CN103540813B - A kind of Yb2O3The processing method of the Al-Si-Zn line aluminium alloy strengthened - Google Patents
A kind of Yb2O3The processing method of the Al-Si-Zn line aluminium alloy strengthened Download PDFInfo
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- CN103540813B CN103540813B CN201310442966.6A CN201310442966A CN103540813B CN 103540813 B CN103540813 B CN 103540813B CN 201310442966 A CN201310442966 A CN 201310442966A CN 103540813 B CN103540813 B CN 103540813B
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 31
- 229910006776 Si—Zn Inorganic materials 0.000 title claims abstract description 28
- 238000003672 processing method Methods 0.000 title claims abstract description 10
- 239000000956 alloy Substances 0.000 claims abstract description 31
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 30
- 238000010438 heat treatment Methods 0.000 claims abstract description 16
- FIXNOXLJNSSSLJ-UHFFFAOYSA-N ytterbium(III) oxide Inorganic materials O=[Yb]O[Yb]=O FIXNOXLJNSSSLJ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 230000032683 aging Effects 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 229910021364 Al-Si alloy Inorganic materials 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 3
- 230000014759 maintenance of location Effects 0.000 claims description 3
- 229910001404 rare earth metal oxide Inorganic materials 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 229910052761 rare earth metal Inorganic materials 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 150000002910 rare earth metals Chemical class 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 239000000470 constituent Substances 0.000 description 2
- 230000005496 eutectics Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910018125 Al-Si Inorganic materials 0.000 description 1
- 229910000632 Alusil Inorganic materials 0.000 description 1
- 229910018520 Al—Si Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000013386 optimize process Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 229910052706 scandium Inorganic materials 0.000 description 1
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical group [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
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Abstract
The invention provides a kind of Yb2O3The processing method of the Al-Si-Zn line aluminium alloy strengthened, is made up of reasonable offer step, Metamorphism treatment step and finished heat treatment step.By the rare earth oxide metamorphism to Al-Si-Zn line aluminium alloy, in conjunction with Technology for Heating Processing, improve the tensile property of Al-Si-Zn line aluminium alloy, significantly improve strength of alloy and elongation percentage.
Description
Technical field
The present invention relates to Al-Si-Zn line aluminium alloy field, specifically, relate to the processing method of a kind of high intensity Al-Si-Zn line aluminium alloy.
Background technology
Al-Si-Zn system alloy silicon content is low, has excellent castability and processability, ambient stable phase Al2Zn can thermally treated be solidly soluted in alloy substrate, be therefore a kind of can heat treatment strengthen aluminium alloy.Al-Si-Zn alloy after rotten and heat treatment can obtain good mechanical property, is therefore had increasingly been used in industrial machinery and equipment.And the usual structure of industrial machinery and equipment is complicated, work under bad environment, the performance of material is had higher requirement by special working environment, will have casting and processing characteristics preferably, high tensile strength and elongation percentage, good heat conductivity is had in the temperature range of room temperature and 250 DEG C.In order to meet these instructions for uses, it is necessary to improving alloy production technique, optimized alloy composition is optimized process.
There are some researches show, in alusil alloy, rare earth not only serves as alterant, and can play the effect purifying aluminium alloy.Rare-Earth Element Chemistry character is active, can with the O in aluminium alloy2、H2, S element etc. react, thus the air content reduced in aluminium alloy and sulfur content, play the effect purifying aluminium alloy.Under certain process conditions, with rare earth, aluminum alloy melt being carried out purified treatment, its clean-up effect is even more than conventional C2Cl6And innocuous refining flux.Using rare earth to aluminum alloy melt degasification, operating process is simply steady, does not have aluminium alloy boiling
The mechanical property of as cast condition Al-Si-Zn alloy is poor, it is therefore desirable to is changed the microstructure morphology of alloy by certain means, has positive effect to putting forward heavy alloyed mechanical property.This alloy be can heat treatment strengthen alloy, make the Al in alloy by carrying out heat treatment2Zn phase is solidly soluted in matrix, thus playing the effect of solution strengthening.Many research has been had at present for the rotten of Al-Si eutectic structure, it is comparatively ripe that the metamorphism of eutectic Si is studied by Sr, it is applied to the problem that the existence all more or less of the alterant in actual production is certain at present, therefore, is still necessary the alterant that continual exploitation is new.Rare earth oxide, as the more resource of a kind of China reserves, ought to more be applied, and existing research was it has been shown that Al-Si-Zn alloy was had metamorphism by rare earth element.
Summary of the invention
In order to solve above-mentioned technical problem, the invention provides the processing method of a kind of high intensity Al-Si-Zn line aluminium alloy, use the method can be obviously improved the tensile property of Al-Si-Zn line aluminium alloy.
The technical solution used in the present invention is: the processing method of a kind of high intensity Al-Si-Zn line aluminium alloy, it is characterized in that: the component that described Al-Si-Zn line aluminium alloy contains following weight percentage ratio: the Yb of 0.1～1.0%2O3The Si of 6.0～8.0%, the Zn of 2.0～5.0%, the Fe of 0.10～0.30%, the Cu of 0.01～0.1%, the Mg of 0.001～0.005%, the Mn of 0.001～0.005%, the Ti of 0.001～0.005%, and inevitable impurity, surplus is aluminum, and described processing method is made up of reasonable offer step, Metamorphism treatment step and finished heat treatment step；Specifically, reasonable offer step: first passing through and add pure Al material and pure Zn material mixed preparing in Al-Si alloy, fusing pours into alloy plate；Metamorphism treatment step: put into by the alloy plate prepared in resistance furnace and melt, adds alterant and stirs, is incubated, being poured in metal mold after slagging-off, and described metal mold preheats before cast；Finished heat treatment step: metal mold is being carried out solution treatment, water-cooled after insulation, then carry out Ageing Treatment, after insulation, air cooling obtains product.
In described reasonable offer step, by adding the pure Al material that aluminum content is 99.9% and the pure Zn material mixed preparing that Zn content is 99.9% in Al-Si alloy, pour into alloy plate 1000～1200 DEG C of fusings.
In described Metamorphism treatment step, being put into by the alloy plate prepared in resistance furnace and melt, temperature maintains 800～1000 DEG C, adds alterant and stir after fusing, and described alterant is by the Al powder that mass ratio is 1: 3～5 and Yb2O3Powder is uniformly mixed, and 800～900 DEG C of insulations after addition, temperature retention time is 30～40min, is poured in metal mold at 800～900 DEG C after slagging-off, and described metal mold is preheated to 100～150 DEG C before cast.
In described finished heat treatment step, by described metal mold at 600 DEG C, carrying out solution treatment, be incubated 8～10h, water-cooled, then carry out Ageing Treatment at 200～300 DEG C, be incubated 6～8h, last air cooling obtains product.
The room temperature tensile strength of Al-Si-Zn line aluminium alloy product obtained after finished heat treatment is 350～400MPa, and elongation percentage is 11～13%.
The invention have the advantage that by rare earth oxide Yb2O3Metamorphism to Al-Si-Zn line aluminium alloy, in conjunction with finished heat treatment, improves the tensile property of Al-Si-Zn line aluminium alloy, significantly improves strength of alloy and elongation percentage, have the features such as cost is low, easy and simple to handle, with short production cycle.The Al-Si-Zn line aluminium alloy of output of the present invention is as product, it is possible to be applied to the industry manufacture field such as aviation, automobile.
Detailed description of the invention
Below in conjunction with embodiment and comparative example, the present invention is described in more detail.
Embodiment 1:
Al-Si-Zn line aluminium alloy contains the component of following weight percentage ratio: the Yb of 0.2%2O3, the Si of 6.0%, the Zn of 3.0%, the Fe of 0.10%, the Cu of 0.05%, the Mg of 0.005%, the Mn of 0.005%, the Ti of 0.001%, and inevitable impurity, surplus is aluminum.First, by adding the pure Al material that aluminum content is 99.9% and the pure Zn material mixed preparing that Zn content is 99.9% in Al-Si alloy, alloy plate is poured into 1000 DEG C of fusings.Then, being put into by the alloy plate prepared in resistance furnace and melt, temperature maintains 800 DEG C, adds alterant and stir after fusing, and described alterant is by the Al powder that mass ratio is 1: 3 and Yb2O3Powder is uniformly mixed, and 800 DEG C of insulations after addition, temperature retention time is 30min, is poured in metal mold at 800 DEG C after slagging-off, and metal mold is preheated to 100 DEG C before cast.Then, by metal mold at 600 DEG C, carrying out solution treatment, be incubated 8h, water-cooled, then carry out Ageing Treatment at 200 DEG C, be incubated 6h, last air cooling obtains product.The room temperature tensile strength of obtained Al-Si-Zn line aluminium alloy product is 350MPa, and elongation percentage is 11%.
Comparative example 1:
By Al-Si-Zn line aluminium alloy identical for constituent, after fusing pours into alloy plate, the alloy plate prepared is put in resistance furnace and melt, temperature maintains 800 DEG C, add the alterant containing scandium bearing master alloy after fusing and stir, insulation, pour into a mould after slagging-off.Then, carrying out solution treatment and Ageing Treatment, last air cooling obtains product.The room temperature tensile strength of obtained alloy product is only 200～250MPa, and elongation percentage is only 8～10%.
Comparative example 2:
By Al-Si-Zn line aluminium alloy identical for constituent, after fusing pours into alloy plate, the alloy plate prepared is put in resistance furnace and melt, temperature maintains 800 DEG C, adds alterant and stir after fusing, insulation, pour into a mould after slagging-off, and no longer carry out finished heat treatment.The room temperature tensile strength of obtained alloy product has only reached 100～150MPa, and elongation percentage is only 5～8%.
By embodiment 1 and comparative example 1 and 2 it can be seen that pass through to utilize the processing method of a kind of high intensity Al-Si-Zn line aluminium alloy according to embodiments of the present invention, select specific rare earth oxide Yb2O3And strictly control its content, in conjunction with Technology for Heating Processing step and parameter, it is possible to be obviously improved the tensile property of Al-Si-Zn line aluminium alloy, and significantly improve tensile strength and the elongation percentage of alloy.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: these embodiments can being carried out multiple change, amendment, replacement and modification when without departing from principles of the invention and objective, the scope of the present invention is limited by claim and equivalent thereof.
Claims (1)
1. a processing method for high intensity Al-Si-Zn line aluminium alloy, is characterized in that: the component that described Al-Si-Zn line aluminium alloy contains following weight percentage ratio: the Yb of 0.1～1.0%2O3The Si of 6.0～8.0%, the Zn of 2.0～5.0%, the Fe of 0.10～0.30%, the Cu of 0.01～0.1%, the Mg of 0.001～0.005%, the Mn of 0.001～0.005%, the Ti of 0.001～0.005%, and inevitable impurity, surplus is aluminum, and described processing method is made up of reasonable offer step, Metamorphism treatment step and finished heat treatment step；Specifically,
In described reasonable offer step, by adding the pure Al material that aluminum content is 99.9% and the pure Zn material mixed preparing that Zn content is 99.9% in Al-Si alloy, pour into alloy plate 1000～1200 DEG C of fusings；
In described Metamorphism treatment step, being put into by the alloy plate prepared in resistance furnace and melt, temperature maintains 800～1000 DEG C, adds alterant and stir after fusing, and described alterant is by the Al powder that mass ratio is 1: 3～5 and Yb2O3Powder is uniformly mixed, and 800～900 DEG C of insulations after addition, temperature retention time is 30～40min, is poured in metal mold at 800～900 DEG C after slagging-off, and described metal mold is preheated to 100～150 DEG C before cast；
In described finished heat treatment step, by described metal mold at 600 DEG C, carrying out solution treatment, be incubated 8～10h, water-cooled, then carry out Ageing Treatment at 200～300 DEG C, be incubated 6～8h, last air cooling obtains product；
The room temperature tensile strength of Al-Si-Zn line aluminium alloy product obtained after finished heat treatment is 350～400MPa, and elongation percentage is 11～13%.
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| CN105088025A (en) * | 2015-08-28 | 2015-11-25 | 阜阳安固锅炉压力容器制造有限公司 | Ytterbium-oxide-reinforced scrap aluminum regeneration aluminum alloy material for cylinder cover and preparation method thereof |
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| CN101935789B (en) * | 2009-11-19 | 2012-03-07 | 江苏麟龙新材料股份有限公司 | Hot-dipped cast aluminum alloy containing Al-Zn-Si-Mg-RE-Ti-Ni and manufacturing method thereof |
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