WO2005054529A1 - 耐熱・高靱性アルミニウム合金およびその製造方法ならびにエンジン部品 - Google Patents
耐熱・高靱性アルミニウム合金およびその製造方法ならびにエンジン部品 Download PDFInfo
- Publication number
- WO2005054529A1 WO2005054529A1 PCT/JP2004/017949 JP2004017949W WO2005054529A1 WO 2005054529 A1 WO2005054529 A1 WO 2005054529A1 JP 2004017949 W JP2004017949 W JP 2004017949W WO 2005054529 A1 WO2005054529 A1 WO 2005054529A1
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- WIPO (PCT)
- Prior art keywords
- mass
- less
- aluminum alloy
- heat
- resistant
- Prior art date
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Classifications
-
- 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
-
- 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
- B22F3/12—Both compacting and sintering
- B22F3/16—Both compacting and sintering in successive or repeated steps
- B22F3/162—Machining, working after consolidation
-
- 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
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
-
- 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
- C22F1/043—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 of alloys with silicon as the next major constituent
-
- 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
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
-
- 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
Definitions
- the present invention relates to a heat-resistant and high-toughness aluminum alloy, a method for producing the same, and an engine component, and more particularly to a rapid solidification method that is most suitable as a material for an automobile engine component requiring heat resistance and toughness, particularly as a material for a piston. It relates to the heat resistant and high toughness aluminum alloy used.
- Patent Document 1 discloses a heat-resistant rapidly solidified aluminum alloy based on A1 (aluminum) -Si (silicon) transition metal. This publication states that 10-30 mass% of Si, 11-5 mass% of Ti (titanium), 3-10 mass% of at least one of Fe (iron) and Ni (nickel), and 0% of Mg (magnesium). 0 5- 1. Contains Omass%, with the balance substantially producing A1 force, the average crystal grain size of Si is 2 m or less, and the average grain size of intermetallic compound phases other than Si is 1 ⁇ m or less An aluminum alloy is shown.
- Patent Document 1 JP-A-11 293374
- the aluminum alloy disclosed in the above publication has high heat resistance and high wear resistance, and is therefore used as a suitable material for engine parts and the like.
- engine parts, especially pistons are required to have higher strength, higher toughness, lower specific gravity, lighter weight and higher durability.
- higher strength, higher toughness, lower specific gravity, lighter weight and higher durability are required to have higher strength, higher toughness, lower specific gravity, lighter weight and higher durability.
- an object of the present invention is to balance the strength and ductility from room temperature to about 300 ° C.
- An object of the present invention is to provide a heat-resistant and high-toughness aluminum alloy, a method for producing the same, and an engine component, which have high fracture and fracture toughness.
- the heat-resistant and high-toughness aluminum alloy of the present invention comprises 10 mass% to 16 mass% silicon, lmass% to 3 mass% iron, lmass% to 2 mass% nickel, titanium, zirconium (Zr), chromium ( A group strength consisting of Cr) and vanadium (V) is also selected.One or more of them are in a total amount of 0.5 mass% or more and 2 mass% or less, copper (Cu) is 0.6 mass% or more and 3 mass% or less, and magnesium is 0.2 mass% or more. Not more than 2 mass%, the balance being substantially aluminum power, obtained by densifying an aluminum alloy powder produced by gas atomization, and having an average crystal grain size force of silicon m or less. It is a feature.
- titanium is contained in an amount of 0.5111 & 33% or more and 2% by mass or less.
- the heat-resistant and high-toughness aluminum alloy is used.
- -Pum alloy has a density of 2.8MgZm 3 or less.
- the engine component of the present invention is manufactured by hot plastic working of any of the above heat-resistant 'high-toughness aluminum alloys.
- the engine component is preferably a piston.
- One of the heat-resistant and high-toughness aluminum alloy production methods of the present invention is as follows: silicon is 10 mass% to 16 mass%, iron is lmass% to 3 mass%, nickel is lmass% to 2 mass%, titanium and zirconium. , Containing at least 0.5 mass% or more and 2 mass% or less in total, and at least 0.6 mass% or more and 3 mass% or less of magnesium, and 0.2 mass% or more and 2 mass% or less of magnesium, A step of producing an aluminum alloy powder having a composition substantially consisting of an aluminum alloy by gas atomization, a step of cold-forming the aluminum alloy powder to obtain a preformed body, and a step of the preforming.
- Another heat-resistant and high-toughness aluminum alloy manufacturing method of the present invention is as follows: silicon is 10 mass% to 16 mass%, iron is lmass% to 3 mass%, nickel is lmass% to 2 mass%, titanium, zirconium.
- a step of producing an aluminum alloy powder having a composition substantially consisting of an aluminum alloy by gas atomization a step of forming the aluminum alloy powder in a cold state to obtain a preformed body, and a step of the preforming After heating the body to a temperature of 400 ° C or more and 510 ° C or less, maintaining it in that temperature range for 5 hours or less, and densifying the heated preformed body by hot plastic working And the dense body, A step of heating to a temperature below the heating temperature of the preformed body to perform hot plastic working, thereby making it possible to produce an aluminum alloy so that the average crystal grain size of silicon is 4 ⁇ m or less. It is a feature.
- the step of hot plastic working the heated preformed body includes extruding at an extrusion ratio of 6 or more.
- the inventors of the present application made aluminum alloy powder having a predetermined composition by gas atomization and then densified the aluminum alloy powder, thereby achieving a balance between strength and ductility from room temperature to about 300 ° C and high fracture toughness. It has been found that a heat-resistant, high-toughness aluminum alloy can be obtained. Such aluminum alloys are ideal for automotive engine components such as pistons.
- silicon is important for improving heat resistance while maintaining low specific gravity.
- the reason why the content of silicon is set to 10 mass% or more and 16 mass% or less is that if this content is less than 10 mass%, the strength at high temperatures becomes low, and if it exceeds 16 mass%, the elongation and impact value at high temperatures become low. It is.
- Iron is important for improving heat resistance. The reason why the iron content is set to lmass% or more and 3 mass% or less is that if this content is less than lmass%, the strength at high temperatures decreases, and if it exceeds 3 mass%, the elongation and impact value at high temperatures decrease. That's why.
- Nickel is important for improving heat resistance. The reason why the nickel content is set to lmas s% or more and 2 mass% or less is that if this content is less than lmass%, the strength at high temperatures decreases, and if it exceeds 2 mass%, the elongation at high temperatures, the elongation at room temperature, and the impact value Is low.
- one or more of titanium, zirconium, chromium, and vanadium form an intermetallic compound with aluminum and serve as nuclei for crystal formation, thereby miniaturizing the structure and improving the strength.
- the reason why the total content of at least one of titanium, zirconium, chromium, and vanadium is set to 0.5 mass% or more and 2 mass% or less is that when the content is less than 0.5 mass%, the strength at high temperature and the strength at room temperature are reduced. The elongation at high temperature, the elongation at room temperature, and the impact value are reduced when the content exceeds 2 mass%.
- copper is important for improving strength by aging precipitation hardening in a temperature range from room temperature to around 200 ° C.
- the reason why the content of copper is 0.6 mass% or more and 3 mass% or less is that if this content is less than 0.6 mass%, the strength at high temperature and the strength at room temperature are low, and if it exceeds 3 mass%, the impact value is exceeded. Is lower and the density is higher.
- Magnesium (Mg) has the same effect as copper. Therefore, the reason why the magnesium content is set to 0.2 mass% or more and 2 mass% or less is that if this content is less than 0.2 mass%, the strength at room temperature is low, and if it exceeds 2 mass%, the impact value and the elongation at room temperature are reduced. Is low.
- the engine component of the present invention is manufactured by hot plastic working of any of the above heat-resistant 'high-toughness aluminum alloys, it satisfies strength, toughness, low specific gravity, and is lightweight. Has excellent durability.
- the strength at room temperature and the strength and ductility up to about 300 ° C are balanced, and the fracture toughness is high.
- Aluminum alloy can be manufactured. Further, the reason why the dense body is heated at a temperature equal to or lower than the heating temperature of the preformed body and subjected to hot plastic working is to prevent a decrease in ductility.
- the toughness can be improved by extruding at an extrusion ratio of 6 or more.
- FIG. 1 is a flow chart showing a first example of a method for producing a heat-resistant and high-toughness aluminum alloy according to one embodiment of the present invention.
- FIG. 2 is a flowchart showing a second example of the method for producing a heat-resistant and high-toughness aluminum alloy according to one embodiment of the present invention.
- FIG. 3 is a front view showing a tensile test piece.
- FIG. 4 is a front view (a), a cross-sectional view (b), and an enlarged view (c) of a notch portion of an impact test piece.
- the heat-resistant and high-toughness aluminum alloy includes silicon having a mass of 10 mass% to 16 mass%, iron having a mass of 3 mass% or less, nickel having a mass of 2 mass% or less, titanium and zirconium. , And at least one of chromium and vanadium in a total amount of 0.5 mass% or more and 2 mass% or less, copper of 0.6 mass% or more and 3 mass% or less, and magnesium of 0.2 mass% or more and 2 mass% or less, with the balance being substantial It has a composition that also has aluminum power.
- the heat-resistant and high-toughness aluminum alloy of the present embodiment is obtained by densifying an aluminum alloy powder produced by gas atomization, and has an average crystal grain size of silicon of 4 ⁇ m or less.
- the heat-resistant and high-toughness aluminum alloy of the present embodiment preferably contains titanium in an amount of 0.5111 & 33% to 2 mass%.
- the heat resistance of this embodiment The conductive aluminum alloy preferably has a density of 2.8 MgZm 3 or less.
- a piston is manufactured by hot plastic working the heat-resistant and high-toughness aluminum alloy of the present embodiment.
- FIG. 1 is a flow chart showing a first example of a method for producing a heat-resistant and high-toughness aluminum alloy according to one embodiment of the present invention.
- a molten metal having a predetermined composition is prepared (step Sl).
- the composition of this molten metal is 10 mass% or more and 16111 & 55% or less for silicon, lmass% or more and 3mass% or less for iron, lmass% or more and 2mass% or less for nickel, and at least one of titanium, zirconium, chromium, and vanadium.
- the composition contains 5 mass% or more and 2 mass% or less, copper is 0.6 mass% or more and 3 mass% or less, magnesium is 0.2 mass% or more and 2 mass% or less, and the balance is substantially aluminum power. Further, it is preferable that titanium is contained at 0.5 mass% or more and 2 mass% or less!
- the molten metal is air-atomized as gas atomization, and an aluminum-powder alloy powder is produced from the molten metal (step S2).
- the aluminum alloy powder is subjected to compression molding in a cold state to produce a preform (Step S3).
- the preformed body is heated to a temperature of 400 ° C. or more and 510 ° C. or less in an atmosphere furnace, the temperature is kept within the temperature range for 5 hours or less (step S4).
- the heated preformed body is densified by hot plastic working to produce a dense body (step S5).
- the hot plastic working of the preform is preferably, for example, an extrusion at an extrusion ratio of 6 or more.
- the dense body After the dense body is cut or the like, it is heated to a temperature lower than the heating temperature of the preformed body (a temperature of 400 ° C. or more and 510 ° C. or less) and is subjected to hot plastic working (step S6).
- a temperature lower than the heating temperature of the preformed body a temperature of 400 ° C. or more and 510 ° C. or less
- the heat-resistant and high-toughness aluminum alloy of the present embodiment is manufactured so that the average crystal grain size force of silicon is not more than m.
- step S7 Thereafter, it is cut into, for example, a shape as a test piece (step S7), and thereafter subjected to a material test (tensile test, Charpy impact test) described later (step S8).
- a material test tensile test, Charpy impact test
- FIG. 2 is a flowchart showing a second example of the method for producing a heat-resistant and high-toughness aluminum alloy according to one embodiment of the present invention.
- this method is different from the method shown in FIG. In comparison, the same steps are performed from step SI to step S5.
- step S5 the extruded material (densified body) densified by the extrusion method is cut (step Sl l).
- the cut extruded material is heated (step S12), subjected to a plastic kneading (upsetting) (step S13), and subjected to a heat treatment (step S14).
- Step S8 a material test (tensile test, Charpy impact test) described later. )
- FIG. 3 is a front view showing the tensile test piece 1
- FIGS. 4 (a), (b) and (c) are a front view, a cross-sectional view and an enlarged view of the notch portion 2a of the impact test piece 2.
- melts having the respective compositions shown in Table 3 below were prepared, and tensile test pieces and impact test pieces were prepared according to the flow shown in FIG.
- the shapes of the tensile test piece and the impact test piece were as shown in FIGS. 3 and 4.
- melts having the respective compositions shown in Table 5 below were prepared, and tensile test pieces and impact test pieces were prepared according to the flow shown in FIG.
- the shapes of the tensile test piece and the impact test piece were as shown in FIGS. 3 and 4.
- Table 6 shows the results. Table 6 also shows that the solidification temperature of the preform at the time of production of the test piece, the holding time after heating of the preform, the extrusion ratio of the heated preform, the solution temperature, It also shows the artificial aging temperature.
- Example No. 4 The material of Inventive Example No. 4 produced in Example 1 was subjected to hot plastic deformation according to the flow chart of Fig. 2. Test pieces having the shapes shown in Figs. 3 and 4 were cut out from the material, and the material properties were evaluated. Tables 7 and 8 show the manufacturing conditions and evaluation results.
- the heat-resistant and high-toughness aluminum alloy of the present invention is advantageously applied as a material for automobile engine parts requiring heat resistance and toughness, particularly as a material for pistons.
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- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Powder Metallurgy (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Extrusion Of Metal (AREA)
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Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/581,553 US20070158003A1 (en) | 2003-12-02 | 2004-12-02 | Heat-resistant, high-toughness aluminum alloy, method of manufacturing the same, and engine parts |
EP04819899A EP1690953B1 (en) | 2003-12-02 | 2004-12-02 | Heat-resistant and highly tough aluminum alloy and method for production thereof and engine parts |
DE602004023872T DE602004023872D1 (de) | 2003-12-02 | 2004-12-02 | Hitzebeständige und hochzähe aluminiumlegierung und herstellungsverfahren dafür und motorenteile |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003403082A JP4312037B2 (ja) | 2003-12-02 | 2003-12-02 | 耐熱・高靭性アルミニウム合金およびその製造方法ならびにエンジン部品 |
JP2003-403082 | 2003-12-02 |
Publications (1)
Publication Number | Publication Date |
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WO2005054529A1 true WO2005054529A1 (ja) | 2005-06-16 |
Family
ID=34650054
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/017949 WO2005054529A1 (ja) | 2003-12-02 | 2004-12-02 | 耐熱・高靱性アルミニウム合金およびその製造方法ならびにエンジン部品 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20070158003A1 (ja) |
EP (1) | EP1690953B1 (ja) |
JP (1) | JP4312037B2 (ja) |
DE (1) | DE602004023872D1 (ja) |
WO (1) | WO2005054529A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113528901A (zh) * | 2021-07-20 | 2021-10-22 | 重庆增隆新材料科技有限公司 | 一种增材制造用耐热铝合金球形粉体材料及其制备方法 |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4992677B2 (ja) * | 2007-11-08 | 2012-08-08 | Jfeスチール株式会社 | 線材の超音波疲労試験片の製造方法 |
JP4992676B2 (ja) * | 2007-11-08 | 2012-08-08 | Jfeスチール株式会社 | 線材の超音波疲労試験片の製造方法 |
WO2010042498A1 (en) * | 2008-10-10 | 2010-04-15 | Gkn Sinter Metals, Llc | Aluminum alloy powder metal bulk chemistry formulation |
CN105234412B (zh) * | 2014-07-11 | 2017-07-18 | 东睦新材料集团股份有限公司 | 一种粉末冶金铝合金相位器转子的制备方法 |
CN105234411B (zh) * | 2014-07-11 | 2017-07-18 | 东睦新材料集团股份有限公司 | 一种粉末冶金制相位器转子的制备方法 |
CN110885941B (zh) * | 2019-12-30 | 2021-05-18 | 南京南超模具装备有限公司 | 高韧性铝合金材料及其制备方法 |
CN112375942B (zh) * | 2020-10-26 | 2022-02-22 | 宁波德业粉末冶金有限公司 | 一种复合式智能减震器活塞 |
CN112746200A (zh) * | 2020-12-29 | 2021-05-04 | 中南大学 | 一种弥散强化高硅铝合金及其制备方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS6283444A (ja) * | 1985-10-04 | 1987-04-16 | Alum Funmatsu Yakin Gijutsu Kenkyu Kumiai | 耐熱耐摩耗性アルミニウム合金 |
JPS63192838A (ja) * | 1987-02-04 | 1988-08-10 | Showa Denko Kk | 耐クリ−プ特性に優れたアルミニウム合金粉末成形体 |
JPH0748601A (ja) * | 1993-08-03 | 1995-02-21 | Sumitomo Electric Ind Ltd | 高硬度耐摩耗性アルミニウム粉末合金およびその製造方法 |
JP2003277867A (ja) * | 2002-03-27 | 2003-10-02 | Nippon Light Metal Co Ltd | 高温強度の優れたアルミニウム粉末合金及び内燃機関用ピストンの製造方法並びに内燃機関用ピストン |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5851320A (en) * | 1996-01-05 | 1998-12-22 | Norsk Hydro, A. S. | Wear-resistant aluminum alloy and compressor piston formed therefrom |
GB2332448B (en) * | 1997-12-20 | 2002-06-26 | Ae Goetze Automotive Ltd | Aluminium alloy |
JPH11293374A (ja) * | 1998-04-10 | 1999-10-26 | Sumitomo Electric Ind Ltd | 耐熱耐摩耗性アルミニウム合金およびその製造方法 |
-
2003
- 2003-12-02 JP JP2003403082A patent/JP4312037B2/ja not_active Expired - Fee Related
-
2004
- 2004-12-02 US US10/581,553 patent/US20070158003A1/en not_active Abandoned
- 2004-12-02 DE DE602004023872T patent/DE602004023872D1/de active Active
- 2004-12-02 EP EP04819899A patent/EP1690953B1/en not_active Expired - Fee Related
- 2004-12-02 WO PCT/JP2004/017949 patent/WO2005054529A1/ja active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6283444A (ja) * | 1985-10-04 | 1987-04-16 | Alum Funmatsu Yakin Gijutsu Kenkyu Kumiai | 耐熱耐摩耗性アルミニウム合金 |
JPS63192838A (ja) * | 1987-02-04 | 1988-08-10 | Showa Denko Kk | 耐クリ−プ特性に優れたアルミニウム合金粉末成形体 |
JPH0748601A (ja) * | 1993-08-03 | 1995-02-21 | Sumitomo Electric Ind Ltd | 高硬度耐摩耗性アルミニウム粉末合金およびその製造方法 |
JP2003277867A (ja) * | 2002-03-27 | 2003-10-02 | Nippon Light Metal Co Ltd | 高温強度の優れたアルミニウム粉末合金及び内燃機関用ピストンの製造方法並びに内燃機関用ピストン |
Non-Patent Citations (1)
Title |
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See also references of EP1690953A4 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113528901A (zh) * | 2021-07-20 | 2021-10-22 | 重庆增隆新材料科技有限公司 | 一种增材制造用耐热铝合金球形粉体材料及其制备方法 |
CN113528901B (zh) * | 2021-07-20 | 2022-03-29 | 重庆增隆新材料科技有限公司 | 一种增材制造用耐热铝合金球形粉体材料及其制备方法 |
Also Published As
Publication number | Publication date |
---|---|
DE602004023872D1 (de) | 2009-12-10 |
JP2005163100A (ja) | 2005-06-23 |
EP1690953A4 (en) | 2008-02-13 |
EP1690953A1 (en) | 2006-08-16 |
JP4312037B2 (ja) | 2009-08-12 |
EP1690953B1 (en) | 2009-10-28 |
US20070158003A1 (en) | 2007-07-12 |
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