CN85102206A - High plasticity casting aluminium alloy of Si-Zn-Te system - Google Patents
High plasticity casting aluminium alloy of Si-Zn-Te system Download PDFInfo
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- CN85102206A CN85102206A CN 85102206 CN85102206A CN85102206A CN 85102206 A CN85102206 A CN 85102206A CN 85102206 CN85102206 CN 85102206 CN 85102206 A CN85102206 A CN 85102206A CN 85102206 A CN85102206 A CN 85102206A
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Abstract
The invention belongs to high-plasticity casting aluminum alloy material, casting add 0.001%～0.200% tellurium in aluminium-Si system alloy or add 0.001%～0.200% tellurium and 0.1%～0.2% antimony to play microalloying or combined microalloying.Aluminium alloy of the present invention is keeping on the better intensity based, its unit elongation maximum can reach about 20%, has good casting property simultaneously, and machinability is good, characteristics such as melting technology is easy are the withstand shocks good materials of load gadget of the complex-shaped or thin-walled of casting.
Description
The invention belongs to cast aluminium alloy material.
For casting Al-Si class alloy, obtain unit elongation greater than 10%, intensity is the thing of a difficulty but still keep preferably.Just domestic research and application feature sees that the LM22 of Britain and LM22W alloy are the good cast aluminium alloys of plasticity of generally acknowledging at present, and their main chemical compositions is: Si4.0%～6.0%, Cu2.8%～3.8%, Mn0.2%～0.6%, Fe0.6%, Zn0.15%, Mg0.05%, Ti0.2%, Ni0.15%; Also has a spot of impurity element: Pb0.1% in addition, Sn0.05%.Their mechanical property preferably the time unit elongation reach 8.0%, breakdown point (σ b) remains on 24kg/mm
2At some in particular cases, as cast aluminium alloy spares such as tank gear box housings, often under arms the time because of vibration embrittlement.Though Chinese scholars and engineering technical personnel on castmethod, carried out many improvement on the material, unit elongation does not still reach 10%.
The present invention is at above-mentioned purpose and requirement, adopt the technical measures of microalloying or combined microalloying, and the content of principal element in the adjustment alloy, developed high plasticity alloy cast aluminum, under the situation that keeps better intensity, its unit elongation index surpasses 15%, this at home and abroad Al-Si be to be the high plasticity alloy cast aluminum of never seeing in the casting alloy.
Main points of the present invention are to have utilized aluminium silicon class alloy casting performance good, and material source is extensive, the advantage that price is more cheap.Kept sufficiently high silicon content, remained on preferably on the level in order to make intensity, thus some ageing strengthening elements added, and correspondingly added and can improve castability, the elemental tellurium of machinability and mechanical property or tellurium and antimony.Its add-on is: the antimony of 0.001%～0.200% tellurium or 0.001%～0.200% tellurium and 0.1%～0.2%, also added the grain refining element titanium in addition.Alloy of the present invention can be formulated with general smelting equipment and industrial pure material, and its chemical ingredients scope can be controlled in:
ZLAlSi10Zn5TeTi:Si8%～12%, Zn2%～8%, Te0.001%～0.200%, Ti0.1%～0.2%, all the other are Al; The impurity content span of control be Fe below 0.2%, Mn is below 0.1%, Mg is below 0.1%, every kind of other impurity element below 0.1% and total amount below 0.3.
ZLAlSi10Zn5TeSbTi:Si8%～12%, Zn2%～8%, Te0.001%～0.200%, Ti0.1%～0.2%, Sb0.1%～0.2%, all the other are Al; The impurity content span of control be Fe below 0.2%, Mn is below 0.1%, Mg is below 0.1%, every kind of other impurity element below 0.1% and total amount below 0.3%.
Because the appropriate cooperation of various elements makes it keep good castability to increase substantially unit elongation again, and becomes high plasticity alloy cast aluminum in the alloy of the present invention.With alloy melting of the present invention, and become the mechanical property sample of standard respectively with metal type cast with sand mold, without mechanical workout, after heat treatment carry out tension test, the mechanical property that is obtained is compared with the ZL401 of China, and tensile strength is suitable, and unit elongation improves 10 times approximately.LM22 alloy than Britain also exceeds 70%～80%.Under the condition, crack expansion power is big under arms for the high explanation of unit elongation foundry goods.This is very important performance to the parts of working under the delivery lotus.The present invention also has like this some characteristics: its castability is better than LM22 and ZL401, and machinability is good, and alloy liquid kept 8 hours under smelting temperature or remelting three times, and mechanical property does not subtract.
The present invention is applicable to sand mold casting, permanent mold casting or low-pressure casting, when being used for pressure die casting, iron-holder can increase to 0.6%～0.8%, but unit elongation has decline slightly, and alloy of the present invention can be used to cast complex-shaped or wall thin and the foundry goods of the load that requires to withstand shocks.Also can be used to the alloying ingot casting.
Claims (1)
1, high plasticity alloy cast aluminum, contain 8%～12% silicon in its chemical ingredients, 2%～8% zinc, 0.1%～0.2% titanium, all the other are aluminium, feature of the present invention is to add 0.001%～0.200% tellurium or add 0.001%～0.200% tellurium and 0.1%～0.2% antimony in this aluminium alloy, as alloy element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85102206 CN85102206B (en) | 1985-04-01 | 1985-04-01 | High plasticity casting aluminium alloy of si-zn-te system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85102206 CN85102206B (en) | 1985-04-01 | 1985-04-01 | High plasticity casting aluminium alloy of si-zn-te system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85102206A true CN85102206A (en) | 1986-03-10 |
| CN85102206B CN85102206B (en) | 1987-04-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85102206 Expired CN85102206B (en) | 1985-04-01 | 1985-04-01 | High plasticity casting aluminium alloy of si-zn-te system |
Country Status (1)
| Country | Link |
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| CN (1) | CN85102206B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105039796A (en) * | 2015-09-10 | 2015-11-11 | 成都锦钛精工科技有限公司 | Aluminum-tellurium intermediate alloy and preparing method and application thereof |
-
1985
- 1985-04-01 CN CN 85102206 patent/CN85102206B/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105039796A (en) * | 2015-09-10 | 2015-11-11 | 成都锦钛精工科技有限公司 | Aluminum-tellurium intermediate alloy and preparing method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN85102206B (en) | 1987-04-22 |
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