CN105803270A - Rare earth zirconium intermediate alloy for aluminum alloy production and preparing method of intermediate alloy - Google Patents
Rare earth zirconium intermediate alloy for aluminum alloy production and preparing method of intermediate alloy Download PDFInfo
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- CN105803270A CN105803270A CN201610341054.3A CN201610341054A CN105803270A CN 105803270 A CN105803270 A CN 105803270A CN 201610341054 A CN201610341054 A CN 201610341054A CN 105803270 A CN105803270 A CN 105803270A
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- alloy
- rare earth
- intermediate alloy
- zirconium
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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
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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
- 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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- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a rare earth zirconium intermediate alloy for aluminum alloy production and a preparing method of the intermediate alloy. The rare earth zirconium intermediate alloy is composed of, by weight percent, 1% to 5% of rare earth metal, 1% to 5% of Zr and the balance aluminum. Rare earth and zirconium are matched to replace scandiumme in the aluminum intermediate alloy, and the production cost is reduced.
Description
Technical field
The present invention relates to a kind of rare earth zirconium intermediate alloy for aluminium alloy production and preparation method thereof, belong to aluminium alloy technology neck
Territory.
Background technology
Rare earth metal (RE) is widely used in aluminium alloy, eliminates the impact of objectionable impurities element, such as H, O, S, wherein H
It is element the most harmful in aluminium alloy, causes ingot casting crackle, hole etc..When rare earth can increase ingot casting, the degree of supercooling of alloy, has
Crystal grain thinning, improves the distribution of Si, precipitation strength, improves intensity and the plasticity of material, and rare earth is addition in aluminium alloy
0.1-0.5%.Scandium is a kind of rare sugars, and proportion is close with aluminum, and lattice paprmeter is the most close, and scandium substitutes aluminum atom, will not
Cause big lattice very to become, be a kind of best alterant element of aluminium alloy, be widely used in high-strength aluminum alloy material, particularly
In Aero-Space high-strength light aluminium alloy, its modification effect is better than tradition AlTiB, is that the elements such as Ti, Zr, B, Mn are reached
Less than effect.But owing to the price of scandium is high, hinder its use.
Summary of the invention
Present invention solves the technical problem that and be present invention solves the technical problem that it is that in reduction aluminium alloy manufacturing process, scandium makes
With, find a kind of alterant element that can substitute for scandium.
The technical scheme is that, it is provided that a kind of rare earth zirconium intermediate alloy produced for aluminium alloy, close in the middle of described rare earth zirconium
The composition of gold is: the rare earth metal of 1-5wt% and the Zr of 1-5wt%, surplus is aluminum.
Further, the composition of described rare earth zirconium intermediate alloy is: the rare earth metal of 2wt%, 1%wtZr, and surplus is aluminum.
Further, one or more mixture during described rare earth metal is Sc, La, Y, Ce, Gd, Er.
The present invention further provides the preparation method of described rare earth zirconium intermediate alloy, comprise the following steps: employing rare earth metal,
Fine aluminium, aluminium zirconium hardener are raw material, melting, are incubated 0.5-1h at 700-900 DEG C, after stirring makes alloy homogenization, and casting
Become ingot.
Further, containing aluminum 90wt%, zirconium 10wt% in described aluminium zirconium hardener.
Magnesium-yttrium-transition metal is also the intensified element of aluminium alloy, is best element as V-N steel element zirconium, feasible with aluminum become
Al3Zr compound, crystal grain thinning, improve intensity, in aluminium alloy, addition is less than 0.5%, too much forms thick phase, performance
Decline.Rare earth has higher activity than zirconium, also can be with low melting point element Pb, and Sb, As etc. form high melting compound,
Therefore, the two combines and is used as alterant, the scandium that fictitious hosts is expensive.
The present invention studies discovery RE, Zr and together adds, and it is good that effect is added than individually.Zr adds with RE is together compound, substitutes
Partial Elements Sc, it is possible to decrease material cost.In the case of cost consideration is preferential, even without scandium, use other rare earths, as
Cerium, constitutes AlCeZr intermediate alloy, has better effects too.Owing to RE, Zr solid solubility in aluminum is little, easily generate
High-melting-point intermediate compound, the easy segregation of high-load, uneven, do not affect under production and application simultaneously, control RE, Zr content
At 1-5%.Use water cooled mo(u)ld ingot casting can reduce segregation, make Al (ZrRE) Dispersed precipitate, use junker mold can ensure composition
Uniformity, modification effect is more excellent.
The invention has the beneficial effects as follows, the present invention utilizes rare earth to coordinate with zirconium, replaces the metal scandium in aluminium intermediate alloy, reduces
Production cost, improves modification effect.
Detailed description of the invention
Special instruction: the present invention, for representing simplicity, uses the method for expressing that row is commonly used in the trade.Percent is mass percent,
In the expression formula of alloy, numeral represents that corresponding composition accounts for the mass percent of alloy, no numeral represent the concrete of tie element
Content is unknown, and "-" represents list separator, there is no practical significance；Such as Al-10Zr, represent the Zr containing 10% in Al alloy.Class
Push away applicable.
Below in conjunction with embodiment, the present invention will be described further.
Embodiment 1:
The present embodiment provides a kind of AlCeZr intermediate alloy, and its composition is the aluminum of 4wt%Ce, 2wt%Zr and surplus；Including such as
Lower production process: 50kg medium-frequency induction furnace, graphite crucible, add 99.8% pure Al ingot 15.3kg, add heat fusing, temperature
800 degree, adding metallic cerium 0.9kg, be incubated 0.5 hour, stir, add Al-10Zr alloy 4kg, stirring is all
Even, skim, water-cooled swage ingot casting.
Embodiment 2:
The present embodiment provides the Zr of the Sc and 1% containing 2% in a kind of Al-2Sc-1Zr intermediate alloy, i.e. aluminium alloy；Including as follows
Production process: 50kg medium-frequency induction furnace, graphite crucible, add 99.8% pure Al ingot 18kg, add heat fusing, temperature 900
Degree, adds metal scandium 0.42kg, is incubated 0.5 hour, stirs, add Al-10Zr alloy 2kg, stir,
Skim, water-cooled swage ingot casting.
Embodiment 3:
The present embodiment provides a kind of Al-2 (LaCe)-2Zr intermediate alloy, i.e. contains La, Ce mischmetal gold of 2% in aluminium alloy
Belong to and the Zr of 1%；Including process produced by below: 50kg medium-frequency induction furnace, graphite crucible, add 99.8% pure Al ingot
18kg, adds heat fusing, temperature 750 degree, adds norium 0.5kg, be incubated 1 hour, stir, add
Al-10Zr alloy 4.6kg, stirs, skims, water-cooled swage ingot casting.
Embodiment 4:
The present embodiment provides a kind of Al-2Ce-3Y-1Zr intermediate alloy, including process produced by below: 50kg medium-frequency induction furnace,
Graphite crucible, adds 99.8% pure Al ingot 17.5kg, adds heat fusing, temperature 900 degree, adds metallic cerium 0.45kg, metal
Yttrium 0.62kg, is incubated 1 hour, stirs, add Al-10Zr alloy 2kg, stir, skim, water-cooled swage
Ingot casting.
Application examples 1
By the AlCeZr intermediate alloy of embodiment 1, being proportionally added in Al-Zn-MgMn alloy, obtaining composition is Al-
4.7Zn-2.0Mg-0.3Mn-0.2Ce-0.1Zr alloy, alloy is through ingot casting, hot rolling, and 470 DEG C/2h quenches, during 120 DEG C/24h
Effect, detects its tensile strength and is shown in Table 1.
Application examples 2
By the AlScZr intermediate alloy of embodiment 2, being proportionally added in Al-Zn-Mg-Mn alloy, obtaining composition is Al-
4.7Zn-2.0Mg-0.3Mn-0.2Sc-0.1Zr alloy, alloy is through ingot casting, hot rolling, and 470 DEG C/2h quenches, during 120 DEG C/24h
Effect, detects its tensile strength and is shown in Table 1.
Application examples 3
By the AlCeYZr intermediate alloy of embodiment 4, being proportionally added in Al-Zn-Mg-Mn alloy, obtaining composition is
Al-4.7Zn-2.0Mg-0.3Mn-0.2Ce-0.3Y-0.1Zr alloy, alloy quenches through ingot casting, hot rolling, 470 DEG C/2h, 120 °
C/24h timeliness, detects its tensile strength and is shown in Table 1.
Comparative example 1
Being not added with the aluminium alloy of the intermediate alloy of the application, its composition is: Al-4.7Zn-2.0Mg-0.3Mn.
Comparative example 2
By Al-2Sc intermediate alloy of the prior art, being proportionally added in Al-Zn-Mg-Mn alloy, obtaining composition is
Al-4.7Zn-2.0Mg-0.3Mn-0.2Sc alloy.
The tensile strength test of table 1. various intermediate alloy reinforced aluminium alloy
As seen from the above table, the alloy property obtained after rare earth metal and metal Zr complex intensifying aluminium alloy is greatly carried by the present invention
The intermediate alloy in height, particularly embodiment 2 (when the mass ratio of rare earth metal and Zr is 2:1) the strengthening effect to aluminium alloy
Exceed scandium bearing master alloy.Although the intermediate alloy strengthening effect that embodiment 1 and 4 obtains is slightly below scandium bearing master alloy, but
It is also to have exceeded well over the base alloy do not strengthened；It addition, the price of these rare earth metals is also far below the price of Sc, Ke Yijie
Save significant cost.
Claims (5)
1. the rare earth zirconium intermediate alloy produced for aluminium alloy, it is characterised in that the composition of described rare earth zirconium intermediate alloy is: the rare earth metal of 1-5wt% and the Zr of 1-5wt%, and surplus is aluminum.
2. rare earth zirconium intermediate alloy as claimed in claim 1, it is characterised in that the composition of described rare earth zirconium intermediate alloy is: the rare earth metal of 2wt%, 1%wtZr, and surplus is aluminum.
3. rare earth zirconium intermediate alloy as claimed in claim 1 or 2, it is characterised in that described rare earth metal is one or more mixture in Sc, La, Y, Ce, Gd, Er.
4. the preparation method of the intermediate alloy as described in any one of claim 1-3, it is characterised in that comprise the following steps: using rare earth metal, fine aluminium, aluminium zirconium hardener is raw material, melting, it is incubated 0.5-1h at 700-900 DEG C, after stirring makes alloy homogenization, is cast as ingot.
5. preparation method as claimed in claim 4, it is characterised in that containing aluminum 90wt%, zirconium 10wt% in described aluminium zirconium hardener.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610341054.3A CN105803270A (en) | 2016-05-20 | 2016-05-20 | Rare earth zirconium intermediate alloy for aluminum alloy production and preparing method of intermediate alloy |
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| CN201610341054.3A CN105803270A (en) | 2016-05-20 | 2016-05-20 | Rare earth zirconium intermediate alloy for aluminum alloy production and preparing method of intermediate alloy |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109536787A (en) * | 2019-01-11 | 2019-03-29 | 北京工业大学 | Al-Er-Zr Master alloy refiners |
| CN113388747A (en) * | 2021-04-29 | 2021-09-14 | 百色市广百金属材料有限公司 | Novel aluminum-zirconium-rare earth ternary aluminum alloy additive and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08283921A (en) * | 1995-04-17 | 1996-10-29 | Ykk Kk | High strength aluminum alloy consolidation material and its production |
| CN104674079A (en) * | 2014-05-16 | 2015-06-03 | 黄鑫 | Zr containing ZL aluminum magnesium alloy (Al-10Mg) compounded with rare earth Sc and preparation method of ZL aluminum magnesium alloy |
| CN104928543A (en) * | 2015-06-08 | 2015-09-23 | 湖南君凯咨询顾问有限公司 | Rare-earth modified aluminium alloy material and preparation method thereof |
-
2016
- 2016-05-20 CN CN201610341054.3A patent/CN105803270A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08283921A (en) * | 1995-04-17 | 1996-10-29 | Ykk Kk | High strength aluminum alloy consolidation material and its production |
| CN104674079A (en) * | 2014-05-16 | 2015-06-03 | 黄鑫 | Zr containing ZL aluminum magnesium alloy (Al-10Mg) compounded with rare earth Sc and preparation method of ZL aluminum magnesium alloy |
| CN104928543A (en) * | 2015-06-08 | 2015-09-23 | 湖南君凯咨询顾问有限公司 | Rare-earth modified aluminium alloy material and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| CONG XU ETC.: "Effect of cooling rate on morphology of primary particles in Al-Sc-Zr master alloy", 《TRANS. NONFERROUS MET. SOC. CHINA》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109536787A (en) * | 2019-01-11 | 2019-03-29 | 北京工业大学 | Al-Er-Zr Master alloy refiners |
| CN113388747A (en) * | 2021-04-29 | 2021-09-14 | 百色市广百金属材料有限公司 | Novel aluminum-zirconium-rare earth ternary aluminum alloy additive and preparation method thereof |
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Application publication date: 20160727 |