the hot rolling on milling train by rods and bars of aluminium alloy is 520 DEG C into temperature is rolled, is produced by continuous casting and rolling
Line is produced into Aluminum alloy pole material.
Step 4, then Aluminum alloy pole material is heat-treated, heat treatment temperature is 380 DEG C, and the time is 20 hours, will be passed through
Aluminum alloy pole material after heat treatment carries out wire drawing, twisted wire is produced into rare-earth heat-resistant aluminium alloy conductor material.
After tested, aluminium alloy conductor Tensile strength 330Mpa, conductivity 60.2%, short-term 280 DEG C are heated 1 hour
Intensity survival rate is 98.1%.
Embodiment 4
The present embodiment provides a kind of rare-earth heat-resistant aluminium alloy conductor material, aluminium alloy conductor material is contained by following weight percent
The element of amount forms: Ce8.00%, zirconium Zr0.30%, yttrium Y0.02%, nickel 0.08%, Fe 0.80%, Mg 0.50%,
Si is 0.50%, Cu 1.00%, Co 0.20%, B 0.50%, Ti 0.10%, V 0.10%, Cr 0.08%, Mn
For 0.06%, other impurities constituent content≤0.10%, remaining is aluminium.
The above-mentioned rare-earth heat-resistant aluminium alloy conductor material of the present embodiment can be prepared using following methods, the specific steps are as follows:
The aluminium ingot that purity is 99.8% is placed on melt in furnace into aluminum melt by step 1, and the temperature of aluminum melt rises to 750
℃。
The raw material of alloying component needed for preparing above-mentioned aluminium alloy conductor material is added in aluminum melt, passes through tune for step 2
Each alloy addition level reaches alloying component to be made of the element of above-mentioned weight percentage in whole raw material.
The aluminum melt after each alloying element of addition is sufficiently stirred in step 3, after the fusing of each alloying element,
Degasification, slagging-off are carried out, aluminium alloy melt is obtained, aluminium alloy melt is entered into continuous casting and rolling production line at 800 DEG C, is processed into aluminium conjunction
Golden bar；In continuous casting, the hot rolling on milling train by rods and bars of aluminium alloy is 530 DEG C into temperature is rolled, raw by aluminium continuous casting and rolling
Producing line is produced into Aluminum alloy pole material.
Step 4, then Aluminum alloy pole material is heat-treated, heat treatment temperature is 500 DEG C, and the time is 16 hours, will be passed through
Aluminum alloy pole material after heat treatment carries out wire drawing, twisted wire is produced into rare-earth heat-resistant aluminium alloy conductor material.
After tested, the tensile strength 300MPa of aluminium alloy conductor material, conductivity 60.6%, short-term 280 DEG C of heating 1 are small
Shi Qiangdu survival rate is 93.3%.
Embodiment 5
The present embodiment provides a kind of rare-earth heat-resistant aluminium alloy conductor material, aluminium alloy conductor material is contained by following weight percent
The element of amount forms: Ce 5.00%, Zr 0.50%, Y 0.03%, Fe 1.00%, Mg 0.20%, Si are
0.20%, Cu 0.50%, Co 0.10%, B 0.05%, Ti 0.05%, V 0.04%, Cr 0.05%, Mn are
0.03%, Ni 0.02%, other impurities constituent content≤0.10%, remaining is aluminium.
Above-mentioned native heat-resistant aluminum alloy wire material is prepared using method same as Example 4, it is each in preparation process
Parameter is the same as embodiment 4.
After tested, the tensile strength 310MPa of aluminium alloy conductor material, conductivity 61.0%, short-term 280 DEG C of heating 1 are small
Shi Qiangdu survival rate is 94.1%.
Embodiment 6
The present embodiment provides a kind of rare-earth heat-resistant aluminium alloy conductor material, aluminium alloy conductor material is contained by following weight percent
The element of amount forms: Ce11.00%, zirconium Zr0.15%, yttrium Y0.25%, nickel 0.001%, Fe 0.01%, Mg are
0.10%, Si 0.05%, Cu 0.001%, Co 0.10%, B 0.001%, Ti 0.001%, V 0.001%, Cr
For 0.001%, Mn 0.001%, other impurities constituent content≤0.10%, remaining is aluminium.
The above-mentioned rare-earth heat-resistant aluminium alloy conductor material of the present embodiment can be prepared using following methods, the specific steps are as follows:
The aluminium ingot that purity is 99.9% is placed on melt in furnace into aluminum melt by step 1, and the temperature of aluminum melt rises to 730
℃。
The raw material of alloying component needed for preparing above-mentioned aluminium alloy conductor material is added in aluminum melt, passes through tune for step 2
Each alloy addition level reaches alloying component to be made of the element of above-mentioned weight percentage in whole raw material.
The aluminum melt after each alloying element of addition is sufficiently stirred in step 3, after the fusing of each alloying element,
Degasification, slagging-off are carried out, aluminium alloy melt is obtained, aluminium alloy melt is entered into continuous casting and rolling production line at 800 DEG C, is processed into aluminium conjunction
Golden bar；In continuous casting, the hot rolling on milling train by rods and bars of aluminium alloy is 550 DEG C into temperature is rolled, raw by aluminium continuous casting and rolling
Producing line is produced into Aluminum alloy pole material.
Step 4, then Aluminum alloy pole material is heat-treated, heat treatment temperature is 500 DEG C, and the time is 16 hours, will be passed through
Aluminum alloy pole material after heat treatment carries out wire drawing, twisted wire is produced into rare-earth heat-resistant aluminium alloy conductor material.
After tested, the tensile strength 332MPa of aluminium alloy conductor material, conductivity 60.1%, short-term 280 DEG C of heating 1 are small
Shi Qiangdu survival rate is 94%.
Embodiment 7
The present embodiment provides a kind of rare-earth heat-resistant aluminium alloy conductor material, aluminium alloy conductor material is contained by following weight percent
The element of amount forms: Ce 11.00%, Zr 0.20%, Y 0.30%, Fe 0.30%, Mg 3.00%, Si are
4.00%, Cu 3.00%, Co 0.15%, B 0.50%, Ti 0.075%, V 0.065%, Cr 0.065%, Mn
For 0.045%, Ni 0.08%, other impurities constituent content≤0.10%, remaining is aluminium.
Above-mentioned native heat-resistant aluminum alloy wire material is prepared using method same as Example 6, it is each in preparation process
Parameter is the same as embodiment 6.
After tested, the tensile strength 342MPa of aluminium alloy conductor material, conductivity 59.7%, short-term 280 DEG C of heating 1 are small
Shi Qiangdu survival rate is 94.9%.
Embodiment 8
The present embodiment provides a kind of rare-earth heat-resistant aluminium alloy conductor material, aluminium alloy conductor material is contained by following weight percent
The element of amount forms: Ce10.00%, zirconium Zr0.30%, yttrium Y0.10%, iron Fe3.00%, Mg 1.50%, Si 2.50%,
Cu is 1.50%, Co 0.002%, B 0.25%, Ti 0.15%, V 0.12%, Cr 0.06%, Mn 0.11%,
Ni is 0.045%, other impurities constituent content≤0.10%, remaining is aluminium.
The above-mentioned rare-earth heat-resistant aluminium alloy conductor material of the present embodiment can be prepared using following methods, the specific steps are as follows:
The aluminium ingot that purity is 99.8% is placed on melt in furnace into aluminum melt by step 1, and the temperature of aluminum melt rises to 730
℃。
The raw material of alloying component needed for preparing above-mentioned aluminium alloy conductor material is added in aluminum melt, passes through tune for step 2
Each alloy addition level reaches alloying component to be made of the element of above-mentioned weight percentage in whole raw material.
The aluminum melt after each alloying element of addition is sufficiently stirred in step 3, after the fusing of each alloying element,
Degasification, slagging-off are carried out, aluminium alloy melt is obtained, aluminium alloy melt is entered into continuous casting and rolling production line at 770 DEG C, is processed into aluminium conjunction
Golden bar.In continuous casting, the hot rolling on milling train by rods and bars of aluminium alloy is 550 DEG C into temperature is rolled, raw by aluminium continuous casting and rolling
Producing line is produced into Aluminum alloy pole material.
Step 4, then Aluminum alloy pole material is heat-treated, heat treatment temperature is 400 DEG C, and the time is 22 hours, will be passed through
Aluminum alloy pole material after heat treatment carries out wire drawing, twisted wire is produced into rare-earth heat-resistant aluminium alloy conductor material.
After tested, aluminium alloy conductor Tensile strength 345Mpa, conductivity 59.3%, short-term 280 DEG C are heated 1 hour
Intensity survival rate is 97%.
Embodiment 9
The present embodiment provides a kind of rare-earth heat-resistant aluminium alloy conductor material, aluminium alloy conductor material is contained by following weight percent
The element of amount forms: Ce10.00%, zirconium Zr0.30%, yttrium Y0.10%, iron Fe1.50%, Mg 2.50%, Si 2.50%,
Cu is 2.50%, Co 0.002%, B 0.25%, Ti 0.15%, V 0.12%, Cr 0.06%, Mn 0.11%,
Ni is 0.075%, other impurities constituent content≤0.10%, remaining is aluminium.
Above-mentioned native heat-resistant aluminum alloy wire material is prepared using method same as Example 8, it is each in preparation process
Parameter is the same as embodiment 8.
After tested, the tensile strength 339MPa of aluminium alloy conductor material, conductivity 59.5%, short-term 280 DEG C of heating 1 are small
Shi Qiangdu survival rate is 97.5%.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow
It rings in essence of the invention.
Claims (9)
1. a kind of rare-earth heat-resistant aluminium alloy conductor material, it is characterised in that: the aluminium alloy conductor material is by following weight percent
The element of content forms: Ce 5.00%-15.00%, Zr 0.15%-0.70%, Y 0.01%-0.50%, Fe are
0.01%-5.00%, Mg 0.10%-5.00%, Si 0.05%-8.00%, Cu 0.001%-5.00%, Co are
0.001%-0.40%, B 0.001%-0.85%, Ti 0.001%-0.20%, V 0.001%-0.15%, Cr are
0.001%-0.12%, Mn 0.001%-0.12%, Ni 0.001%-0.15%, other impurities constituent content≤
0.10%, remaining is aluminium.
2. a kind of rare-earth heat-resistant aluminium alloy conductor material according to claim 1, it is characterised in that: the aluminium alloy conductor
Material is made of the element of following weight percentage: Ce 10.00%-12.00%, Zr 0.15%-0.30%, Y are
0.02%-0.30%, Fe 0.30%-3.00%, Mg 0.20%-3.00%, Si 0.20%-4.00%, Cu are
0.30%-3.00%, Co 0.10%-0.20%, B 0.05%-0.50%, Ti 0.05%-0.10%, V 0.04%-
0.10%, Cr 0.05%-0.08%, Mn 0.03%-0.06%, Ni 0.02%-0.08%, remaining is aluminium.
3. a kind of rare-earth heat-resistant aluminium alloy conductor material according to claim 1, it is characterised in that: the aluminium alloy conductor
The tensile strength of material reaches 300-350MPa.
4. a kind of rare-earth heat-resistant aluminium alloy conductor material according to claim 1, it is characterised in that: the aluminium alloy conductor
The conductivity of material is greater than 59%.
5. a kind of preparation method of rare-earth heat-resistant aluminium alloy conductor material of any of claims 1-4, feature exist
In: include:
Aluminium ingot is subjected to melting in a furnace, the aluminium ingot is fused into aluminum melt；
The raw material of alloying component needed for preparing the aluminium alloy is added, in the aluminum melt by adjusting respectively closing in the raw material
Golden additive amount makes alloying component reach default ingredient；
The aluminum melt after each alloying element of addition is sufficiently stirred, after each alloying element fusing, into
Row degasification, slagging-off, obtain aluminium alloy melt, the aluminium alloy melt are entered continuous casting and rolling production line, is processed into aluminium alloy rod
Material；
The Aluminum alloy pole material is heat-treated, the Aluminum alloy pole material after Overheating Treatment is subjected to wire drawing, twisted wire life
Produce into rare-earth heat-resistant aluminium alloy conductor material.
6. a kind of preparation method of rare-earth heat-resistant aluminium alloy conductor material according to claim 5, it is characterised in that: by institute
It states aluminium alloy melt and enters continuous casting and rolling production line, be processed into Aluminum alloy pole material, comprising: described in being obtained after degasification, slagging-off
Aluminium alloy melt enters continuous casting and rolling production line at 750-800 DEG C and carries out slab, the hot rolling on milling train by the slab, into rolling temperature
Degree is 500-530 DEG C, obtains the Aluminum alloy pole material.
7. a kind of preparation method of rare-earth heat-resistant aluminium alloy conductor material according to claim 4, it is characterised in that: described
Aluminium ingot is subjected to melting in a furnace, the temperature of the obtained aluminum melt is heated to 720-750 DEG C.
8. a kind of preparation method of rare-earth heat-resistant aluminium alloy conductor material according to claim 4, it is characterised in that: to institute
It states Aluminum alloy pole material to be heat-treated, in which: heat treatment temperature is 350-500 DEG C, and the time is 15-50 hours.
9. a kind of preparation method of rare-earth heat-resistant aluminium alloy conductor material according to claim 4, it is characterised in that: described
Aluminium ingot purity is 99.7% or more.
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| CN111485139B (en) * | 2020-04-29 | 2022-04-22 | 江苏华企铝业科技股份有限公司 | Al-RE-Y alloy and preparation method thereof |
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| CN111893353A (en) * | 2020-08-10 | 2020-11-06 | 广东省材料与加工研究所 | High-strength heat-resistant aluminum alloy material and preparation method thereof |
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| CN112609109A (en) * | 2020-12-09 | 2021-04-06 | 大连交通大学 | Ce-Mg-containing high-strength heat-resistant aluminum alloy and preparation method thereof |
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