CN106566962A - Al-Si alloy piston - Google Patents
Al-Si alloy piston Download PDFInfo
- Publication number
- CN106566962A CN106566962A CN201610989124.6A CN201610989124A CN106566962A CN 106566962 A CN106566962 A CN 106566962A CN 201610989124 A CN201610989124 A CN 201610989124A CN 106566962 A CN106566962 A CN 106566962A
- Authority
- CN
- China
- Prior art keywords
- alloy
- piston
- alloy piston
- aluminium
- alsi
- 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
-
- 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
Abstract
The invention discloses an Al-Si alloy piston. A hypereutectic Al-Si alloy is adopted for the Al-Si alloy piston, and comprises the following components in percentage by mass: 22-26% of Si, 0.5-2.5% of Cu, 0.3-1.2% of Mg, 0.2-0.6% of Mn, 0.2-0.4% of Ti, 0.15-0.25% of Zn and the balance of Al. By adoption of the Al-Si alloy piston disclosed by the invention, the defects that a conventional Si-Al alloy piston is low in size stability and anti-seizure load capacity, and the volume is subjected to irreversible expansion at high temperature can be overcome.
Description
Technical field
The present invention relates to technical field of engines, more particularly to a kind of aluminium-silicon alloy piston.
Background technology
One important measures of parts material lightweight are exactly for steel with aluminum.Aluminium alloy has light specific gravity, easy-formation, ratio
The features such as intensity height, good corrosion resistance, it is widely used on auto parts and components as light metal.And based on Si added elements, it is auxiliary
The Al-Si alloys of the addition element such as Cu, Mg are helped, not only proportion is lighter than traditional aluminium alloy, and with good elevated temperature strength, resistance to
The advantages of mill property, thermostability and relatively low thermal coefficient of expansion, the ideal material that iron prepares engine piston is that instead of, should
It is very wide with prospect.
Hypoeutectic and eutectic Al-Si alloy overcome that AlCu systems alloy thermal coefficient of expansion is big, the shortcoming that density is big, and own Jing is wide
It is general to be applied in the production of automobile and motorcycle piston.However, the fatal problem that the two classes alloy is present in actual applications is
Piston size stability is poor, bite-resistant load capacity is poor, produces the irreversible expansion of volume so as to cause " Cylinder sticking " existing during high temperature
The generation of elephant so that electromotor cannot normal work.Due to above-mentioned defect inevitable in performance, hypoeutectic and altogether
Brilliant alusil alloy can not increasingly meet the requirement of Modern Engine light weight high speed as the own Jing of application of piston material.Altogether
On the basis of brilliant alusil alloy, improve Si and high silicon transcocrystallized Al-Si alloy is obtained containing putting, it is the mechanical behavior under high temperature of alloy, wear-resisting
Property, dimensional stability and anti-seizing property are greatly improved.
Therefore, strengthen transcocrystallized Al-Si alloy so as to improving the performance of piston, meeting the electromotor for improving constantly
The requirement of energy, is of great practical significance.
The content of the invention
It is an object of the invention to propose a kind of AlSi alloy piston, the work of piston overpowers traditional Si-Al alloys is enabled to
Plug poor dimensional stability, bite-resistant load capacity are poor, and the irreversible expansion of volume is produced during high temperature.
It is that, up to this purpose, the present invention is employed the following technical solutions：
A kind of AlSi alloy piston, the AlSi alloy piston adopt hyper eutectic silicon aluminium alloy, wherein by mass percentage
Meter Si 22-26%, Cu 0.5-2.5%, Mg 0.3-1.2%, Mn 0.2-0.6%, Ti 0.2-0.4%, Zn 0.15-
0.25%, Al surplus.
Find, when Si contents are 22-26%, have most during alloy graining by the research to Hypereutectic Al-Si Alloy
Little solidification shrinkage rate.The wear rate of Al-Si alloys is raised after falling before with the increase of Si contents, unmetamorphosed alusil alloy
Wear rate minimum point is in Si contents 21% or so, and the alusil alloy minimum point for going bad is 26% or so.Therefore the present invention will
Si contents determine in 22-26%, preferred 23-24%.
A small amount of Mg is individually added in Al-Si alloys and forms Mg2Si hardening constituents.During quenching, Mg2Si is incorporated in αsolidsolution,
Form dispersion phase precipitation after Ageing Treatment again so that the crystalline temperature battle array of αsolidsolution is distorted, and so as to reinforced alloys, significantly carries
High intensity, but alloy elongation percentage can decline.
Cu can improve the hardness and mechanical behavior under high temperature of aluminium alloy, and its solid solution effect can also improve the anti-tired of aluminium alloy
Labor intensity.But as the chemical potential of Cu is higher than Al, intercrystalline corrosion and stress corrosion are also easy to produce, reduce the corrosion resistance of aluminium alloy.
In the present invention, while adding Cu and Mg, W hardening constituent (Al are formed in aluminium alloyxMg5Si4Cu4), compare Mg2Si
And CuAl2Phase, the reinforcing effect of W phases preferably, can significantly promote the raising of alloy mechanical property.But Cu and Mg is in Al-Si alloys
In total amount it is very few, reinforcing effect is just little, but total amount is too high, causes the plasticity of alloy to be deteriorated again.Therefore the present invention selects Cu
0.5-2.5%, Mg 0.3-1.2%.
In the present invention, Mn is used for the illeffectss for eliminating Fe.Meanwhile, 0.2-0.6% scope of the Mn contents in the present invention
It is interior, moreover it is possible to increase alloy plasticity.As Fe easily forms acicular beta-FeSiAl with Si, Al in the alloy5Phase, seriously isolates alloy
Matrix, reduces alloy obdurability.During Mn can make alloy, Fe is mutually turned into fine and closely woven skeleton shape α-Fe phases from gill shape β-Fe, reduces
Harm.
In the present invention, Ti is used for crystal grain thinning, improves the mechanical property and plasticity of alloy, and peritectic reaction occurs being formed
α (Al) phase.But Ti contents can not be too big, and otherwise unnecessary Ti can generate the TiAl of free state3, after aggregation, cause the mechanics of material
Hydraulic performance decline.
The structure and casting method of the piston of the present invention, is the known technology of this area, and the present invention is no longer superfluous to which
State.
The present invention manufactures aluminium-silicon alloy piston by the alloy of selection special component so that its room temperature strength reaches
More than 240MPa, 300 DEG C of elevated temperature strengths reach more than 160MPa, and hardness reaches 140-150HBS, can meet the requirement of piston.
Specific embodiment
Technical scheme is further illustrated below by specific embodiment.
Embodiment 1
A kind of AlSi alloy piston, the AlSi alloy piston adopt hyper eutectic silicon aluminium alloy, wherein by mass percentage
Meter Si 22%, Cu 0.5%, Mg 1.2%, Mn 0.2%, Ti 0.2%, Zn 0.15%, Al surpluses.
After testing so that its room temperature strength reaches more than 240MPa, 300 DEG C of elevated temperature strengths reach more than 160MPa, hardness
140-150HBS is reached, the requirement of piston can be met.
Embodiment 2
A kind of AlSi alloy piston, the AlSi alloy piston adopt hyper eutectic silicon aluminium alloy, wherein by mass percentage
Meter Si 23.5%, Cu 2.5%, Mg 0.5%, Mn 0.4%, Ti 0.4%, Zn 0.25%, Al surpluses.
After testing so that its room temperature strength reaches more than 240MPa, 300 DEG C of elevated temperature strengths reach more than 160MPa, hardness
140-150HBS is reached, the requirement of piston can be met.
Embodiment 3
A kind of AlSi alloy piston, the AlSi alloy piston adopt hyper eutectic silicon aluminium alloy, wherein by mass percentage
Meter Si 26%, Cu 2.5%, Mg 1.2%, Mn 0.6%, Ti 0.4%, Zn 0.25%, Al surpluses.
After testing so that its room temperature strength reaches more than 240MPa, 300 DEG C of elevated temperature strengths reach more than 160MPa, hardness
140-150HBS is reached, the requirement of piston can be met.
Claims (2)
1. a kind of AlSi alloy piston, the AlSi alloy piston adopt hyper eutectic silicon aluminium alloy, wherein by mass percentage
Si 22-26%, Cu 0.5-2.5%, Mg 0.3-1.2%, Mn 0.2-0.6%, Ti 0.2-0.4%, Zn 0.15-
0.25%, Al surplus.
2. aluminium-silicon alloy piston according to claim 1, it is characterised in that Si contents are 23-24%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610989124.6A CN106566962A (en) | 2016-11-10 | 2016-11-10 | Al-Si alloy piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610989124.6A CN106566962A (en) | 2016-11-10 | 2016-11-10 | Al-Si alloy piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106566962A true CN106566962A (en) | 2017-04-19 |
Family
ID=58540862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610989124.6A Pending CN106566962A (en) | 2016-11-10 | 2016-11-10 | Al-Si alloy piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106566962A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05179384A (en) * | 1991-12-27 | 1993-07-20 | Honda Motor Co Ltd | High strength and high toughness aluminum alloy manufactured by spray deposition method |
| CN1546708A (en) * | 2003-12-03 | 2004-11-17 | 东华大学 | Aluminum silicon alloy series possessing granulated silicon phase and its process |
| CN101775530A (en) * | 2010-03-04 | 2010-07-14 | 安徽省恒泰活塞制造有限公司 | Hypereutectic al-si alloy piston material |
| EP2236637A2 (en) * | 2009-04-03 | 2010-10-06 | Technische Universität Clausthal | Pressure casting mould made of a hypereutectic aluminium silicon cast alloy and method for producing same |
| CN104651679A (en) * | 2015-02-16 | 2015-05-27 | 山东滨州华创金属有限公司 | Insoluble metal-reinforced aluminum alloy material for piston |
-
2016
- 2016-11-10 CN CN201610989124.6A patent/CN106566962A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05179384A (en) * | 1991-12-27 | 1993-07-20 | Honda Motor Co Ltd | High strength and high toughness aluminum alloy manufactured by spray deposition method |
| CN1546708A (en) * | 2003-12-03 | 2004-11-17 | 东华大学 | Aluminum silicon alloy series possessing granulated silicon phase and its process |
| EP2236637A2 (en) * | 2009-04-03 | 2010-10-06 | Technische Universität Clausthal | Pressure casting mould made of a hypereutectic aluminium silicon cast alloy and method for producing same |
| CN101775530A (en) * | 2010-03-04 | 2010-07-14 | 安徽省恒泰活塞制造有限公司 | Hypereutectic al-si alloy piston material |
| CN104651679A (en) * | 2015-02-16 | 2015-05-27 | 山东滨州华创金属有限公司 | Insoluble metal-reinforced aluminum alloy material for piston |
Non-Patent Citations (1)
| Title |
|---|
| 胡慧芳: "《Al-25Si合金Si相形态、变质及性能研究》", 《中国博士学位论文全文数据库（工程科技1辑）》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102312137B (en) | Aluminum-silicon-magnesium Cast aluminium alloy gold and casting technique | |
| Jeong | High temperature mechanical properties of Al–Si–Mg–(Cu) alloys for automotive cylinder heads | |
| Ji et al. | Development of a super ductile diecast Al–Mg–Si alloy | |
| CN105316542B (en) | A kind of high-intensity and high-tenacity pack alloy and its product | |
| CN105483465B (en) | A kind of die casting Al-Si-Mg cast aluminium alloy golds and preparation method thereof | |
| KR20140148489A (en) | Aluminium alloy | |
| Hurtalova et al. | Changes in structural characteristics of hypoeutectic Al-Si cast alloy after age hardening | |
| CN104561688A (en) | Heat-resistant cast aluminum alloy and gravity casting method thereof | |
| CN110079711B (en) | Heat-resistant high-pressure cast Al-Si-Ni-Cu aluminum alloy and preparation method thereof | |
| CN104093867A (en) | High performance aisimgcu casting alloy | |
| CA3065136C (en) | High-strength aluminium-based alloy | |
| CN103451484A (en) | Casting aluminium-silicon alloy for cylinder body of automobile engine | |
| WO2005106057A2 (en) | Heat treatable al-zn-mg alloy for aerospace and automotive castings | |
| CN105838939A (en) | Aluminum magnesium alloy | |
| CN102925759B (en) | Aluminum alloy, preparation method and applications thereof | |
| US8329094B2 (en) | Magnesium alloy and process for producing the same | |
| CN113444929A (en) | Microalloying non-heat treatment high-strength and high-toughness die-casting aluminum alloy and preparation process thereof | |
| CN102676961B (en) | Heat treatment method of copper-rich cast hypoeutectic aluminum-silicon alloy | |
| Zhang et al. | Effects of Mn and Cr additions on the recrystallization behavior of Al-Mg-Si-Cu alloys | |
| CN105401005A (en) | Al-Si alloy material and production method thereof | |
| CN103451485A (en) | Casting aluminium-silicon alloy for cylinder cover of automobile engine | |
| Odusote et al. | Mechanical properties and microstructure of precipitation-hardened Al-Cu-Zn alloys | |
| WO2024017085A1 (en) | High-strength and high-toughness al-cu series cast aluminum alloy, preparation method therefor, and use of same in wheel hub manufacturing | |
| CN104099508A (en) | High-strength high-damping magnesium alloy containing rare-earth elements | |
| CN106435296A (en) | Modified Si-Al alloy piston |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170419 |
|
| WD01 | Invention patent application deemed withdrawn after publication |