CN110343910A - Al alloy powder and its manufacturing method, aluminium alloy extruded product and its manufacturing method - Google Patents
Al alloy powder and its manufacturing method, aluminium alloy extruded product and its manufacturing method Download PDFInfo
- Publication number
- CN110343910A CN110343910A CN201910255179.8A CN201910255179A CN110343910A CN 110343910 A CN110343910 A CN 110343910A CN 201910255179 A CN201910255179 A CN 201910255179A CN 110343910 A CN110343910 A CN 110343910A
- Authority
- CN
- China
- Prior art keywords
- mass
- aluminium alloy
- extruded product
- intermetallic compound
- mentioned
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Classifications
-
- 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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
-
- 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
-
- 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
- B22F2303/00—Functional details of metal or compound in the powder or product
- B22F2303/15—Intermetallic
-
- 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
- B22F2304/00—Physical aspects of the powder
- B22F2304/05—Submicron size particles
- B22F2304/056—Particle size above 100 nm up to 300 nm
-
- 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
- B22F2304/00—Physical aspects of the powder
- B22F2304/05—Submicron size particles
- B22F2304/058—Particle size above 300 nm up to 1 micrometer
-
- 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
- B22F2304/00—Physical aspects of the powder
- B22F2304/10—Micron size particles, i.e. above 1 micrometer up to 500 micrometer
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Powder Metallurgy (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Extrusion Of Metal (AREA)
Abstract
The present invention is capable of providing a kind of excellent aluminium alloy extruded product of mechanical property at high temperature, the aluminium alloy extruded product contains the Fe:5.0 mass mass of %~9.0 %, the V:0.1 mass mass of %~3.0 %, the Mo:0.1 mass mass of %~3.0 %, the Zr:0.1 mass mass of %~2.0 %, the Ti:0.02 mass mass of %~2.0 %, 1 kind or two kinds of metals among Cr and Mn containing respectively 0.02 mass of mass %~2.0 %, surplus is made of Al and inevitable impurity, contain Al-Fe series intermetallic compound in above-mentioned aluminium alloy extruded product, in the section structure structure of above-mentioned aluminium alloy extruded product, the average equivalent circular diameter of above-mentioned Al-Fe series intermetallic compound is 0.1 μm~3.0 μm range.
Description
Technical field
The present invention relates to the excellent Al alloy powder of mechanical property at high temperature and its manufacturing methods, machine at high temperature
The aluminium alloy extruded product (extruded product) and its manufacturing method of tool excellent.
Background technique
The compressor impeller of compressor impeller in the turbocharger of car combustion engine etc., in 150 DEG C or so of high temperature
Receiving is more than the high speed rotation of 10000rpm under situation, therefore it is required that having high-intensitive and high rigidity at such high temperatures.Moreover, being
Seek the reduction of energy loss, compressor impeller also requires lightweight, is also required to be resistant to high-speed rotating intensity.
For example, previous, compressor impeller is to 2618 alloys (containing Cu:1.9 mass mass %, the Mg:1.3 matter of %~2.7
Measure mass %, the Ni:0.9 mass of %~1.8 %~1.2 mass %, Fe:0.9 mass mass %, the Si:0.1 mass of %~1.3 %
~0.25 mass %, the Ti:0.04 mass mass % of %~0.1, the alloy that surplus is made of Al) casting forged article carry out
Machining and manufacture.
But by the high speed of machining in recent years, the cutting product of aluminium alloy extruded product is being promoted, into one
Step needs the improvement of the raising of machinability, elevated temperature strength.
For example, the technology provides a kind of intensity under high temperature (160 DEG C) Patent Document 1 discloses a kind of technology
More in the past than the Al-Cu-Mg line aluminium alloy extrded material improved.That is, describe in patent document 1 a kind of elevated temperature strength with
And the heat-resisting aluminium alloy extrded material of fatigue at high temperature excellent, which is characterized in that containing Cu:3.4~5.5% (quality %, with
Under it is identical), 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%, Ti: less than 0.1%, surplus are made of Al and inevitable impurity.
Patent document 1: No. 5284935 bulletins of Japanese Patent No.
Summary of the invention
But the technical field of the internal combustion engine in automobile etc., compressor impeller etc. are required further high speed rotation,
Therefore, the aluminum alloy materials as the constituent material of compressor impeller etc. are hoped for even if than previous higher temperature region
Middle mechanical property is also excellent.In addition, other than static strength, also requiring creep properties as the characteristic required these components
Deng fatigue resistance it is also excellent.
The present invention is completed in view of such technical background, excellent the purpose is to provide mechanical property at high temperature
Al alloy powder and its excellent aluminium alloy extruded product and its manufacturing method of manufacturing method, mechanical property at high temperature.
In order to achieve the above object, the present invention provides technical solution below.
[1] a kind of Al alloy powder, which is characterized in that contain Fe:5.0 mass mass %, the V:0.1 mass of %~9.0 %
~3.0 mass %, Mo:0.1 mass mass %, Zr:0.1 mass mass %, the Ti:0.02 mass of %~2.0 of %~3.0 %~
2.0 mass %, containing respectively 1 in Cr and Mn kind of 0.02 mass of mass %~2.0 % or two kinds of metals, surplus by
Al and inevitable impurity are constituted,
Contain Al-Fe series intermetallic compound in above-mentioned Al alloy powder, in the section structure of above-mentioned Al alloy powder
In structure, range that the average equivalent circular diameter of above-mentioned Al-Fe series intermetallic compound is 0.1 μm~3.0 μm.
[2] Al alloy powder according to preceding paragraph 1, above-mentioned aluminium alloy also contain 0.0001 mass of mass %~0.03 %
B.
[3] a kind of manufacturing method of Al alloy powder, which is characterized in that melt is enabled aluminum alloy to using atomization and is quenched and solidified
And powdered, to obtain Al alloy powder, the molten aluminium alloy contains Fe:5.0 mass mass %, the V:0.1 matter of %~9.0
Measure mass %, the Mo:0.1 mass of %~3.0 %~3.0 mass %, Zr:0.1 mass mass %, the Ti:0.02 mass of %~2.0 %
~2.0 mass % contain respectively 1 in Cr and Mn kind of 0.02 mass of mass %~2.0 % or two kinds of metals, surplus
It is made of Al and inevitable impurity.
[4] a kind of aluminium alloy extruded product, which is characterized in that contain Fe:5.0 mass mass %, the V:0.1 matter of %~9.0
Measure mass %, the Mo:0.1 mass of %~3.0 %~3.0 mass %, Zr:0.1 mass mass %, the Ti:0.02 mass of %~2.0 %
~2.0 mass % contain respectively 1 in Cr and Mn kind of 0.02 mass of mass %~2.0 % or two kinds of metals, surplus
It is made of Al and inevitable impurity,
Contain Al-Fe series intermetallic compound in above-mentioned aluminium alloy extruded product, in above-mentioned aluminium alloy extruded product
In section structure structure, range that the average equivalent circular diameter of above-mentioned Al-Fe series intermetallic compound is 0.1 μm~3.0 μm.
[5] aluminium alloy extruded product according to preceding paragraph 4, above-mentioned aluminium alloy extruded product also contain 0.0001 mass %
The B of~0.03 mass %.
[6] aluminium alloy extruded product according to preceding paragraph 4 or 5, above-mentioned intermetallic compound are at least to contain Al, Fe, V
With the Al-Fe-V-Mo series intermetallic compound of Mo,
The containing ratio of Al in above-mentioned intermetallic compound is that the containing ratio of 81.60 mass of mass %~92.37 %, Fe is
The containing ratio that the containing ratio of 2.58 mass of mass %~10.05 %, V is 1.44 mass of mass %~4.39 %, Mo is 2.45 matter
Measure the mass of %~3.62 %.
[7] a kind of manufacturing method of aluminium alloy extruded product characterized by comprising
By Al alloy powder compression molding described in preceding paragraph 1 or 2 to obtain the compression molding process of powder compact；With
To the progress hot extrusion of above-mentioned powder compact to obtain the extrusion process of extrded material,
Contain Al-Fe series intermetallic compound in above-mentioned extrded material, in the section structure structure of above-mentioned extrded material
In, range that the average equivalent circular diameter of above-mentioned Al-Fe series intermetallic compound is 0.1 μm~3.0 μm.
According to the invention of [1], it can provide mechanical property at high temperature excellent Al alloy powder.Therefore, by using
The Al alloy powder can manufacture the excellent Aluminum alloy extrusion material of mechanical property (static strength, creep properties etc.) at high temperature
Expect (extruded product).
According to the invention of [2], the Al alloy powder for more improving mechanical property at high temperature (value) can be provided.
According to the invention of [3], it is quenched and solidified and powdered, is able to suppress due to enabling aluminum alloy to melt using atomization
The diffusion in solidification of each element of alloy, inhibits the coarsening of crystal grain and precipitate, and it is steady to be able to suppress balance phase, standard
Determine the appearance of phase, the expansion of the solid solution capacity of transition elements Fe can be reached, the mechanical property that can be manufactured at high temperature is (quiet strong
Degree, creep properties etc.) excellent Al alloy powder.Therefore, by using the Al alloy powder, machine at high temperature can be manufactured
The aluminium alloy extruded product (extruded product) of tool excellent.
According to the invention of [4], it can provide mechanical property (static strength, creep properties etc.) at high temperature excellent aluminium alloy
Extrded material (extruded product).The aluminium alloy extruded product is for example suitable as the turbo-compressor leaf of automobile turbocharger
The internal combustion engine component of wheel etc..In other words, which is for example suitable as internal combustion at high temperature rotate at high speed
Mechanism member (internal combustion engine component).
According to the invention of [5], the aluminium alloy extruded product for more improving mechanical property at high temperature (value) can be provided.
According to the invention of [6], it can provide and further improve the aluminium alloy extruded of mechanical property (value) at high temperature
Material.
According to the invention of [7], the excellent aluminium of mechanical property (static strength, creep properties etc.) at high temperature can be manufactured and closed
Golden extrded material (extruded product).Obtained aluminium alloy extruded product is for example suitable as the turbine pressure of automobile turbocharger
The internal combustion engine component of contracting machine impeller etc..In other words, the aluminium alloy extruded product obtained is for example suitable as at high temperature with high speed
The internal combustion engine component (internal combustion engine component) of rotation.
Detailed description of the invention
Fig. 1 is the perspective view for indicating an example of aluminium alloy extruded product (extruded product) of the invention.
Description of symbols
1 ... aluminium alloy extruded product (extruded product)
Specific embodiment
Al alloy powder of the present invention is following compositions: containing Fe:5.0 mass mass %, the V:0.1 matter of %~9.0
Measure mass %, the Mo:0.1 mass of %~3.0 %~3.0 mass %, Zr:0.1 mass mass %, the Ti:0.02 mass of %~2.0 %
~2.0 mass % contain respectively 1 in Cr and Mn kind of 0.02 mass of mass %~2.0 % or two kinds of metals, surplus
It is made of Al and inevitable impurity, Al-Fe series intermetallic compound is contained in above-mentioned Al alloy powder, in above-mentioned aluminium
In the section structure structure of alloy powder, the average equivalent circular diameter of above-mentioned Al-Fe series intermetallic compound is 0.1 μm~3.0
μm range.By that for such composition, can provide mechanical property at high temperature excellent Al alloy powder.Therefore, pass through
Using Al alloy powder of the invention, the excellent aluminium of mechanical property (static strength, creep properties etc.) at high temperature can be manufactured
Alloy extrusion material (extruded product).
The average grain diameter of above-mentioned Al alloy powder is not particularly limited, but preferably 30 μm~70 μm of range.By for
30 μm or more, can significantly improve alloy powder production yield rate, by for 70 μm hereinafter, can be avoided coarse oxide
With being mixed into for foreign matter.
Then, of the present invention, Al alloy powder manufacturing method is illustrated.In this manufacturing method, use
Atomization enables aluminum alloy to melt and is quenched and solidified and powdered, to obtain Al alloy powder (aluminium alloy atomized powder) (powdered
Process), the molten aluminium alloy contains Fe:5.0 mass mass %, V:0.1 mass mass %, Mo:0.1 of %~3.0 of %~9.0
Mass %, Zr:0.1 mass mass %, the Ti:0.02 mass mass % of %~2.0 of %~2.0 of quality %~3.0, containing respectively
1 in Cr and Mn kind of 0.02 mass of mass %~2.0 % or two kinds of metals, surplus is by Al and inevitable impurity structure
At.According to such manufacturing method, it is capable of providing the Al alloy powder for having above-mentioned composition, that is, above-mentioned manufacturing method is used,
Following Al alloy powders can be manufactured, the Al alloy powder is the Al alloy powder of above-mentioned specific composition, in the aluminium alloy
Contain Al-Fe series intermetallic compound, in the section structure structure of above-mentioned Al alloy powder, above-mentioned Al-Fe system in powder
The range that the average equivalent circular diameter of intermetallic compound is 0.1 μm~3.0 μm.
In above-mentioned powdered process, the molten aluminium alloy of above-mentioned specific composition is prepared using common fusion method.It adopts
The molten aluminium alloy powdered that will be obtained with atomization.Atomization is to be closed aluminium using the air-flow of nitrogen from spray nozzle etc.
The fine droplet of golden melt is atomized and is sprayed, the method for being quenched and solidified fine droplet to obtain fine Al alloy powder.
Cooling velocity is preferably 102~105DEG C/sec.It is preferred that obtaining the Al alloy powder that average grain diameter is 30 μm~70 μm.Obtained aluminium
It is preferable to use sieves for alloy powder to be classified.
Furthermore Al alloy powder (invention of above-mentioned [1]) of the present invention is not limited to using above-mentioned manufacturing method
Obtained Al alloy powder also includes the such Al alloy powder obtained using other manufacturing methods.
Then, the manufacturing method of aluminium alloy extruded product of the present invention is illustrated.It will be in above-mentioned powder chemical industry
Al alloy powder compression molding obtained in sequence, to obtain powder compact (compression molding process).An example is enumerated, will warm up
250 DEG C~300 DEG C of Al alloy powder is filled into the mold for being heated to 230 DEG C~270 DEG C, and compression molding is regulation shape
Shape, to obtain powder compact.The pressure of above-mentioned compression molding is not particularly limited, but is generally preferably set as 0.5 ton/cm2~3.0
Ton/cm2.Additionally, it is preferred that being formed as the powder compact that relative density is 60%~90%.The shape of above-mentioned powder compact is without special limit
It is fixed, but consider next extrusion process, it is preferably set to cylindrical shape or discoid.
Then, hot extrusion is carried out to the powder compact obtained in above-mentioned compression molding process, (is squeezed to obtain extrded material
Press process).For above-mentioned powder compact, after implementing the machinings such as face cutting as needed, implements degassing process, is heated,
For extrusion process.The heating temperature of powder compact before extruding is preferably set to 300 DEG C~450 DEG C.When squeezing, for example, will pressure
Powder is inserted into extrusion cylinder, using push-out ram provided application moulding pressure, is squeezed into such as pole shape from extrusion die.At this point,
It is preferred that above-mentioned extrusion cylinder is previously heated to 300 DEG C~400 DEG C.In this way in hot lower extruding, powder compact carries out plasticity
Deformation obtains Al alloy powder (particle) and is bonded to each other to pressing body made of integration.In above-mentioned extruding, squeeze pressure
It is preferably set to 10MPa~25MPa.
The extrded material 1 obtained in above-mentioned extrusion process is following compositions: containing Al-Fe system in the extrded material
Intermetallic compound, in the section structure structure of above-mentioned extrded material, above-mentioned Al-Fe series intermetallic compound is averagely worked as
Measure range of the circular diameter at 0.1 μm~3.0 μm.In such manner, it is possible to obtain aluminium alloy extruded product of the invention.
The aluminium alloy extruded product obtained using above-mentioned of the present invention, aluminium alloy extruded product manufacturing method
(aluminium alloy extruded product of the present invention) is following compositions: containing Fe:5.0 mass mass %, the V:0.1 matter of %~9.0
Measure mass %, the Mo:0.1 mass of %~3.0 %~3.0 mass %, Zr:0.1 mass mass %, the Ti:0.02 mass of %~2.0 %
~2.0 mass % contain respectively 1 in Cr and Mn kind of 0.02 mass of mass %~2.0 % or two kinds of metals, surplus
It is made of Al and inevitable impurity, Al-Fe series intermetallic compound is contained in above-mentioned aluminium alloy extruded product, upper
It states in the section structure structure of aluminium alloy extruded product, the average equivalent circular diameter of above-mentioned Al-Fe series intermetallic compound is
0.1 μm~3.0 μm of range.
Furthermore aluminium alloy extruded product of the present invention is not limited to the aluminium obtained using above-mentioned manufacturing method and closed
Golden extrded material also includes the such aluminium alloy extruded product obtained using other manufacturing methods.
Then, the manufacturing method below for above-mentioned Al alloy powder and Al alloy powder of the present invention, aluminium
The composition of " aluminium alloy " in the manufacturing method of alloy extrusion material and aluminium alloy extruded product is described in detail.Above-mentioned aluminium alloy
Be containing Fe:5.0 mass mass %, V:0.1 mass mass %, the Mo:0.1 mass mass of %~3.0 of %~3.0 of %~9.0 %,
Zr:0.1 mass mass %, the Ti:0.02 mass mass % of %~2.0 of %~2.0 contains respectively 0.02 matter of mass %~2.0
1 in Cr and Mn kind of amount % or two kinds of metals, the aluminium alloy that surplus is made of Al and inevitable impurity.
Above-mentioned Fe (ingredient) is can to generate with dystectic Al-Fe series intermetallic compound, improves such as 200 DEG C
The element of mechanical property (static strength, creep properties etc.) in~350 DEG C of high temperature region.Fe in above-mentioned aluminium alloy contains
There is rate to be set as the range of 5.0 mass of mass %~9.0 %.When Fe containing ratio is less than 5.0 mass %, will cause aluminium alloy extruded
The reduction of the intensity of the products such as material, when Fe containing ratio is more than 9.0 mass %, the ductility of the products such as aluminium alloy extruded product
It reduces, the systems such as the excellent aluminium alloy extruded product of mechanical property (static strength, creep properties etc.) at high temperature cannot be accessed
Product.Wherein, the Fe containing ratio in above-mentioned aluminium alloy is preferably the range of 7.0 mass of mass %~8.0 %.
Above-mentioned V (ingredient) is can to generate Al-Fe-V-Mo series intermetallic compound, improves such as 200 DEG C~350
DEG C high temperature region in mechanical property (static strength, creep properties etc.) element.V containing ratio in above-mentioned aluminium alloy is set
For the range of 0.1 mass of mass %~3.0 %.When V containing ratio is less than 0.1 mass %, aluminium alloy extruded product etc. will cause
The reduction of the intensity of product, when V containing ratio is more than 3.0 mass %, the ductility reduction of the products such as aluminium alloy extruded product, no
It can obtain the products such as the excellent aluminium alloy extruded product of mechanical property (static strength, creep properties etc.) at high temperature.Wherein,
V containing ratio in above-mentioned aluminium alloy is preferably the range of 1.0 mass of mass %~2.0 %.
Above-mentioned Mo (ingredient) is can to generate Al-Fe-V-Mo series intermetallic compound, improves such as 200 DEG C~350
DEG C high temperature region in mechanical property (static strength, creep properties etc.) element.Mo containing ratio in above-mentioned aluminium alloy
It is set as the range of 0.1 mass of mass %~3.0 %.When Mo containing ratio is less than 0.1 mass %, aluminium alloy extruded product will cause
The reduction of the intensity of equal products, when Mo containing ratio is more than 3.0 mass %, the ductility of the products such as aluminium alloy extruded product drops
It is low, the products such as the excellent aluminium alloy extruded product of mechanical property (static strength, creep properties etc.) at high temperature cannot be accessed.
Wherein, the Mo containing ratio in above-mentioned aluminium alloy is preferably the range of 1.0 mass of mass %~2.0 %.
Above-mentioned Zr (ingredient) is not make Al-Fe-V-Mo series intermetallic compound that coarsening occur and can be realized gold
The element of the fine crystal of compound between category.In addition, can also obtain can be improved elevated temperature strength by containing above-mentioned Zr, it can
Inhibit the self-diffusion of the Al in Al matrix so as to improve the effect of creep properties.Zr containing ratio in above-mentioned aluminium alloy is set as
The range of 0.1 mass of mass %~2.0 %.When Zr containing ratio is less than 0.1 mass %, generation can not play precipitation strength and
The problem of effect of dispersion-strengtherning.In addition, when Zr containing ratio is more than 2.0 mass %, can generate between the coarse metal containing Zr
Compound, (referring to aftermentioned comparative example 9), therefore good mechanical property cannot be accessed.Wherein, the Zr in above-mentioned aluminium alloy
Containing ratio is preferably the range of 0.5 mass of mass %~1.5 %.
Above-mentioned Ti (ingredient) has forms L at it and the synergistic effect of above-mentioned Zr between Al12The Al- of structure
The effect of (Ti, Zr) series intermetallic compound.In addition, can also be obtained since diffusion coefficient of the above-mentioned Ti in Al matrix is small
To the effect that creep properties can be made to improve.Ti containing ratio in above-mentioned aluminium alloy is set as 0.02 mass of mass %~2.0 %'s
Range.When Ti containing ratio is less than 0.02 mass %, the effect that cannot play precipitation strength and dispersion-strengtherning can be led to the problem of.
In addition, when Ti containing ratio is more than 2.0 mass %, ductility reduction, the mechanical property that cannot be accessed at high temperature is (quiet strong
Degree, creep properties etc.) excellent Al alloy powder and aluminium alloy extruded product.Wherein, the Ti containing ratio in above-mentioned aluminium alloy
The preferably range of 0.5 mass of mass %~1.0 %.
In the present invention, above-mentioned aluminium alloy also contains a kind in Cr and Mn or two kinds of metals.That is, above-mentioned aluminium alloy
Can be composition also containing the Cr:0.02 mass mass of %~2.0 %, alternatively, can for also containing Mn:0.02 mass %~
The composition of 2.0 mass %, alternatively, can for also containing Cr:0.02 mass %~2.0 mass % and Mn:0.02 mass %~
The composition of 2.0 mass %.Cr (ingredient) and Mn (ingredient) is dissolved to play the effect of solution strengthening in Al parent phase.But
When temperature of processing becomes 500 DEG C or more, precipitation will do it, be easy to make mechanical property at high temperature to reduce, therefore uncommon
Temperature of processing is hoped to be set as less than 500 DEG C.In addition, the dispersed particle of Cr and/or Mn, has the crystal boundary after inhibiting recrystallization
Mobile effect, therefore the direction ST organized at the die parting line (parting line) being able to suppress in such as forging process is flat
The coarsening of equal crystal particle diameter, can aluminium alloy extruded product throughout the present invention, forged material entirety and obtain fine
Crystal grain, subgrain can more improve mechanical property.
In addition, respectively being contained by Zr and Cr and/or Mn with above-mentioned containing ratio, so as to be dissolved in Al parent phase
And make offset yield strength (σ0.2: generate stress value corresponding to 0.2% overstrain) increase.
By the Cr containing 0.02 mass % or more, Cr can be made to be solid-solubilized in Al parent phase, so as to make mechanical property
(fatigue strength especially at high temperature) improves, in addition, can be improved wear resistance, Cr is dissolved in Al parent phase so as to make
Corrosion resistance improves, and improves temper softening drag, therefore by containing Cr, can be improved hardenability, so as to improve heat
Handle hardness.In addition, by the containing ratio of Cr being set as 2.0 mass % hereinafter, Cr can be made to be solid-solubilized in Al parent phase, Jin Er
While capable of preventing the reduction of mechanical property caused by as generating the coarse intermetallic compound containing Cr, it can be avoided thermally conductive
The reduction of rate can prevent the heating of the contact surface caused by sliding, so as to improve resistance to occlusion (glued: scuffing)
Property.Wherein, in the case where containing Cr, Cr containing ratio is more preferably set as 0.05 mass of mass %~1.5 %.
In addition, Mn can be made to be solid-solubilized in Al parent phase by the Mn containing 0.02 mass % or more, so as to which obtain can
The effect for improving mechanical property (fatigue strength especially at high temperature).In addition, by the way that the containing ratio of Mn is set as 2.0 matter
% is measured hereinafter, Mn can be made to be solid-solubilized in Al parent phase, and then can prevent from being drawn by generating the coarse intermetallic compound containing Mn
The reduction of the mechanical property risen.Wherein, contain Mn in the case where, more preferably by Mn containing ratio be set as 0.05 mass %~
1.5 mass %.
In the present invention, above-mentioned aluminium alloy also can be set to the B (boron) also containing 0.0001 mass of mass %~0.03 %
Composition (composition).By being set as containing forming for B with above-mentioned specific ratios, crystal grain can be miniaturize, improve mechanical property.
In the present invention, in above-mentioned Al alloy powder or in above-mentioned aluminium alloy extruded product, contain Al-Fe system metal
Between compound, in the section structure structure of above-mentioned Al alloy powder or above-mentioned aluminium alloy extruded product, above-mentioned Al-Fe system gold
The range that the average equivalent circular diameter of compound is 0.1 μm~3.0 μm between category.When the average equivalent circle of above-mentioned intermetallic compound
When diameter is less than 0.1 μm, the effect of dispersion-strengtherning can not be played.In addition, if the average equivalent circle of above-mentioned intermetallic compound
Diameter is more than 3.0 μm, then becomes coarse intermetallic compound, can be broken using it as starting point, therefore generates mechanical property drop
Low problem.Wherein, in the section structure structure of above-mentioned Al alloy powder or above-mentioned aluminium alloy extruded product, above-mentioned Al-Fe
The average equivalent circular diameter of series intermetallic compound is preferably 0.3 μm~2.0 μm of range, and then particularly preferably 0.4 μm~
1.5 μm of range.
It as above-mentioned Al-Fe series intermetallic compound, is not particularly limited, but can for example enumerate and at least contain Al, Fe, V
With the Al-Fe-V-Mo series intermetallic compound of Mo etc..It is preferred that: in above-mentioned Al-Fe-V-Mo series intermetallic compound
The containing ratio of Al is that the containing ratio of 81.60 mass %, Fe of mass %~92.37 is 2.58 mass %, V of mass %~10.05
Containing ratio is that the containing ratio of 1.44 mass %, Mo of mass %~4.39 is the 2.45 mass % of mass %~3.62, in this case,
Good mechanical property can be obtained in 200 DEG C or more of high-temperature area.
Furthermore the equivalent circle diameter of above-mentioned Al-Fe series intermetallic compound, refer to as have and above-mentioned Al alloy powder
The area of Al-Fe series intermetallic compound in the SEM photograph (image) in the section of last or above-mentioned aluminium alloy extruded product is identical
Area diameter of a circle and the value that converts.
Embodiment
Then, specific embodiment of the invention is illustrated, but the present invention is not particularly limited to by these embodiments.
1 > of < embodiment
Fe:8.0 mass %, V:2.0 mass %, Mo:2.0 mass %, Zr:1.0 mass %, Ti:1.0 matter will be contained
%, Cr:0.1 mass %, Al:85.9 mass % are measured, and the aluminium alloy containing inevitable impurity heats, and obtains 1000 DEG C
After molten aluminium alloy, which is atomized using gas, it is quenched and solidified and powdered, obtains average grain diameter
For 50 μm of Al alloy powders (aluminium alloy atomized powder).
Then, obtained Al alloy powder is preheated to 280 DEG C of temperature, which is filled into
Heating is maintained in the mold of identical temperature i.e. 280 DEG C, with 1.5 tons/cm2Pressure carry out compression molding, obtain diameter
The powder compact (formed body) of the cylindrical shape of 210mm, length 250mm.Then, obtained powder compact is subjected to face cutting with lathe
Until diameter 203mm, the blank of powder compact is obtained.
Then, by obtained blank heating to 400 DEG C, which is inserted into heating and is maintained at 400 DEG C
In the extrusion cylinder of internal diameter 210mm, uses indirect extrusion method to be squeezed with extrusion ratio 6.4 with the mould (dice) of internal diameter 83mm, obtain
To extrded material 1 (referring to Fig.1).
2 > of < embodiment
As the aluminium alloy for being used to form molten aluminium alloy, uses and has contained Fe:8.0 mass %, V:2.0 mass %, Mo:
2.0 mass %, Zr:1.0 mass %, Ti:1.0 mass %, Cr:0.5 mass %, Al:85.5 mass %, and containing inevitable
The aluminium alloy of impurity carry out similarly to Example 1 in addition to this, obtained extrded material 1.
3~8 > of < embodiment
As the aluminium alloy for being used to form molten aluminium alloy, use composition of alloy shown in table 1 (containing inevitable
Impurity) aluminium alloy carry out similarly to Example 1 in addition to this, obtain extrded material 1.
9~16 > of < embodiment
As the aluminium alloy for being used to form molten aluminium alloy, use composition of alloy shown in table 2 (containing inevitable
Impurity) aluminium alloy carry out similarly to Example 1 in addition to this, obtain extrded material 1.
< embodiment 17,18,1~6 > of comparative example
As the aluminium alloy for being used to form molten aluminium alloy, use composition of alloy shown in table 3 (containing inevitable
Impurity) aluminium alloy carry out similarly to Example 1 in addition to this, obtain extrded material 1.
7~14 > of < comparative example
As the aluminium alloy for being used to form molten aluminium alloy, use composition of alloy shown in table 4 (containing inevitable
Impurity) aluminium alloy carry out similarly to Example 1 in addition to this, obtain extrded material 1.
For each aluminium alloy extruded product (extruded product) obtained as described above, commented based on following evaluation assessments
Valence.It the results are shown in table 1~4.Furthermore in each element column in table 1~4, "-" label indicates to be less than detection limit
The numerical value (that is, not detecting the element) of (0.005 mass %).
In addition, " the average equivalent circular diameter (μm) of intermetallic compound " in table 1~4, is in each Aluminum alloy extrusion material
Al-Fe-V-Mo series intermetallic compound is (at least containing the intermetallic of Al, Fe, V and Mo present in the matrix of material
Object) average equivalent circular diameter (μm).It is somebody's turn to do " the average equivalent circular diameter (μm) of intermetallic compound ", is squeezed from obtained aluminium alloy
Press the central portion (centre halve position) in the direction L (length direction, that is, axis direction) of material (cylindrical body) cut long 10mm ×
The sample strip is used cross-section samples producing device (Cross by the structure observation sample strip of wide 10mm × thickness 10mm size
Section polisher) carry out micro- grinding, the SEM photograph (scanning electron microscopy of the sample strip after shooting the micro- grinding
Mirror photo), the average equivalent circular diameter (μm) of (evaluation) intermetallic compound is found out from the photograph image.It finds out about above-mentioned
Visual field 1.5815mm in SEM photograph2Range present in 10 Al-Fe-V-Mo series intermetallic compounds averagely work as
Measure circular diameter.
The tensile strength evaluation assessment > of < at high temperature
Obtained aluminium alloy extruded product (cylindrical body) is processed into distance (gauge length) 20mm, parallel portion diameter between punctuate
The tensile sample of 4mm, and the high temperature tension test of the tensile sample is carried out, Testing Tensile Strength at Elevated Temperature is thus determined (at 260 DEG C
Tensile strength).It is by drawing by high temperature sample after 260 DEG C are kept for 100 hours, at 260 DEG C about above-mentioned high temperature tension test
Determination of the environment under tested.It is evaluated based on following determinating references.
(determinating reference)
The tensile strength of " ◎ " ... at 260 DEG C is 356MPa or more；
Tensile strength of the "○" ... at 260 DEG C is 351MPa or more and 355MPa or less；
The tensile strength of " △ " ... at 260 DEG C is 346MPa or more and 350MPa or less；
Tensile strength of the "×" ... at 260 DEG C is 345MPa or less.
The fatigue test method > of < at high temperature
Obtained aluminium alloy extruded product (cylindrical body) is processed into distance (gauge length) 30mm, parallel portion diameter between punctuate
The fatigue testing specimen of 8mm, and the fatique testing at elevated temperature of the fatigue testing specimen is carried out, high temperature fatigue strength is thus determined (at 260 DEG C
Fatigue strength).It is by fatigue testing specimen after 260 DEG C are kept for 100 hours, in 260 DEG C of survey about above-mentioned fatique testing at elevated temperature
Determine to have carried out 500000 tests under environment with the condition of circulation rate 3600rpm.It is evaluated based on following determinating references.
(determinating reference)
The fatigue strength of " ◎ " ... at 260 DEG C is 226MPa or more；
Fatigue strength of the "○" ... at 260 DEG C is 221MPa or more and 225MPa or less；
The fatigue strength of " △ " ... at 260 DEG C is 216MPa or more and 220MPa or less；
Fatigue strength of the "×" ... at 260 DEG C is 215MPa or less.
The creep testing > of < at high temperature
Obtained aluminium alloy extruded product (cylindrical body) is processed into distance (gauge length) 30mm, parallel portion diameter between punctuate
The creep sample of 6mm, and the high-temerature creep test of the creep sample is carried out, High-Temperature Creep Performance is thus determined (at 260 DEG C
Creep properties).It is tested about above-mentioned high-temerature creep, is by creep sample after 260 DEG C are kept for 100 hours, in 260 DEG C of survey
Determine to be tested under environment.Creep rupture strength under conditions of 260 DEG C of temperature, rupture time 300 hours is calculated, is based on down
Determinating reference is stated to evaluate.
(determinating reference)
The creep rupture strength of " ◎ " ... at 260 DEG C is 216MPa or more；
Creep rupture strength of the "○" ... at 260 DEG C is 211MPa or more and 215MPa or less；
The creep rupture strength of " △ " ... at 260 DEG C is 206MPa or more and 210MPa or less；
Creep rupture strength of the "×" ... at 260 DEG C is 205MPa or less.
From show really it is found that embodiment 1~18 of the present invention aluminium alloy extruded product, under high temperature (260 DEG C)
Various mechanical properties are excellent.
In contrast, departing from the aluminium alloy extruded product of the comparative example 1~14 of prescribed limit of the invention, in high temperature
Mechanical properties under (260 DEG C).
Industrial availability
Al alloy powder of the present invention is used and is formed using the Al alloy powder that the manufacturing method of the present invention obtains
Aluminum alloy materials, mechanical property at high temperature are excellent.Moreover, it relates to aluminium alloy extruded product, using the present invention
The obtained aluminium alloy extruded product of manufacturing method, mechanical property at high temperature is excellent, therefore can be used as vapour with being well suited for
The turbo-compressor impeller of turbocharger used in the internal combustion engine of vehicle etc. etc., internal combustion engine at high temperature rotate at high speed
Component (internal combustion engine component) etc..
The application is preferential based on patent application 2018-71463 requirement proposed on April 3rd, 2018 in Japan
Power, the disclosure of which constitute part of this application as former state.
Term as used herein and explanation are the embodiments being related to illustrate the invention and are used, and the present invention is simultaneously
It is not limited by it.About the present invention, just also allow to appoint without departing from its spirit if in the range of requesting patent protection
Change in what design.
Claims (7)
1. a kind of Al alloy powder, which is characterized in that contain Fe:5.0 mass mass %, the V:0.1 mass of %~9.0 %~3.0
Quality %, Mo:0.1 mass mass %, Zr:0.1 mass mass %, the Ti:0.02 mass matter of %~2.0 of %~2.0 of %~3.0
Measure %, containing respectively 1 in Cr and Mn kind of 0.02 mass of mass %~2.0 % or two kinds of metals, surplus by Al and
Inevitable impurity is constituted,
Contain Al-Fe series intermetallic compound in the Al alloy powder, in the section structure structure of the Al alloy powder
In, range that the average equivalent circular diameter of the Al-Fe series intermetallic compound is 0.1 μm~3.0 μm.
2. Al alloy powder according to claim 1, the aluminium alloy also contains 0.0001 mass of mass %~0.03 %
B.
3. a kind of manufacturing method of Al alloy powder, which is characterized in that enable aluminum alloy to melt using atomization and be quenched and solidified and powder
Endization, to obtain Al alloy powder, the molten aluminium alloy contains Fe:5.0 mass mass %, the V:0.1 mass of %~9.0 %
~3.0 mass %, Mo:0.1 mass mass %, Zr:0.1 mass mass %, the Ti:0.02 mass of %~2.0 of %~3.0 %~
2.0 mass %, containing respectively 1 in Cr and Mn kind of 0.02 mass of mass %~2.0 % or two kinds of metals, surplus by
Al and inevitable impurity are constituted.
4. a kind of aluminium alloy extruded product, which is characterized in that containing Fe:5.0 mass mass %, the V:0.1 mass of %~9.0 %~
3.0 mass %, Mo:0.1 mass mass %, Zr:0.1 mass mass %, the Ti:0.02 mass of %~2.0 of %~3.0 %~2.0
Quality %, containing respectively 1 in Cr and Mn kind of 0.02 mass of mass %~2.0 % or two kinds of metals, surplus is by Al
It is constituted with inevitable impurity,
Contain Al-Fe series intermetallic compound in the aluminium alloy extruded product, in the section of the aluminium alloy extruded product
In institutional framework, range that the average equivalent circular diameter of the Al-Fe series intermetallic compound is 0.1 μm~3.0 μm.
5. aluminium alloy extruded product according to claim 4, the aluminium alloy extruded product also contains 0.0001 mass %
The B of~0.03 mass %.
6. aluminium alloy extruded product according to claim 4 or 5, the intermetallic compound is at least to contain Al, Fe, V
With the Al-Fe-V-Mo series intermetallic compound of Mo,
The containing ratio of Al in the intermetallic compound is that the containing ratio of 81.60 mass of mass %~92.37 %, Fe is 2.58
The containing ratio that the containing ratio of the mass of quality %~10.05 %, V are 1.44 mass of mass %~4.39 %, Mo is 2.45 mass %
~3.62 mass %.
7. a kind of manufacturing method of aluminium alloy extruded product characterized by comprising
By Al alloy powder compression molding of any of claims 1 or 2 to obtain the compression molding process of powder compact；With
To powder compact progress hot extrusion to obtain the extrusion process of extrded material,
Contain Al-Fe series intermetallic compound in the extrded material, in the section structure structure of the extrded material,
The range that the average equivalent circular diameter of the Al-Fe series intermetallic compound is 0.1 μm~3.0 μm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-071463 | 2018-04-03 | ||
| JP2018071463A JP7033481B2 (en) | 2018-04-03 | 2018-04-03 | Aluminum alloy powder and its manufacturing method, aluminum alloy extruded material and its manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110343910A true CN110343910A (en) | 2019-10-18 |
Family
ID=68057587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910255179.8A Pending CN110343910A (en) | 2018-04-03 | 2019-04-01 | Al alloy powder and its manufacturing method, aluminium alloy extruded product and its manufacturing method |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20190299296A1 (en) |
| JP (1) | JP7033481B2 (en) |
| CN (1) | CN110343910A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113322400A (en) * | 2020-02-28 | 2021-08-31 | 株式会社神户制钢所 | Aluminum alloy forged material and method for producing same |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7118705B2 (en) | 2018-04-03 | 2022-08-16 | 株式会社豊田自動織機 | Compressor part for transportation machine made of aluminum alloy with excellent mechanical properties at high temperature and method for manufacturing the same |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2951262B2 (en) * | 1996-03-13 | 1999-09-20 | 三菱重工業株式会社 | Aluminum alloy with excellent high-temperature strength |
| JP3702044B2 (en) * | 1996-07-10 | 2005-10-05 | 三菱重工業株式会社 | Aluminum alloy impeller and manufacturing method thereof |
| JP2000225412A (en) | 1999-02-05 | 2000-08-15 | Sumitomo Light Metal Ind Ltd | Method for plastically working aluminum alloy and high- strength/high-ductility aluminum alloy worked by the same |
| JP6670635B2 (en) | 2016-02-29 | 2020-03-25 | 昭和電工株式会社 | Aluminum alloy atomized powder for extruded material, method for producing aluminum alloy atomized powder for extruded material, method for producing extruded material, method for producing forged product |
| JP7118705B2 (en) | 2018-04-03 | 2022-08-16 | 株式会社豊田自動織機 | Compressor part for transportation machine made of aluminum alloy with excellent mechanical properties at high temperature and method for manufacturing the same |
-
2018
- 2018-04-03 JP JP2018071463A patent/JP7033481B2/en active Active
-
2019
- 2019-04-01 CN CN201910255179.8A patent/CN110343910A/en active Pending
- 2019-04-03 US US16/374,044 patent/US20190299296A1/en not_active Abandoned
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113322400A (en) * | 2020-02-28 | 2021-08-31 | 株式会社神户制钢所 | Aluminum alloy forged material and method for producing same |
Also Published As
| Publication number | Publication date |
|---|---|
| US20190299296A1 (en) | 2019-10-03 |
| JP2019183191A (en) | 2019-10-24 |
| JP7033481B2 (en) | 2022-03-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2475794B1 (en) | Aluminum alloy casting and production method thereof | |
| US4135922A (en) | Metal article and powder alloy and method for producing metal article from aluminum base powder alloy containing silicon and manganese | |
| EP0265307B1 (en) | Process for manufacturing shaped bodies from hypereutectic aluminium-silicon alloys, starting from powders obtained by rapid cooling | |
| JPWO2011002082A1 (en) | Manufacturing method of engine piston profile | |
| CN111065754A (en) | Compressor component for conveyor and manufacturing method thereof | |
| JP2007092117A (en) | Aluminum alloy with high strength and low specific gravity | |
| EP3170594B1 (en) | Aluminum alloy powder for hot forging of sliding component, method of producing the same, aluminum alloy forged product for sliding component, and method of producing the same | |
| CN110343910A (en) | Al alloy powder and its manufacturing method, aluminium alloy extruded product and its manufacturing method | |
| JP6738212B2 (en) | Aluminum alloy forged product and manufacturing method thereof | |
| CN109593992A (en) | Al alloy powder and its manufacturing method, aluminium alloy extruded product and its manufacturing method | |
| EP1905856B1 (en) | Al base alloy excellent in heat resistance, workability and rigidity | |
| US6962673B2 (en) | Heat-resistant, creep-resistant aluminum alloy and billet thereof as well as methods of preparing the same | |
| JP5689423B2 (en) | Manufacturing method of engine piston profile | |
| JPH0617550B2 (en) | Method for producing aluminum alloy materials with improved fatigue strength, especially bar stock | |
| JP7118705B2 (en) | Compressor part for transportation machine made of aluminum alloy with excellent mechanical properties at high temperature and method for manufacturing the same | |
| JPH07197164A (en) | Aluminum alloy having high strength and high workability and its production | |
| JP2020007594A (en) | Aluminum alloy material, manufacturing method of aluminum alloy cast material, and manufacturing method of aluminum alloy powder extrusion material | |
| JP2019026859A (en) | Aluminum alloy forging article for high speed moving component, and manufacturing method therefor | |
| JP2017214870A (en) | Piston for internal combustion engine and method of manufacturing the same | |
| JP3151590B2 (en) | High fatigue strength Al alloy | |
| Lozares et al. | Semisolid forging of 250 automotive spindles of S48C steel | |
| JPH11269592A (en) | Aluminum-hyper-eutectic silicon alloy low in hardening sensitivity, and its manufacture | |
| JPH07305132A (en) | High elasticity aluminum alloy excellent in toughness | |
| JP2672834B2 (en) | Aluminum alloy member with high strength and excellent forgeability | |
| JP3605494B2 (en) | High fatigue strength Al alloy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20191018 |
|
| WD01 | Invention patent application deemed withdrawn after publication |