WO2011105586A1 - Conducteur en alliage d'aluminium - Google Patents

Conducteur en alliage d'aluminium Download PDF

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Publication number
WO2011105586A1
WO2011105586A1 PCT/JP2011/054399 JP2011054399W WO2011105586A1 WO 2011105586 A1 WO2011105586 A1 WO 2011105586A1 JP 2011054399 W JP2011054399 W JP 2011054399W WO 2011105586 A1 WO2011105586 A1 WO 2011105586A1
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Prior art keywords
aluminum alloy
conductor
intermetallic compound
alloy conductor
wire
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PCT/JP2011/054399
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English (en)
Japanese (ja)
Inventor
茂樹 関谷
京太 須齋
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古河電気工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 古河電気工業株式会社 filed Critical 古河電気工業株式会社
Priority to EP11747542.6A priority Critical patent/EP2540850B1/fr
Priority to CN201180010674.4A priority patent/CN102803531B/zh
Priority to JP2011528135A priority patent/JP4986253B2/ja
Publication of WO2011105586A1 publication Critical patent/WO2011105586A1/fr
Priority to US13/594,480 priority patent/US20120321507A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
    • H01B1/023—Alloys based on aluminium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/003—Drawing materials of special alloys so far as the composition of the alloy requires or permits special drawing methods or sequences
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon

Definitions

  • the present invention relates to an aluminum alloy conductor used as a conductor of an electric wiring body.
  • the cross-sectional area of a pure aluminum conductor needs to be about 1.5 times that of a pure copper conductor, but the weight is still about half that of copper. is there.
  • the above% IACS represents the electrical conductivity when the resistivity 1.7241 ⁇ 10 ⁇ 8 ⁇ m of universal standard annealed copper (International Annealed Copper Standard) is 100% IACS.
  • a material having higher strength has better fatigue characteristics. Therefore, a high-strength aluminum conductor may be applied.
  • the wire harness is required to be easily handled (installation work on the vehicle body) at the time of installation, in general, flexibility can be secured.
  • Dull material annealed material is often used.
  • the aluminum conductor used for the electric wiring body of the moving body has excellent bending fatigue resistance in addition to the strength and flexibility required for handling and mounting, and the conductivity required to flow a lot of electricity. Materials are needed.
  • pure aluminum systems such as aluminum alloy wire rods for power transmission lines (JIS A1060 and JIS A1070) cannot sufficiently withstand repeated bending stresses that occur when doors are opened and closed.
  • alloying with various additive elements is excellent in strength, it causes a decrease in electrical conductivity due to the solid solution phenomenon of the additive elements in aluminum, decreases flexibility, and excessive metals in aluminum. It was a problem that a wire breakage caused by an intermetallic compound occurred during wire drawing by forming an intermetallic compound. Therefore, it is essential to limit and select the additive element and not to disconnect, to prevent a decrease in conductivity and a decrease in flexibility, and to improve strength and bending fatigue resistance.
  • Patent Document 1 Representative examples of aluminum conductors used for electric wiring bodies of moving bodies include those described in Patent Documents 1 to 4.
  • the inventions described in any of the patent documents have further problems to be solved. Since the invention of Patent Document 1 does not perform finish annealing, it cannot secure the flexibility required for the mounting work on the vehicle body.
  • the invention of Patent Document 2 discloses finish annealing, and the conditions are such that the intermetallic compound can be controlled so as to improve the bending fatigue resistance and conductivity while maintaining excellent flexibility. Is different.
  • the invention of Patent Document 3 since the amounts of Mg and Si are large, the intermetallic compound cannot be appropriately controlled, which causes disconnection during wire drawing.
  • the invention of Patent Document 4 is a technique that is being replaced with an alternative product from the viewpoint of environmental load because it contains antimony (Sb) as an additive element.
  • Sb antimony
  • An object of the present invention is to provide an aluminum alloy conductor having sufficient electrical conductivity and tensile strength, and excellent in bending fatigue resistance, flexibility and the like.
  • the inventors of the present invention have made various studies, and by controlling the production conditions such as casting cooling rate, intermediate annealing, and finish annealing for the aluminum alloy to which a specific additive element is added, the particle size and area of two kinds of intermetallic compounds. It has been found that an aluminum alloy conductor having excellent bending fatigue resistance, strength, flexibility and electrical conductivity can be produced by controlling the rate, and the present invention has been completed based on this finding.
  • the present invention provides the following solutions.
  • Two types of intermetallic compounds A and B exist in the conductor The particle size of the intermetallic compound A is in the range of 0.1 ⁇ m to 2 ⁇ m, The particle size of the intermetallic compound B is in the range of 0.03 ⁇ m or more and less than 0.1 ⁇ m,
  • the area ratio a of the intermetallic compound A and the area ratio b of the intermetallic compound B in an arbitrary range in the conductor satisfy 1% ⁇ a ⁇ 6% and 1% ⁇ b ⁇ 5%, respectively.
  • Aluminum alloy conductor characterized by (2) An aluminum alloy conductor containing 0.4 to 0.9 mass% of Fe and 0.01 to 0.4 mass% of Zr, the balance being Al and inevitable impurities, Two types of intermetallic compounds A and B exist in the conductor, The particle size of the intermetallic compound A is in the range of 0.1 ⁇ m to 2 ⁇ m, The particle size of the intermetallic compound B is in the range of 0.03 ⁇ m or more and less than 0.1 ⁇ m, The area ratio a of the intermetallic compound A and the area ratio b of the intermetallic compound B in an arbitrary range in the conductor satisfy 1% ⁇ a ⁇ 6% and 1% ⁇ b ⁇ 7.5%, respectively.
  • An aluminum alloy conductor characterized by: (3) A continuous energization heat treatment including a rapid heating and rapid cooling process is performed at the end of the manufacturing process of the conductor, so that the crystal grain size in the vertical cross section in the wire drawing direction is 1 to 15 ⁇ m (1) or The aluminum alloy conductor according to (2). (4) The aluminum alloy conductor according to any one of (1) to (3), wherein the tensile strength is 80 MPa or more and the electrical conductivity is 60% IACS or more. (5) The aluminum alloy conductor according to any one of (1) to (4), which has a tensile elongation at break of 10% or more. (6) The aluminum alloy conductor according to any one of (1) to (5), which has a recrystallized structure.
  • the aluminum alloy conductor of the present invention is excellent in strength, flexibility and electrical conductivity, and is useful as a battery cable, harness or motor conductor mounted on a moving body, doors and trunks that require excellent bending fatigue resistance, It can be suitably used for a bonnet or the like.
  • a preferred first embodiment of the present invention is an aluminum alloy conductor containing 0.4 to 0.9 mass% of Fe and comprising the balance Al and inevitable impurities,
  • Two types of intermetallic compounds A and B exist in the conductor The particle size of the intermetallic compound A is in the range of 0.1 ⁇ m to 2 ⁇ m, The particle size of the intermetallic compound B is in the range of 0.03 ⁇ m or more and less than 0.1 ⁇ m,
  • the area ratio a of the intermetallic compound A and the area ratio b of the intermetallic compound B in an arbitrary range in the conductor satisfy 1% ⁇ a ⁇ 6% and 1% ⁇ b ⁇ 5%, respectively.
  • the reason why the Fe content is set to 0.4 to 0.9 mass% is mainly to use various effects of the Al—Fe-based intermetallic compound. Fe dissolves only 0.05 mass% in aluminum at 655 ° C., and is even less at room temperature. The remainder crystallizes or precipitates as an intermetallic compound such as Al—Fe or Al—Fe—Si. This crystallized product or precipitate acts as a crystal grain refining material, and improves strength and bending fatigue resistance. If the Fe content is too small, these effects are insufficient, and if it is too much, the crystallized material becomes coarse and the wire drawing workability is poor, the desired bending fatigue resistance cannot be obtained, and the flexibility also decreases. . Moreover, it will be in a supersaturated solid solution state and electrical conductivity will also fall.
  • the Fe content is preferably 0.4 to 0.8 mass%, more preferably 0.5 to 0.7 mass%.
  • a preferred second embodiment of the present invention is an aluminum alloy conductor containing 0.4 to 0.9 mass% Fe and 0.01 to 0.4 mass% Zr, and the balance being Al and inevitable impurities.
  • Two types of intermetallic compounds A and B exist in the conductor The particle size of the intermetallic compound A is 0.1 ⁇ m or more and 2 ⁇ m or less, The particle size of the intermetallic compound B is 0.03 ⁇ m or more and less than 0.1 ⁇ m, The area ratio a of the intermetallic compound A and the area ratio b of the intermetallic compound B satisfy 1% ⁇ a ⁇ 6% and 1% ⁇ b ⁇ 7.5%.
  • the alloy composition includes 0.01 to 0.4 mass% of Zr in addition to the alloy composition of the first embodiment described above.
  • Zr forms an intermetallic compound with Al, and forms a solid solution in Al, thereby contributing to the improvement of the strength and heat resistance of the aluminum alloy conductor. If the Zr content is too small, the effect cannot be expected. If the Zr content is too large, the melting temperature becomes high and it becomes difficult to form a drawn wire. In addition, the conductivity and flexibility are lowered, and the bending fatigue resistance is also deteriorated.
  • the Zr content is preferably 0.1 to 0.35 mass%, more preferably 0.15 to 0.3 mass%.
  • Other alloy compositions and their actions are the same as in the first embodiment described above.
  • the aluminum alloy conductor of the present invention has desired excellent bending fatigue resistance, strength, flexibility and electrical conductivity by defining the size (particle diameter) and area ratio of the intermetallic compound. An aluminum alloy conductor can be obtained.
  • the present invention contains two kinds of intermetallic compounds having different particle diameters at a predetermined area ratio.
  • an intermetallic compound is particles, such as a crystallized substance and a precipitate, which exist in crystal grains.
  • the crystallized material is mainly formed during melt casting, and the precipitate is formed by intermediate annealing and finish annealing, for example, particles such as Al—Fe, Al—Fe—Si, and Al—Zr.
  • the area ratio represents the ratio of intermetallic compounds contained in the present alloy in terms of area, and can be calculated as described in detail below based on a photograph observed by TEM.
  • the intermetallic compound A is mainly composed of Al—Fe, and a part thereof includes Al—Fe—Si, Al—Zr and the like. These intermetallic compounds work as crystal grain refiners and improve strength and bending fatigue resistance.
  • the reason why the area ratio a of the intermetallic compound A is 1% ⁇ a ⁇ 6% is that these effects are insufficient if the amount is too small, and if the amount is too large, disconnection is likely to occur due to the intermetallic compound. Flexural fatigue characteristics cannot be obtained and flexibility is also reduced.
  • the intermetallic compound B is mainly composed of Al—Fe—Si and Al—Zr. These intermetallic compounds improve strength and bending fatigue resistance by precipitation.
  • the area ratio b of the intermetallic compound B is set to 1% ⁇ b ⁇ 5% in the first embodiment and 1% ⁇ b ⁇ 7.5% in the second embodiment. This is because it is insufficient, and if it is too much, it causes disconnection due to excessive precipitation. Also, flexibility is reduced.
  • the intermetallic compounds A and B having two types of dimensions in order to set the area ratio to the above value, it is necessary to set each alloy composition within the above-described range. is there. And it is realizable by controlling appropriately a casting cooling rate, intermediate annealing temperature, finish annealing conditions, etc.
  • the casting cooling rate is an average cooling rate from the start of solidification of the aluminum alloy ingot to 200 ° C.
  • a method for changing the cooling rate for example, the following three methods can be cited. That is, (1) change the size (thickness) of the iron mold, (2) provide a water cooling mold on the lower surface of the mold and forcibly cool (the cooling speed also changes by changing the amount of water), (3) the amount of molten metal cast Change. If the casting cooling rate is too slow, the Al—Fe-based crystallized product becomes coarse, and the desired structure cannot be obtained, and cracking tends to occur. If it is too fast, an excessive solid solution of Fe occurs, the target structure cannot be obtained, and the electrical conductivity is lowered. In some cases, casting cracks can also occur.
  • the casting cooling rate is usually 1 to 20 ° C./second, preferably 5 to 15 ° C./second.
  • the intermediate annealing temperature is the temperature at which heat treatment is performed during wire drawing.
  • the intermediate annealing is performed mainly to regain the flexibility of the wire that has been hardened by wire drawing. If the intermediate annealing temperature is too low, the recrystallization is insufficient and the yield strength becomes excessive, so that flexibility cannot be secured, and there is a high possibility that the wire will not be obtained due to the subsequent wire drawing. When too high, it will be in an over-annealed state, recrystallization grain coarsening will occur and flexibility will fall remarkably, and the possibility that a wire will not be obtained due to breakage in the subsequent wire drawing will increase.
  • the intermediate annealing temperature is usually 300 to 450 ° C, preferably 350 to 450 ° C.
  • the time for the intermediate annealing is usually 30 minutes or more. This is because if it is less than 30 minutes, the time required for the formation and growth of recrystallized grains is insufficient, and the flexibility of the wire cannot be recovered. Preferably it is 1 to 6 hours.
  • the average cooling rate from the heat treatment temperature during intermediate annealing to 100 ° C. is not particularly specified, but is preferably 0.1 to 10 ° C./min.
  • the finish annealing is performed, for example, by continuous energization heat treatment in which annealing is performed by Joule heat generated from itself by passing an electric current through a wire that passes through two electrode wheels.
  • the continuous energization heat treatment includes rapid heating and rapid cooling steps, and can be annealed by controlling the wire temperature and time. Cooling is performed by passing the wire continuously through water after rapid heating. If the wire temperature during annealing is too low or too high, or if one or both of the annealing times are too short or too long, the desired structure cannot be obtained.
  • the wire temperature during annealing is too low, if one or both of the annealing time is too short, the necessary flexibility when mounting on the vehicle is not obtained, if the wire temperature during annealing is too high, In one or both of cases where the annealing time is too long, the strength is lowered and the bending fatigue resistance is also deteriorated. That is, the wire temperature y (° C.), the use of equations represented by annealing time x (seconds), 26x -0.6 + 377 within a range of 0.03 ⁇ x ⁇ 0.55 ⁇ y ⁇ 19x -0.6 It is necessary that the annealing conditions satisfy +477.
  • the wire temperature represents the temperature immediately before passing through the water, which is the highest in the wire.
  • finish annealing includes rapid heating and quenching processes in addition to continuous energization heat treatment, for example, running annealing in which the wire continuously anneals through an annealing furnace maintained at a high temperature, and the wire in the magnetic field. It may be induction heating that passes and anneals continuously.
  • the annealing conditions are not the same as those for continuous energization heat treatment because the atmosphere and heat transfer coefficient are different, but even in the case of running annealing and induction heating, including these rapid heating and quenching processes, the prescribed intermetallic compound
  • finish annealing conditions thermal history
  • the aluminum alloy conductor of the present invention having a precipitation state can be obtained.
  • the crystal grain size in the vertical cross section of the aluminum alloy conductor in the wire drawing direction is 1 to 15 ⁇ m.
  • the reason for this is that if the particle size is too small, the partially recrystallized structure remains and the tensile elongation at break is remarkably reduced, and if it is too large, a coarse structure is formed and the deformation behavior becomes non-uniform, and similarly the tensile break This is because the elongation is lowered and the strength is significantly lowered.
  • the crystal grain size is preferably 1 to 10 ⁇ m.
  • the aluminum alloy conductor of the present invention has a tensile strength (TS) of 80 MPa or more and a conductivity of 60% IACS or more, preferably a tensile strength of 80 to 150 MPa and a conductivity of 60 to 65% IACS, more preferably tensile.
  • the strength is 100 to 140 MPa and the conductivity is 61 to 64% IACS.
  • Tensile strength and electrical conductivity have contradictory properties. The higher the tensile strength, the lower the electrical conductivity, and conversely, pure aluminum with a low tensile strength has a higher electrical conductivity.
  • the conductivity is desirably 60% IACS or more.
  • the aluminum alloy conductor of the present invention has sufficient flexibility. This can be obtained by performing the above-described finish annealing.
  • the tensile elongation at break is used as an index of the flexibility of the aluminum alloy conductor, preferably 10% or more. The reason for this is that if the tensile elongation at break is too small, it becomes difficult to handle the wiring (for example, mounting work on the vehicle body) as described above. This is because it may cause The tensile elongation at break is more preferably 20 to 50%, still more preferably 25 to 45%.
  • the aluminum alloy conductor of the present invention includes [1] melting, [2] casting, [3] hot or cold processing (groove roll processing, etc.), [4] wire drawing, [5] heat treatment (intermediate annealing), It can be manufactured through steps of [6] wire drawing and [7] heat treatment (finish annealing).
  • the aluminum alloy conductor of the present invention produced by heat treatment as described above has a recrystallized structure.
  • the recrystallized structure is a structure state composed of crystal grains with few lattice defects such as dislocations introduced by plastic working. By having a recrystallized structure, tensile elongation at break and electrical conductivity are recovered, and sufficient flexibility can be obtained.
  • (A) Crystal grain size The cross section of the specimen cut out perpendicular to the wire drawing direction was filled with resin, and after mechanical polishing, electrolytic polishing was performed.
  • the electrolytic polishing conditions are: an ethanol solution containing 20% perchloric acid, a liquid temperature of 0 to 5 ° C., a voltage of 10 V, a current of 10 mA, and a time of 30 to 60 seconds.
  • anodic finishing was performed using 2% borohydrofluoric acid under the conditions of a voltage of 20 V, a current of 20 mA, and a time of 2 to 3 minutes. This structure was photographed with an optical microscope of 200 to 400 times, and the particle size was measured by a crossing method.
  • an average particle size was obtained by arbitrarily drawing a straight line on the photographed photo, and measuring the number of intersections of the length of the straight line and the grain boundary. The particle size was evaluated by changing the length and number of lines so that 50 to 100 particles could be counted.
  • (B) Identification of intermetallic compound, dimensions (particle diameter), and area ratio The wires of Examples and Comparative Examples were made into thin films by an electrolytic polishing thin film method (twin jet polishing method), and a transmission electron microscope (TEM) was used. An arbitrary range was observed at a magnification of 6000 to 30000 times.
  • the area ratios a and b of the intermetallic compound are set based on the photographed images, and a range in which about 5 to 10 for the intermetallic compound A and 20 to 50 for the intermetallic compound B can be counted.
  • the area of the intermetallic compound was calculated from the size and number of each intermetallic compound, and the area of each intermetallic compound was divided by the area of the range to be counted.
  • the area ratio is calculated by using the sample thickness of the thin piece as a reference thickness of 0.15 ⁇ m. If the sample thickness is different from the reference thickness, convert the sample thickness to the reference thickness, that is, by multiplying the area ratio calculated based on the photographed (reference thickness / sample thickness) The area ratio can be calculated.
  • the sample thickness was calculated by observing the interval of the equal thickness stripes observed from the photograph, and was about 0.15 ⁇ m in all the samples.
  • C Tensile strength and tensile elongation at break Three pieces each were tested according to JIS Z 2241, and the average value was obtained.
  • D Conductivity In a constant temperature bath holding a test piece having a length of 300 mm at 20 ° C. ( ⁇ 0.5 ° C.), three specific resistances were measured using the four probe method, and the average conductivity was measured. Calculated. The distance between the terminals was 200 mm.
  • E Number of repeated fractures As a standard for bending fatigue resistance, the strain amplitude at room temperature was ⁇ 0.17%.
  • Bending fatigue resistance varies with strain amplitude.
  • the strain amplitude can be determined by the wire diameter of the wire rod 1 and the bending radii of the bending jigs 2 and 3 shown in FIG. 1, the wire diameter of the wire rod 1 and the bending radii of the bending jigs 2 and 3 are arbitrarily set and bent. It is possible to conduct a fatigue test. By using a double-bending bending fatigue tester manufactured by Fujii Seiki Co., Ltd.
  • the wire 1 was inserted with a gap of 1 mm between the bending jigs 2 and 3, and repeatedly moved in such a manner as to be along the jigs 2 and 3.
  • One end of the wire was fixed to a holding jig 5 so that it could be bent repeatedly, and a weight 4 of about 10 g was hung from the other end.
  • the wire 1 fixed to the holding jig 5 also moves and can be bent repeatedly.
  • the repetition is performed under the condition of 1.5 Hz (1.5 reciprocations per second), and when the wire specimen 1 breaks, the weight 4 falls and stops counting. If the number of times of opening and closing per day is 10 and the use for 10 years is assumed, the number of times of opening and closing is 36500 (calculated as 365 days a year).
  • the actually used electric wire is not a single wire but has a stranded wire structure, and since the coating process is performed, the burden on the electric wire conductor becomes a fraction.
  • the number of repeated fractures of 50000 times or more that can ensure sufficient bending fatigue resistance as an evaluation value for a single wire is preferred, and more preferably 70000 times or more.
  • Comparative Examples 101 to 103 the additive component of the aluminum alloy is outside the scope of the present invention.
  • Comparative Example 101 since Fe is too small, intermetallic compounds A and B are reduced, and the tensile strength and the number of repeated fractures are poor.
  • Comparative Example 102 since there is too much Fe, intermetallic compounds A and B increase, and the number of repeated fractures and electrical conductivity are poor.
  • Comparative Example 103 since there is too much Zr, the intermetallic compound B increases, and the number of repeated fractures and the electrical conductivity are poor.
  • Comparative Examples 104 to 110 and Comparative Example 201 show that the area ratio of the intermetallic compound in the aluminum alloy conductor is out of the range of the present invention or is broken during the production.
  • an example is shown in which the aluminum alloy conductor defined by the present invention is not obtained depending on the production conditions of the aluminum alloy.
  • the casting cooling rate was too slow, so the wire was broken during wire drawing.
  • the casting cooling rate is too fast, the amount of intermetallic compound A is small, the amount of intermetallic compound B is large, and the number of repeated fractures and the electrical conductivity are poor.
  • Comparative Examples 106 to 108 the temperature of the intermediate annealing was too high or too low, or the time was too short.
  • Comparative Example 109 is in an unannealed state due to insufficient softening in the final annealing step, and no intermetallic compound was observed, so that the tensile elongation at break was poor.
  • Comparative Example 110 since the finish annealing temperature was too high, the amount of intermetallic compound B was small, and the tensile strength, electrical conductivity, tensile elongation at break, and number of repeated fractures were poor.
  • finish annealing was performed in a batch annealing furnace, but the amount of intermetallic compound B was reduced and the number of repeated fractures was poor.
  • Examples 1 to 13 aluminum alloy conductors excellent in tensile strength, electrical conductivity, tensile breaking elongation (flexibility), and number of repeated breaking (flexural fatigue resistance) were obtained.

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Abstract

La présente invention concerne le conducteur en alliage d'aluminium présenté ci-dessous, qui permet d'obtenir un conducteur en alliage d'aluminium ayant une conductibilité électrique suffisante, une résistance à la traction suffisante, ainsi que d'excellentes propriétés de flexibilité, de résistance à la fatigue par flexion, etc. Un conducteur en alliage d'aluminium d'après la présente invention contient de 0,4 à 0,9 % en masse de Fe, le reste contenant Al et les inévitables impuretés. Le conducteur susmentionné contient deux types de composés intermétalliques (A, B). La grosseur des grains du composé A varie de 0,1 μm à 2 μm. La grosseur des grains du composé B est supérieure ou égale à 0,03 μm et inférieure à 0,1 μm. De plus, dans une quelconque plage donnée à l'intérieur du conducteur susmentionné, le rapport de section (a) du composé A et le rapport de section (b) du composé B sont respectivement tels que 1 % ≤ a ≤ 6 % et 1 % ≤ b ≤ 5 %.
PCT/JP2011/054399 2010-02-26 2011-02-25 Conducteur en alliage d'aluminium WO2011105586A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP11747542.6A EP2540850B1 (fr) 2010-02-26 2011-02-25 Conducteur en alliage d'aluminium
CN201180010674.4A CN102803531B (zh) 2010-02-26 2011-02-25 铝合金导体
JP2011528135A JP4986253B2 (ja) 2010-02-26 2011-02-25 アルミニウム合金導体
US13/594,480 US20120321507A1 (en) 2010-02-26 2012-08-24 Aluminum alloy conductor

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JP2010043489 2010-02-26

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012008588A1 (fr) * 2010-07-15 2012-01-19 古河電気工業株式会社 Conducteur en alliage d'aluminium
EP2754725A4 (fr) * 2011-09-05 2015-06-17 Dyden Corp Matière électroconductrice à base d'aluminium et fil électrique et câble obtenus à l'aide de cette matière
JP2016180186A (ja) * 2012-03-29 2016-10-13 大電株式会社 微結晶金属導体の製造方法及び微結晶金属導体
JP2017525845A (ja) * 2014-07-03 2017-09-07 エルエス ケーブル アンド システム リミテッド． アルミニウム合金導体電線及びその製造方法
JP2018070915A (ja) * 2016-10-25 2018-05-10 矢崎総業株式会社 アルミニウム素線、並びにそれを用いたアルミニウム電線及びワイヤーハーネス

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EP2754725A4 (fr) * 2011-09-05 2015-06-17 Dyden Corp Matière électroconductrice à base d'aluminium et fil électrique et câble obtenus à l'aide de cette matière
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JP2017525845A (ja) * 2014-07-03 2017-09-07 エルエス ケーブル アンド システム リミテッド． アルミニウム合金導体電線及びその製造方法
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EP2540850A1 (fr) 2013-01-02
US20120321507A1 (en) 2012-12-20
CN102803531B (zh) 2015-11-25
EP2540850A4 (fr) 2013-11-06
JPWO2011105586A1 (ja) 2013-06-20
EP2540850B1 (fr) 2017-11-15
CN102803531A (zh) 2012-11-28

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