US20200238385A1 - Compressor component for transport and method for manufacturing same - Google Patents

Compressor component for transport and method for manufacturing same Download PDF

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Publication number
US20200238385A1
US20200238385A1 US16/651,211 US201816651211A US2020238385A1 US 20200238385 A1 US20200238385 A1 US 20200238385A1 US 201816651211 A US201816651211 A US 201816651211A US 2020238385 A1 US2020238385 A1 US 2020238385A1
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Prior art keywords
mass
transport
alloy
aluminum
compressor component
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US16/651,211
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Inventor
Yasuo Kotetsu
Tomohei Sugiyama
Kyohei Ando
Takuya ARAYAMA
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Toyota Industries Corp
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Toyota Industries Corp
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Assigned to KABUSHIKI KAISHA TOYOTA JIDOSHOKKI reassignment KABUSHIKI KAISHA TOYOTA JIDOSHOKKI ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ARAYAMA, TAKUYA, ANDO, KYOHEI, KOTETSU, YASUO, SUGIYAMA, TOMOHEI
Publication of US20200238385A1 publication Critical patent/US20200238385A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/20—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by extruding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/009—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of turbine components other than turbine blades
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/0408—Light metal alloys
    • C22C1/0416—Aluminium-based alloys
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/047—Making non-ferrous alloys by powder metallurgy comprising intermetallic compounds
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/20—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by extruding
    • B22F2003/208—Warm or hot extruding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2301/00—Metallic composition of the powder or its coating
    • B22F2301/05—Light metals
    • B22F2301/052—Aluminium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2301/00—Metallic composition of the powder or its coating
    • B22F2301/20—Refractory metals
    • B22F2301/205—Titanium, zirconium or hafnium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2301/00—Metallic composition of the powder or its coating
    • B22F2301/35—Iron
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2301/00—Metallic composition of the powder or its coating
    • B22F2301/40—Intermetallics other than rare earth-Co or -Ni or -Fe intermetallic alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/04—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of turbine blades

Definitions

  • the present invention relates to a compressor component for a transport, which is made of an aluminum-alloy that is excellent in mechanical characteristics at a high temperature, and a manufacturing method thereof.
  • turbocharger impellers are caused to rotate at high speed exceeding 10,000 rpm under a high-temperature condition of around 150° C., and are therefore expected to have high strength and high rigidity at such a high temperature, and to be reduced in weight in order to reduce energy loss. In addition, strength durable for high speed rotation is also expected.
  • a turbocharger impeller was manufactured by cutting a cast/forged product made of 2618 alloy (an alloy composed of Cu: 1.9-2.7 mass %, Mg: 1.3-1.8 mass %, Ni: 0.9-1.2 mass %, Fe: 0.9-1.3 mass %, Si: 0.1-0.25 mass %, and Ti: 0.04-0.1 mass %, the remainder being Al).
  • Patent Document 1 discloses a technique for providing an Al—Cu—Mg-based aluminum alloy extruded material of which the strength at a high temperature (160° C.) has been more improved than those in the past.
  • Patent Document 1 describes a heat-resistant aluminum-alloy extruded material that is characterized by including Cu: 3.4-5.5% (mass %, the same shall apply hereafter), Mg: 1.7-2.3%, Ni: 1.0-2.5%, Fe: 0.5-1.5%, Mn: 0.1-0.4%, Zr: 0.05-0.3%, Si: less than 0.1%, and Ti: less than 0.1%, the remainder being Al and unavoidable impurities, which is excellent in high-temperature strength and high-temperature fatigue characteristics.
  • Patent Document 1
  • turbocharger impellers are required to rotate at more higher speed, and thus an aluminum-alloy material for constituting a turbocharger impeller is desired to be excellent in mechanical characteristics even in a temperature range higher than that in the past.
  • dynamic strength including creep property, etc. is also required to be excellent in addition to static strength.
  • the present invention has been made in view of such a technical background, and it is an object of the invention to provide a compressor component for a transport that is excellent in mechanical characteristics (static strength, creep property, etc.) at a high temperature, and a manufacturing method thereof.
  • the present invention provides the following means.
  • a compressor component for a transport which is made of an aluminum-alloy that includes Fe: 5.0-9.0 mass %, V: 0.1-3.0 mass %, Mo: 0.1-3.0 mass %, Zr: 0.1-2.0 mass %, and Ti: 0.02-2.0 mass %, the remainder being Al and unavoidable impurities, wherein
  • the compressor component for a transport includes an Al—Fe-based intermetallic compound
  • an average circle-equivalent diameter of the Al—Fe-based intermetallic compound falls within a range of 0.1-3.0 ⁇ m.
  • the intermetallic compound is an Al—Fe—V—Mo-based intermetallic compound including at least Al. Fe, V, and Mo, and
  • the Al content is 81.60-92.37 mass %
  • the Fe content is 2.58-10.05 mass %
  • the V content is 1.44-4.39 mass %
  • the Mo content is 2.45-3.62 mass %.
  • a method for manufacturing a compressor component for a transport including:
  • a compression-molding step of compression-molding an aluminum-alloy powder comprising Fe: 5.0-9.0 mass %, V: 0.1-3.0 mass %, Mo: 0.1-3.0 mass %, Zr: 0.1-2.0 mass %, and Ti: 0.02-2.0 mass %, the remainder being Al and unavoidable impurities, to thereby obtain a green compact;
  • the compressor component for a transport includes therein an Al—Fe-based intermetallic compound, and
  • an average circle-equivalent diameter of the Al—Fe-based intermetallic compound falls within a range of 0.1-3.0 ⁇ m.
  • a method for manufacturing a compressor component for a transport including:
  • the compressor component for a transport includes therein an Al—Fe-based intermetallic compound, and
  • an average circle-equivalent diameter of the Al—Fe-based intermetallic compound falls within a range of 0.1-3.0 ⁇ m.
  • a compressor component for a transport which is made of an aluminum-alloy that is excellent in mechanical characteristics (static strength, creep property, etc.) at a high temperature is provided.
  • a compressor component for a transport which is made of an aluminum-alloy in which (values of) mechanical characteristics at a high temperature are further improved, is provided.
  • a compressor component for a transport which is made of an aluminum-alloy in which (values of) mechanical characteristics at a high temperature are still further improved, is provided.
  • a compressor component for a transport which is made of an aluminum-alloy that is excellent in mechanical characteristics (static strength, creep property, etc.) at a high temperature, can be manufactured.
  • the resulting compressor component for a transport can be suitably used as a compressor component for a transport such as automobiles, and the like.
  • a molten aluminum-alloy is powdered by rapid-solidification using an atomizing method to obtain an aluminum-alloy powder. Therefore, diffusion of each element of the alloy during solidification is restrained, coarsening of crystal grains and precipitates can be restrained, also appearance of an equilibrium phase or a metastable phase can be restrained, and moreover, the solid-solution amount of Fe that is a transition element can be increased, so that a compressor component for a transport, which is made of an aluminum-alloy that is even more excellent in mechanical characteristics (static strength, creep property, etc.) at a high temperature can be manufactured.
  • FIG. 1 is a perspective view that shows one example of a compressor component for a transport according to the present invention.
  • a compressor component for a transport of the present invention is configured to be made of an aluminum-alloy that includes Fe: 5.0-9.0 mass %, V: 0.1-3.0 mass %, Mo: 0.1-3.0 mass %, Zr: 0.1-2.0 mass %, and Ti: 0.02-2.0 mass %, the remainder being Al and unavoidable impurities, wherein the compressor component for a transport includes an Al—Fe-based intermetallic compound, and
  • an average circle-equivalent diameter of the Al—Fe-based intermetallic compound falls within a range of 0.1-3.0 ⁇ m. According to such a configuration, a compressor component for a transport, which is made of an aluminum-alloy that is excellent in mechanical characteristics (static strength, creep property, etc.) at a high temperature can be provided.
  • an aluminum-alloy powder that includes Fe: 5.0-9.0 mass %, V: 0.1-3.0 mass %, Mo: 0.1-3.0 mass %, Zr: 0.1-2.0 mass %, and Ti: 0.02-2.0 mass %, the remainder being Al and unavoidable impurities, is prepared.
  • the means for manufacturing the aluminum-alloy powder having the above-specified composition are not particularly limited, it is preferable to powder a molten aluminum-alloy including Fe: 5.0-9.0 mass %, V: 0.1-3.0 mass %, Mo: 0.1-3.0 mass %, Zr: 0.1-2.0 mass %, and Ti: 0.02-2.0 mass %, the remainder being Al and unavoidable impurities, by rapid-solidification using an atomizing method, to thereby obtain an aluminum-alloy powder (an aluminum-alloy atomized powder) (powdering step).
  • a molten aluminum-alloy including Fe: 5.0-9.0 mass %, V: 0.1-3.0 mass %, Mo: 0.1-3.0 mass %, Zr: 0.1-2.0 mass %, and Ti: 0.02-2.0 mass %, the remainder being Al and unavoidable impurities, by rapid-solidification using an atomizing method, to thereby obtain an aluminum-alloy powder (an aluminum-
  • the molten aluminum-alloy having the above-mentioned specific composition is prepared by a normal dissolution method.
  • the resulting molten aluminum-alloy is powdered by the atomizing method.
  • the atomizing method is a method in which fine droplets of molten aluminum alloy are atomized and sprayed by flow of a gas such as nitrogen gas, etc. from a spray nozzle, and are rapidly solidified to thereby obtain a fine aluminum-alloy powder.
  • the cooling rate is preferably 10 2 -10 5 ° C./second. It is preferable to obtain an aluminum-alloy powder of which an average particle diameter is 30-70 ⁇ m.
  • the yield in the preparation of the alloy powder can be remarkably improved, and owing to being 70 ⁇ m or less, mixing of coarse oxides and foreign matters can be avoided.
  • the resulting aluminum-alloy powder is preferably classified using a sieve.
  • the resulting aluminum-alloy powder obtained in the above-mentioned powdering step is compression-molded to obtain a green compact (compression-molding step).
  • the aluminum-alloy powder that has been heated to 250-300° C. is filled in a mold that has been heated to 230-270° C., and is compression-molded into a predetermined shape to thereby obtain a green compact.
  • the pressure for the compression-molding is not particularly limited, normally it is preferably set to 0.5-3.0 ton/cm 2 .
  • the green compact is preferably made to have a relative density of 60-90%.
  • the shape of the green compact is not particularly limited, it is preferably cylindrical-shaped or disk-shaped in consideration of the subsequent extruding step.
  • the resulting green compact obtained in the above-mentioned compression-molding step is hot-extruded to obtain an extruded material (extruding step).
  • the green compact is subjected to machining such as chamfering as needed, thereafter subjected to degassing treatment, and heated to be subjected to the extruding step.
  • the heating temperature for the green compact prior to the extrusion is preferably set to 300-450° C.
  • the green compact is inserted into an extrusion container, and applied with an applied pressure by an extruding ram so as to be extruded from an extrusion die in a form of a round-bar.
  • the extrusion container is preferably heated to 300-400° C. in advance.
  • the extrusion pressure is preferably set to 10-25 MPa.
  • the resulting extruded material obtained in the above-mentioned extruding step is cut to obtain a compressor component for a transport (cutting step).
  • the extruded material is subjected to a lathe machining, and thereafter is cut using a cutting tool such as a ball end mill, etc. in a 5-axis machining center or the like to thereby obtain a compressor component for a transport having a predetermined shape (see FIG. 1 ).
  • the resulting compressor component for a transport obtained in the above-mentioned cutting step is configured to include therein an Al—Fe-based intermetallic compound, and in the cross-sectional surface structure of the compressor component for a transport, the average circle-equivalent diameter of which falls within a range of 0.1-3.0 ⁇ m.
  • a compressor component for a transport 1 of the present invention can be obtained (see FIG. 1 ).
  • the compressor component for a transport 1 which was obtained by the manufacturing method of a compressor component for a transport according to the above-mentioned invention is configured to be made of an aluminum-alloy that includes Fe: 5.0-9.0 mass %, V: 0.1-3.0 mass %, Mo: 0.1-3.0 mass %, Zr: 0.1-2.0 mass %, and Ti: 0.02-2.0 mass %, the remainder being Al and unavoidable impurities, wherein the compressor component for a transport includes therein an Al—Fe-based intermetallic compound, and in the cross-sectional surface structure of the compressor component for a transport, an average circle-equivalent diameter of the Al—Fe-based intermetallic compound falls within a range of 0.1-3.0 ⁇ m.
  • the compressor component for a transport 1 according to the present invention is not limited to the compressor component for a transport obtained by the above-mentioned manufacturing method, and includes those obtained by other manufacturing methods.
  • the aluminum-alloy is an aluminum-alloy that includes Fe: 5.0-9.0 mass %, V: 0.1-3.0 mass %, Mo: 0.1-3.0 mass/%, Zr: 0.1-2.0 mass %, and Ti: 0.02-2.0 mass %, the remainder being Al and unavoidable impurities.
  • the Fe (component) is an element, which forms an Al—Fe-based intermetallic compound having a high melting point, and can improve the mechanical characteristics (static strength, creep property, etc.) in a high temperature range of, for example, 200-350° C.
  • the Fe content of the aluminum-alloy is set within a range of 5.0-9.0 mass %. If the Fe content is less than 5.0 mass %, the strength of the compressor component for a transport is reduced, on the other hand, if the Fe content exceeds 9.0 mass %, the ductility of the compressor component for a transport is reduced, so that a compressor component for a transport that is excellent in mechanical characteristics (static strength, creep property, etc.) at a high temperature cannot be obtained.
  • the Fe content of the aluminum-alloy is preferably within a range of 7.0-8.0 mass %.
  • the V (component) is an element, which forms an Al—Fe—V—Mo-based intermetallic compound, and can improve the mechanical characteristics (static strength, creep property, etc.) in a high temperature range of, for example, 200-350° C.
  • the V content of the aluminum-alloy is set within a range of 0.1-3.0 mass %. If the V content is less than 0.1 mass %, the strength of the compressor component for a transport is reduced, on the other hand, if the V content exceeds 3.0 mass %, the ductility of the compressor component for a transport is reduced, so that a compressor component for a transport that is excellent in mechanical characteristics (static strength, creep property, etc.) at a high temperature cannot be obtained.
  • the V content of the aluminum-alloy is preferably within a range of 1.0-2.0 mass %.
  • the Mo (component) is an element, which forms an Al—Fe—V—Mo-based intermetallic compound, and can improve the mechanical characteristics (static strength, creep property, etc.) in a high temperature range of, for example, 200-350° C.
  • the Mo content of the aluminum-alloy is set within a range of 0.1-3.0 mass %. If the Mo content is less than 0.1 mass %, the strength of the compressor component for a transport is reduced, on the other hand, if the V content exceeds 3.0 mass %, the ductility of the compressor component for a transport is reduced, so that a compressor component for a transport that is excellent in mechanical characteristics (static strength, creep property, etc.) at a high temperature cannot be obtained.
  • the Mo content of the aluminum-alloy is preferably within a range of 1.0-2.0 mass %.
  • the Zr is an element, which prevents coarsening of an Al—Fe—V—Mo-based intermetallic compound, and can achieve fine crystallization of the intermetallic compound.
  • high-temperature strength can be improved, and self-diffusion of Al in the Al matrix can be restrained, so that the effect of improving the creep property can be obtained.
  • the Zr content of the aluminum-alloy is set within a range of 0.1-2.0 mass %. If the Zr content is less than 0.1 mass %, there occurs a problem in that the effects of precipitation strengthening and dispersion strengthening cannot be exhibited.
  • the Zr content of the aluminum-alloy is preferably in the range of 0.5-1.5 mass %.
  • the Ti serves to form an Al-(Ti, Zr)-based intermetallic compound having an L 12 structure with Al in cooperation with the Zr.
  • the Ti content of the aluminum-alloy is set within a range of 0.02-2.0 mass %. If the Ti content is less than 0.02 mass %, there occurs a problem in that the effects of precipitation strengthening and dispersion strengthening cannot be exhibited.
  • the Ti content of the aluminum-alloy is preferably within a range of 0.5-1.0 mass %.
  • the aluminum-alloy may have a configuration (composition) further containing 0.0001-0.03 mass % of B (Boron).
  • composition composition
  • B Brunauer-Teller
  • crystal grains can be made fine to thereby improve the mechanical characteristics.
  • the compressor component for a transport includes an Al—Fe-based intermetallic compound, and in the cross-sectional surface structure of the compressor component for a transport, an average circle-equivalent diameter of the Al—Fe-based intermetallic compound falls within a range of 0.1-3.0 ⁇ m. If the average circle-equivalent diameter of the intermetallic compound is less than 0.1 ⁇ m, the effect of dispersion strengthening cannot be exhibited. On the other hand, if the average circle-equivalent diameter of the intermetallic compound exceeds 3.0 ⁇ m, the intermetallic compound becomes coarse, and from which breakages start, so that there occurs a problem in that the mechanical characteristics are reduced.
  • the average circle-equivalent diameter of the Al—Fe-based intermetallic compound is preferably within a range of 0.3-2.0 ⁇ m, and still further preferably within a range of 0.4-1.5 ⁇ m.
  • the Al—Fe-based intermetallic compound is not particularly limited, and an Al—Fe—V—Mo-based intermetallic compound that contains at least Al, Fe. V, and Mo can be exemplified.
  • the Al—Fe—V—Mo based intermetallic compound is preferably configured such that the Al content is 81.60-92.37 mass %, the Fe content is 2.58-10.05 mass %, the V content is 1.44-4.39 mass %, and the Mo content is 2.45-3.62 mass %. In this case, favorable mechanical characteristics can be obtained in a high-temperature range of 200° C. or higher.
  • the equivalent circle diameter of the Al—Fe-based intermetallic compound corresponds to a value converted to a diameter of a circle that has the same area as that of the Al—Fe-based intermetallic compound in an SEM photograph (image) of the cross section of the compressor component for a transport 1 .
  • the resulting aluminum-alloy powder was preheated to a temperature of 280° C.
  • the preheated aluminum-alloy powder was filled in a mold that has been heated to and held at 280° C., and compression-molded with a pressure of 1.5 ton/cm 2 to thereby obtain a cylindrical green compact (molded body) having a diameter of 210 mm and a length of 250 mm.
  • the resulting green compact was chamfered to have a diameter of 203 mm with a lathe to thereby obtain a green compact billet (compression-molding step).
  • the resulting billet was heated to 400° C., the heated billet was inserted into an extrusion container having an inner diameter of 210 mm, which has been heated to and held at 400° C., and extruded by an indirect extrusion method with an extrusion die having an inner diameter of 83 mm at an extrusion ratio of 6.4 (extruding step).
  • the resulting extruded material was subjected to a lathe machining, and thereafter was cut using a ball end mill (a cutting tool) in a 5-axis machining center to thereby obtain a compressor component for a transport 1 as shown in FIG. 1 (cutting step).
  • “Average Circle Equivalent Diameter ( ⁇ m) of Intermetallic Compounds” in Tables 1 to 3 shows an average circle equivalent diameter ( ⁇ m) of Al—Fe—V—Mo-based intermetallic compounds (intermetallic compounds including at least Al, Fe, V, and Mo) that are present in the matrix of each compressor component for a transport.
  • an average circle equivalent diameter ( ⁇ m) of intermetallic compounds a sample piece for structure observation having a dimension of 10 mm in length, 10 mm in width and 10 mm in thickness was cut out from the main body (a shaft portion) at the center of the resulting compressor component for a transport, and was polished for microstructure observation using a cross-section specimen preparing device (cross section polisher), the sample piece thus polished was photographed to take an SEM photograph (a scanning electron micrograph), and from the photographic image of the SEM photograph, an average circle equivalent diameter ( ⁇ m) of intermetallic compounds was determined (for evaluation). For ten Al—Fe—V—Mo-based intermetallic compounds that are present in the visual field ranging over 1.5815 mm 2 in the SEM photograph, an average equivalent circle diameter was determined.
  • the resulting compressor components for a transport were processed to tensile test pieces having a gauge length of 20 mm and a parallel portion diameter of 4 mm, and the tensile test pieces were subjected to high-temperature tensile test to measure high temperature tensile strengths (tensile strengths at 260° C.).
  • the high-temperature tensile test was performed under a measurement environment of 260° C. after the high-temperature tensile test pieces were held at 260° C. for 100 hours. The evaluation was made on the basis of the following criteria.
  • the resulting compressor components for a transport were processed to fatigue test pieces having a gauge length of 30 mm and a parallel portion diameter of 8 mm, and the fatigue test pieces were subjected to high-temperature fatigue test to measure high temperature fatigue strengths (fatigue strengths at 260° C.).
  • the high-temperature fatigue test was repeatedly performed 500,000 times under a measurement environment of 260° C. with a condition of 3600 rpm after the high-temperature tensile specimens were held at 260° C. for 100 hours. The evaluation was made on the basis of the following criteria
  • the resulting compressor components for a transport were processed to creep test pieces having a gauge length of 30 mm and a parallel portion diameter of 6 mm, and the creep test pieces were subjected to high-temperature creep test to measure high-temperature creep properties (creep properties at 260° C.).
  • the high-temperature creep test was performed under a measurement environment of 260° C. after the creep test pieces were held at 260° C. for 100 hours.
  • the creep rupture strengths were calculated under conditions of a temperature of 260° C. and a rupture time of 300 hours, and evaluation was made on the basis of the following criteria
  • ⁇ Creep rupture strength at 260° C. 210 MPa or more and less than 215 MPa
  • the compressor components for a transport of Working Examples 1-12 according to the present invention were excellent in various mechanical characteristics at a high temperature (260° C.).
  • the compressor component for a transport according to the present invention, and a compressor component for a transport obtained by the manufacturing method of the present invention are excellent in mechanical characteristics at a high temperature, therefore can be suitably used as a compressor component for a transport such as automobiles, etc.

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  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Compressor (AREA)
  • Powder Metallurgy (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
US16/651,211 2017-10-03 2018-09-13 Compressor component for transport and method for manufacturing same Abandoned US20200238385A1 (en)

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JP2017193270A JP2019065359A (ja) 2017-10-03 2017-10-03 高温における機械的特性に優れたアルミニウム粉末合金製輸送機用圧縮機部品及びその製造方法
JP2017-193270 2017-10-03
PCT/JP2018/033951 WO2019069651A1 (ja) 2017-10-03 2018-09-13 輸送機用圧縮機部品及びその製造方法

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JP7118705B2 (ja) * 2018-04-03 2022-08-16 株式会社豊田自動織機 高温における機械的特性に優れたアルミニウム合金製輸送機用圧縮機部品及びその製造方法
JP7494693B2 (ja) * 2020-10-12 2024-06-04 株式会社豊田自動織機 輸送機用圧縮機部品
JP7512830B2 (ja) * 2020-10-12 2024-07-09 株式会社豊田自動織機 輸送機用圧縮機部品及びその製造方法
JP2022063495A (ja) * 2020-10-12 2022-04-22 株式会社豊田自動織機 輸送機用圧縮機部品の製造方法

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US4715893A (en) * 1984-04-04 1987-12-29 Allied Corporation Aluminum-iron-vanadium alloys having high strength at elevated temperatures
JPS6148551A (ja) * 1984-08-13 1986-03-10 Sumitomo Light Metal Ind Ltd 高温強度に優れたアルミニウム合金成形材
JP2951262B2 (ja) * 1996-03-13 1999-09-20 三菱重工業株式会社 高温強度に優れたアルミニウム合金
JPH108162A (ja) * 1996-06-17 1998-01-13 Sumitomo Light Metal Ind Ltd 高温強度に優れたアルミニウム合金材の製造方法
JP3702044B2 (ja) * 1996-07-10 2005-10-05 三菱重工業株式会社 アルミニウム合金製羽根車及びその製造方法
JP3735205B2 (ja) * 1998-11-30 2006-01-18 三菱重工業株式会社 アルミニウム合金製羽根車及びその製造方法
JP5284935B2 (ja) 2009-12-08 2013-09-11 株式会社神戸製鋼所 高温強度及び高温疲労特性に優れた耐熱アルミニウム合金押出材
WO2015141191A1 (ja) * 2014-03-15 2015-09-24 株式会社Uacj Ａｌ合金鋳物製コンプレッサーインペラー及びその製造方法

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