CN109628780A - A kind of automotive light weight technology aluminum matrix composite and preparation method thereof - Google Patents
A kind of automotive light weight technology aluminum matrix composite and preparation method thereof Download PDFInfo
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- CN109628780A CN109628780A CN201910035399.XA CN201910035399A CN109628780A CN 109628780 A CN109628780 A CN 109628780A CN 201910035399 A CN201910035399 A CN 201910035399A CN 109628780 A CN109628780 A CN 109628780A
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- 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
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- 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
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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- 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
- C22C21/04—Modified aluminium-silicon alloys
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- 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
Abstract
The present invention provides a kind of automotive light weight technology aluminum matrix composite and preparation method thereof, belongs to metal-base composites technical field.The composite material in parts by weight, is made of following raw materials according: 700-710 parts of Al-20Si intermediate alloy, 103-106 parts of technical pure Mg and 29-31 parts of Cu-14P intermediate alloy, and wherein primary phase is Mg in composite material2Si, the mass percent for accounting for composite material is 20%.The present invention also provides a kind of preparation methods of automotive light weight technology aluminum matrix composite.Microstructure of composite form of the present invention is good, good mechanical performance, the composite density is far below orthodox car engine cylinder and cylinder cover material, and weight loss effect is obvious, can be work perfectly well as lightweight composite material applied on the components such as Motor Engine Cylinder and cylinder sleeve.
Description
Technical field
The invention belongs to metal-base composites technical fields, and in particular to a kind of automotive light weight technology aluminum matrix composite and
Preparation method.
Background technique
Automotive light weight technology is important channel and the effective measures of vehicle energy saving sum.It is demonstrated experimentally that car mass reduces half,
Fuel consumption can also reduce nearly half.Currently, due to environmental protection and energy-efficient needs, the lightweight of automobile has become world's vapour
The trend of vehicle development.The ever-increasing impetus is presented in China's auto output and ownership in recent years, causes energy consumption, safety and environmental protection
Problem is increasingly serious.In order to solve above-mentioned three major issues, automobile industry sustainable development is promoted, automotive light weight technology has been mentioned state
Family's strategic height, the common concern by government and industry.Automotive light weight technology not only will be auto parts loss of weight, Er Qieyao
The comprehensive performances such as power performance and the security performance of automobile are improved, finally realize energy-saving and emission-reduction.
Domestic auto parts and components (such as cylinder sleeve of automobile aluminum cylinder castingin) mostly use cast iron to manufacture.Due to aluminium alloy with
Cast iron thermal expansion coefficient difference is larger, and Cast iron liner is coated by aluminium alloy around, and cylinder barrel temperature increases the latter two when work
Between fitting intensity decline, cylinder sleeve is easily deformed, and poor thermal conductivity influences engine performance.According to aluminium alloy expansion rate phase
Close aluminum matrix composite cylinder sleeve, can not only improve its dimensional stability and thermal conductivity, the deformation for reducing cylinder barrel, reduce noise and
Friction loss improves engine power, and each cylinder sleeve 60% or more loss of weight and can improve its wearability.Mg2Si particle increases
Strong aluminum matrix composite is a kind of very promising automotive light weight technology composite material, is prepared frequently with the method for gravitational casting, but
The Mg that the method obtains2Si primary phase be it is coarse with angular dendrite, to the matrix effect of isolating, therefore seriously affect
The mechanical property of composite material, to promoting and practical application is very unfavorable.
Summary of the invention
The object of the present invention is to provide a kind of automotive light weight technology aluminum matrix composites and preparation method thereof, and of the invention is compound
Material weight loss effect is good, and excellent in mechanical performance.
Present invention firstly provides a kind of automotive light weight technology aluminum matrix composite, the composite material in parts by weight, by
Following raw materials according is made:
700-710 parts of Al-20Si intermediate alloy, 103-106 parts of technical pure Mg and 29-31 parts of Cu-14P intermediate alloy,
Primary phase is Mg in middle composite material2Si, the mass percent for accounting for composite material is 20%；
The Al-20Si intermediate alloy is according to mass percent, including Si:18-20.1%, Mn:0.2-0.25%, Cr:
0.01-0.04%, Fe:0.4-0.8%, Zn:0.01-0.02%, Ni:0.001-0.003%, surplus are Al；
The technical pure Mg is according to mass percent, including Si:0.003-0.006%, Mn:0.001-0.005%, Cr:
0.002-0.005%, Fe:0.001-0.004%, Zn:0.004-0.008%, Ni:0.001-0.004%, Cu:0.001-
0.003%, Al:0.001-0.004%, surplus are Mg；
The Cu-14P intermediate alloy is alterant, and the additional amount of P is the 0.5% of composite material total amount.
Preferably, the Al-20Si intermediate alloy is according to mass percent, including Si:20%, Mn:
0.230%, Cr:0.036%, Fe:0.8%, Zn:0.012%, Ni:0.001%, surplus are Al.
Preferably, the technical pure Mg is according to mass percent, including Si:0.005%, Mn:0.001%, Cr:
0.002%, Fe:0.001%, Zn:0.006%, Ni:0.001%, Cu:0.001%, Al:0.002%, surplus are Mg.
The present invention also provides a kind of preparation methods of automotive light weight technology composite material, comprising:
(1) graphite crucible is placed in resistance furnace, is warming up to 190-210 DEG C, Al-20Si intermediate alloy is put into crucible
In, continuing to be warming up to 760-780 DEG C is completely melt alloy, cools to 700-720 DEG C after keeping the temperature 5-10min, obtains stand-by
Al-20Si alloy melt；
(2) in the Al-20Si alloy melt that indentation step (1) obtains after preheating the pure Mg of technique that aluminium foil coats, heating
After keep the temperature, after pure Mg is completely melt, refining slagging-off, obtain melt；
(3) it is warming up to 730-750 DEG C, the Cu-14P intermediate alloy after preheating is added in the melt of step (2), is kept the temperature
After be poured, obtain casting sample；
(4) being put into resistance furnace for casting sample that step (3) obtains is heated, in 565-570 DEG C of heat preservation 50-
100min obtains pre-extrusion sample；
(5) step (4) is obtained into pre-extrusion sample and is put into extrusion die extruding and pressure maintaining under the conditions of 250-255Mpa
30-35s obtains automotive light weight technology composite material.
Preferably, the preheating temperature in the step (2) is 280-300 DEG C, preheating time 30-40min.
Preferably, the step (2) is warming up to 780-800 DEG C of heat preservation.
Preferably, the soaking time of the step (3) is 15-20min.
Preferably, the casting sample of the step (3) is the cylindrical gravitational casting examination that diameter dimension is 54-56mm
Sample.
Preferably, the step (4) is put into before resistance stove heating, first by the further processing of casting sample at 60-
70mm。
Preferably, the diameter of the automotive light weight technology composite material of the step (5) is 64-66mm.
Beneficial effects of the present invention
Present invention firstly provides a kind of automotive light weight technology aluminum matrix composite, which is made of following raw materials according: Al-
20Si intermediate alloy, technical pure Mg and Cu-14P intermediate alloy, wherein primary phase is Mg in composite material2Si accounts for composite material
Mass percent be 20%；The microstructure of composite form is good, and good mechanical performance, realizes aluminium to a certain extent
The Strengthening and Toughening of based composites, the composite density are far below orthodox car engine cylinder and cylinder cover material, loss of weight effect
Fruit is obvious, can be work perfectly well as lightweight composite material applied on the components such as Motor Engine Cylinder and cylinder sleeve.
The present invention also provides a kind of preparation method of automotive light weight technology aluminum matrix composite, this method uses semi-solid isothermal
Heat treatment combines the technological means of hot extrusion to be prepared for aluminum matrix composite, and this method is simple for process, advantage of lower cost,
Realize the low cost manufacturing of aluminum matrix composite；More importantly the method improve microstructure of composite and performance, it can
To be work perfectly well as lightweight composite material applied on automobile.
Detailed description of the invention
Fig. 1 is the microstructure picture figure for the automotive light weight technology aluminum matrix composite that the embodiment of the present invention 1 is prepared.
Specific embodiment
Present invention firstly provides a kind of automotive light weight technology aluminum matrix composites, in parts by weight, by following raw materials according system
At:
700-710 parts of Al-20Si intermediate alloy, Mg103-106 parts of technical pure and 29-31 parts of Cu-14P intermediate alloy,
Primary phase is Mg in middle composite material2Si, the mass percent for accounting for composite material is 20%；
The Al-20Si intermediate alloy is according to mass percent, including Si:18-20.1%, Mn:0.2-0.25%, Cr:
0.01-0.04%, Fe:0.4-0.8%, Zn:0.01-0.02%, Ni:0.001-0.003%, surplus are Al；It is preferred that are as follows: Si:
20%, Mn:0.230%, Cr:0.036%, Fe:0.8%, Zn:0.012%, Ni:0.001%, surplus are Al.
The technical pure Mg is according to mass percent, including Si:0.003-0.006%, Mn:0.001-0.005%, Cr:
0.002-0.005%, Fe:0.001-0.004%, Zn:0.004-0.008%, Ni:0.001-0.004%, Cu:0.001-
0.003%, Al:0.001-0.004%, surplus are Mg；It is preferred that are as follows: Si:0.005%, Mn:0.001%, Cr:0.002%, Fe:
0.001%, Zn:0.006%, Ni:0.001%, Cu:0.001%, Al:0.002%, surplus are Mg.
The Cu-14P intermediate alloy is alterant, and the additional amount of P is 14%, Zhan Fuhe of Cu-14P intermediate alloy total amount
The 0.5% of total amount of material, which, which plays, changes primary phase Mg2Size, form, quantity and the effect of distribution of Si.
The present invention also provides a kind of preparation methods of automotive light weight technology composite material, comprising:
(1) graphite crucible is placed in resistance furnace and is heated to 190-210 DEG C, preferably 200 DEG C, among Al-20Si
Alloy, which is put into crucible, which to be continued to be warming up to 760-780 DEG C, is completely melt alloy, keeps the temperature and cools to 700-720 DEG C after 5-10min, excellent
710 DEG C are selected as, Al-20Si alloy melt is obtained；
(2) in the Al-20Si alloy melt that indentation step (1) obtains after preheating the pure Mg of technique that aluminium foil coats, preferably
It is warming up to 780-800 DEG C of heat preservation, the soaking time is preferably 10min, and after pure Mg is completely melt, refining slagging-off is obtained
Melt；The pure Mg preheating temperature of the technique is preferably 280-300 DEG C, and preheating time is preferably 30-40min；
(3) it is warming up to 730-750 DEG C, the Cu-14P intermediate alloy after preheating is added in the melt of step (2), is kept the temperature
After be poured, obtain casting sample；The soaking time is preferably 15-20min；More preferably 20min；The casting
Sample is preferably the cylindrical gravitational casting sample that diameter dimension is 54-56mm；
(4) the highly preferred of casting sample that step (3) obtains is processed into 60-70mm, be then placed in resistance furnace
Heating, in 565-570 DEG C of heat preservation 50-100min, more preferably in 565 DEG C of heat preservation 60min, obtains pre-extrusion sample；
(5) step (4) is obtained into pre-extrusion sample and is put into extrusion die extruding and pressure maintaining under the conditions of 250-255Mpa
Simultaneously pressure maintaining 35s is squeezed under the conditions of 30-35s, more preferably 255Mpa, obtains automotive light weight technology composite material, the automobile is light
The diameter of quantized composite material is preferably 64-66mm.
The present invention is described further below with reference to embodiment, the raw material being related in embodiment
The pure Mg and Cu-14P alloy of Al-20Si, technique is commercial prod.
Embodiment 1
A kind of automotive light weight technology aluminum matrix composite, the composite material are made of following raw materials according:
709g Al-20Si intermediate alloy, 106g technical pure Mg and 31g Cu-14wt.%P intermediate alloy, wherein composite wood
Primary phase is Mg in material2Si, the mass percent for accounting for composite material is 20%；
The Al-20Si intermediate alloy includes Si:20%, Mn:0.230%, Cr:0.036%, Fe；0.8%, Zn:
0.012%, Ni；0.001%, surplus is Al.
The technical pure Mg includes Si:0.005%, Mn:0.001%, Cr:0.002%, Fe；0.001%, Zn:
0.006%, Ni；0.001%, Cu:0.001%, Al:0.002%, surplus are Mg.
The Cu-14P intermediate alloy is alterant, and the additional amount of P is the 0.5% of composite material total amount.
The preparation method of the automotive light weight technology composite material, its step are as follows:
(1) graphite crucible is placed in resistance furnace and is heated to 200 DEG C, Al-20Si intermediate alloy is put into crucible and is continued
Being warming up to 780 DEG C is completely melt alloy, cools to 710 DEG C for use after keeping the temperature 5min, obtains Al-20Si alloy melt；
(2) after the technical pure Mg that aluminium foil coats being preheated 30min at 290 DEG C, the Al-20Si alloy melt that is pressed into
It is interior, 780 DEG C of heat preservations are warming up to, 10min is kept the temperature, after pure Mg is completely melt, refining slagging-off obtains melt；
(3) 750 DEG C are warming up to, the Cu-14P intermediate alloy after preheating is added in melt, is poured after keeping the temperature 20min
Note obtains the cylindrical gravitational casting sample that diameter dimension is 55mm；
(4) further processing of casting sample is put into resistance furnace and is heated at 65mm, in 565 DEG C of heat preservation 50min, obtained
Pre-extrusion sample；
(5) pre-extrusion sample is put into the extrusion die after preheating and squeezes simultaneously pressure maintaining 35s under the conditions of 255Mpa, squeezed
The sample for being 66mm at diameter.
Fig. 1 is the microstructure picture for the composite material that the embodiment of the present invention 1 is prepared, it will be seen from figure 1 that this hair
Bright microstructure of composite form is good.The performance for the composite material that embodiment 1 is prepared is as shown in table 1.
Embodiment 2
A kind of automotive light weight technology aluminum matrix composite, the composite material are made of following raw materials according:
700g Al-20Si intermediate alloy, 103g technical pure Mg and 29g Cu-14wt.%P intermediate alloy, wherein composite wood
Primary phase is Mg in material2Si, the mass percent for accounting for composite material is 20%；
The Al-20Si intermediate alloy includes Si:20%, Mn:0.230%, Cr:0.036%, Fe；0.8%, Zn:
0.012%, Ni；0.001%, surplus is Al.
The technical pure Mg includes Si:0.005%, Mn:0.001%, Cr:0.002%, Fe；0.001%, Zn:
0.006%, Ni；0.001%, Cu:0.001%, Al:0.002%, surplus are Mg.
The Cu-14P intermediate alloy is alterant, and the additional amount of P is the 0.5% of composite material total amount.
The preparation method of the automotive light weight technology composite material, its step are as follows:
(1) graphite crucible is placed in resistance furnace and is heated to 200 DEG C, Al-20Si intermediate alloy is put into crucible and is continued
Being warming up to 780 DEG C is completely melt alloy, cools to 710 DEG C for use after keeping the temperature 5min, obtains Al-20Si alloy melt；
(2) after the technical pure Mg that aluminium foil coats being preheated 30min at 290 DEG C, the Al-20Si alloy melt that is pressed into
It is interior, 780 DEG C of heat preservations are warming up to, 10min is kept the temperature, after pure Mg is completely melt, refining slagging-off obtains melt；
(3) 750 DEG C are warming up to, the Cu-14P intermediate alloy after preheating is added in melt, is poured after keeping the temperature 20min
Note obtains the cylindrical gravitational casting sample that diameter dimension is 55mm；
(4) further processing of casting sample is put into resistance furnace and is heated at 65mm, in 565 DEG C of heat preservation 60min, obtained
Pre-extrusion sample；
(5) pre-extrusion sample is put into the extrusion die after preheating and squeezes simultaneously pressure maintaining 35s under the conditions of 255Mpa, squeezed
The sample for being 66mm at diameter.
The performance for the composite material that embodiment 2 is prepared is as shown in table 1.
Embodiment 3
A kind of automotive light weight technology aluminum matrix composite, the composite material are made of following raw materials according:
710g Al-20Si intermediate alloy, 105g technical pure Mg and 30g Cu-14wt.%P intermediate alloy, wherein composite wood
Primary phase is Mg in material2Si, the mass percent for accounting for composite material is 20%；
The Al-20Si intermediate alloy includes Si:20%, Mn:0.230%, Cr:0.036%, Fe；0.8%, Zn:
0.012%, Ni；0.001%, surplus is Al.
The technical pure Mg includes Si:0.005%, Mn:0.001%, Cr:0.002%, Fe；0.001%, Zn:
0.006%, Ni；0.001%, Cu:0.001%, Al:0.002%, surplus are Mg.
The Cu-14P intermediate alloy is alterant, and the additional amount of P is the 0.5% of composite material total amount.
The preparation method of the automotive light weight technology composite material, its step are as follows:
(1) graphite crucible is placed in resistance furnace and is heated to 200 DEG C, Al-20Si intermediate alloy is put into crucible and is continued
Being warming up to 780 DEG C is completely melt alloy, cools to 710 DEG C for use after keeping the temperature 5min, obtains Al-20Si alloy melt；
(2) after the technical pure Mg that aluminium foil coats being preheated 30min at 290 DEG C, the Al-20Si alloy melt that is pressed into
It is interior, 780 DEG C of heat preservations are warming up to, 10min is kept the temperature, after pure Mg is completely melt, refining slagging-off obtains melt；
(3) 750 DEG C are warming up to, the Cu-14P intermediate alloy after preheating is added in melt, is poured after keeping the temperature 20min
Note obtains the cylindrical gravitational casting sample that diameter dimension is 55mm；
(4) further processing of casting sample is put into resistance furnace and is heated at 65mm, in 565 DEG C of heat preservation 100min, obtained
Pre-extrusion sample；
(5) pre-extrusion sample is put into the extrusion die after preheating and squeezes simultaneously pressure maintaining 35s under the conditions of 255Mpa, squeezed
The sample for being 66mm at diameter.
The performance for the composite material that embodiment 3 is prepared is as shown in table 1.
Comparative example 1
Actual conditions and reaction condition are with embodiment 2, the difference is that the soaking time of step (4) is 0min.
Comparative example 2
Actual conditions and reaction condition are with embodiment 2, the difference is that the soaking time of step (4) is 160min.
The embodiment and comparative example 1-2 catalytic effect such as table 1 of embodiment 1-3:
Table 1
In table 1, loss of weight ratio=(HT200 density-composite density)/HT200 density.
The foregoing is merely one embodiment of the invention, are not intended to limit the present invention, all to use equivalent substitution or equivalent transformation
Mode technical solution obtained, fall within the scope of protection of the present invention.
Claims (10)
1. a kind of automotive light weight technology aluminum matrix composite, which is characterized in that the composite material in parts by weight, by following original
Material is made:
700-710 parts of Al-20Si intermediate alloy, 103-106 parts of technical pure Mg and 29-31 parts of Cu-14P intermediate alloy, wherein multiple
Primary phase is Mg in condensation material2Si, the mass percent for accounting for composite material is 20%；
The Al-20Si intermediate alloy is according to mass percent, including Si:18-20.1%, Mn:0.2-0.25%, Cr:0.01-
0.04%, Fe:0.4-0.8%, Zn:0.01-0.02%, Ni:0.001-0.003%, surplus are Al；
The technical pure Mg is according to mass percent, including Si:0.003-0.006%, Mn:0.001-0.005%, Cr:
0.002-0.005%, Fe:0.001-0.004%, Zn:0.004-0.008%, Ni:0.001-0.004%, Cu:0.001-
0.003%, Al:0.001-0.004%, surplus are Mg；
The Cu-14P intermediate alloy is alterant, and the additional amount of P is the 0.5% of composite material total amount.
2. a kind of automotive light weight technology aluminum matrix composite according to claim 1, which is characterized in that the Al-
20Si intermediate alloy is according to mass percent, including Si:20%, Mn:0.230%, Cr:0.036%, Fe:0.8%, Zn:
0.012%, Ni:0.001%, surplus are Al.
3. a kind of automotive light weight technology aluminum matrix composite according to claim 1, which is characterized in that the technical pure Mg
According to mass percent, including Si:0.005%, Mn:0.001%, Cr:0.002%, Fe:0.001%, Zn:0.006%, Ni:
0.001%, Cu:0.001%, Al:0.002%, surplus are Mg.
4. a kind of preparation method of automotive light weight technology composite material described in claim 1-3 any one, which is characterized in that packet
It includes:
(1) graphite crucible is placed in resistance furnace, is warming up to 190-210 DEG C, Al-20Si intermediate alloy is put into crucible,
Continuing to be warming up to 760-780 DEG C is completely melt alloy, cools to 700-720 DEG C after keeping the temperature 5-10min, obtains stand-by Al-
20Si alloy melt；
(2) it in the Al-20Si alloy melt that indentation step (1) obtains after preheating the pure Mg of technique that aluminium foil coats, is protected after heating
Temperature, after pure Mg is completely melt, refining slagging-off obtains melt；
(3) it is warming up to 730-750 DEG C, the Cu-14P intermediate alloy after preheating is added in the melt of step (2), is kept the temperature laggard
Row casting, obtains casting sample；
(4) being put into resistance furnace for casting sample that step (3) obtains is heated, in 565-570 DEG C of heat preservation 50-100min, is obtained
To pre-extrusion sample；
(5) step (4) is obtained into pre-extrusion sample and is put into extrusion die extruding and pressure maintaining 30- under the conditions of 250-255Mpa
35s obtains automotive light weight technology composite material.
5. a kind of preparation method of automotive light weight technology composite material according to claim 4, which is characterized in that the step
(2) preheating temperature in is 280-300 DEG C, preheating time 30-40min.
6. a kind of preparation method of automotive light weight technology composite material according to claim 4, which is characterized in that the step
(2) be warming up to 780-800 DEG C of heat preservation.
7. a kind of preparation method of automotive light weight technology composite material according to claim 4, which is characterized in that the step
(3) soaking time is 15-20min.
8. a kind of preparation method of automotive light weight technology composite material according to claim 4, which is characterized in that the step
(3) casting sample is the cylindrical gravitational casting sample that diameter dimension is 54-56mm.
9. a kind of preparation method of automotive light weight technology composite material according to claim 4, which is characterized in that the step
(4) it is put into before resistance stove heating, first by the further processing of casting sample at 60-70mm.
10. a kind of preparation method of automotive light weight technology composite material according to claim 4, which is characterized in that the step
Suddenly the diameter of the automotive light weight technology composite material of (5) is 64-66mm.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110369949A (en) * | 2019-06-28 | 2019-10-25 | 扬州扬子江宝云缸套有限公司 | A kind of engine cylinder body processing technology |
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| CN103144370A (en) * | 2011-12-07 | 2013-06-12 | 深圳富泰宏精密工业有限公司 | Aluminum product and preparation method thereof |
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2019
- 2019-01-15 CN CN201910035399.XA patent/CN109628780B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2413351A1 (en) * | 2009-03-23 | 2012-02-01 | Tanaka Denshi Kogyo K.K. | Coated copper wire for ball bonding |
| CN103144370A (en) * | 2011-12-07 | 2013-06-12 | 深圳富泰宏精密工业有限公司 | Aluminum product and preparation method thereof |
Non-Patent Citations (1)
| Title |
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| 刘晓波等: ""不同等温热处理条件下半固态挤压Mg2Si/Al复合材料的组织和性能"", 《吉林大学学报（工学版）》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110369949A (en) * | 2019-06-28 | 2019-10-25 | 扬州扬子江宝云缸套有限公司 | A kind of engine cylinder body processing technology |
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