CN105543586A - Er-containing cast aluminum-silicon alloy with high impact toughness - Google Patents
Er-containing cast aluminum-silicon alloy with high impact toughness Download PDFInfo
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- CN105543586A CN105543586A CN201610130553.8A CN201610130553A CN105543586A CN 105543586 A CN105543586 A CN 105543586A CN 201610130553 A CN201610130553 A CN 201610130553A CN 105543586 A CN105543586 A CN 105543586A
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D21/00—Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
- B22D21/02—Casting exceedingly oxidisable non-ferrous metals, e.g. in inert atmosphere
- B22D21/04—Casting aluminium or magnesium
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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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- Mechanical Engineering (AREA)
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- Physical Vapour Deposition (AREA)
Abstract
The invention discloses an Er-containing cast aluminum-silicon alloy with high impact toughness and belongs to the technical field of metal alloys. The provided alloy comprises alloy components in percentage by weight as follows: 6.7%-7.3% of Si, 0.32%-0.40% of Mg, 0.08%-0.15% of Ti, 0.08%-0.25% of Er, 0.005% of B, less than 0.13% of Fe and the balance of Al and impurities, wherein the total quantity of the impurities doesn't exceed 0.02%. A rare earth element Er is added, so that eutectic silicon and alpha crystal grains are refined, and the impact toughness (ak) is improved by 56% while compared with that of an ordinary cast aluminum-silicon alloy. Thus, Er is expected to be an effective alloy element for improving the impact toughness of the aluminum-silicon alloy.
Description
Technical field
The invention belongs to field of metal alloy technology, be specifically related to the cast Al-Si alloy adding Er.
Background technology
Cast Al-Si alloy is because of its excellent castability, and corrosion resistance etc. become the most widely used cast aluminium alloy, are widely used in automobile component.Impelling strength is the ability of material repels shock load, it is one of key property of material, and the current research for cast Al-Si alloy impelling strength is relatively less, the raising of rare earth element to aluminium alloy over-all properties has remarkable effect, wherein Er has crystal grain thinning and long-acting metamorphism, for cast Al-Si alloy performance, there is certain active effect, but corresponding research is lacked for the impact of the particularly On Impact Toughness of the cast Al-Si alloy containing Er.
Summary of the invention
The object of the invention is to provide a kind of cast Al-Si alloy adding the high impact toughness of Er, improves the impact property, particularly casting die temperature 450 DEG C ~ 500 DEG C of aluminum silicon alloy, under natural air cooling technique, can also improve the impact property of aluminum silicon alloy further.Comprehensive cost factor, Er content is 0.2% time, and impelling strength improves 56% relative to conventional cast aluminum silicon alloy.
A kind of high impact toughness cast Al-Si alloy containing Er, it is characterized in that, in alloy, each alloy compositions and weight percent thereof are: the content of Si is 6.7 ~ 7.3%, the content of Mg is 0.32 ~ 0.40%, the content of the content of Ti to be the content of 0.08 ~ 0.15%, Er be 0.08 ~ 0.25%, B is 0.005%, the content of Fe is not more than 0.13%, and surplus is the impurity that Al and total amount are no more than 0.02%.
The weight percent of alloy middle-weight rare earths Er most preferably 0.2%.
The cast Al-Si alloy of interpolation Er provided by the present invention, adopt the preparation of plumbago crucible resistance furnace: join in cast Al-Si alloy by the Al-6Er master alloy of vacuum melting, modifying ingredients, in 760 DEG C ~ 800 DEG C meltings, again in 700 DEG C ~ 720 DEG C casting, die temperature 450 DEG C ~ 500 DEG C, obtains alloy cast ingot after air cooling.
Aluminium alloy provided by the present invention, according to aluminium alloy automobile hub explained hereafter, can be used as aluminum alloy wheel hub material.
The present invention has following beneficial effect:
Present invention adds rare earth element er and Ti, crystal grain obtains refinement, impelling strength (a
k) obviously promote.Deducibility thus, Er is expected to become the effective alloying element improving cast Al-Si alloy impelling strength, die temperature 450 DEG C ~ 500 DEG C, the technique obtaining alloy cast ingot after air cooling meets aluminium alloy wheel hub actual production processing condition completely, does not add rare earth aluminium alloy wheel hub performance boost 56% after adding rare earth element than aluminium alloy wheel hub manufacturer production.
Accompanying drawing explanation
Fig. 1: the solution treatment of the embodiment of the present invention (different Er addition) and the metallographic structure of simulation baking vanish ageing treatment.A) embodiment 1, b) embodiment 2, c) embodiment 3.
Fig. 2: the solution treatment of the embodiment of the present invention (different Er addition) and simulation baking vanish ageing treatment impelling strength comparison diagram.
Embodiment
Below in conjunction with the drawings and the specific embodiments, the invention will be further described, but the present invention is not limited to following examples.
Embodiment 1
By Al-7.2Si-7Ti (6.767kg), Al (302.752kg), Al-24Si (131.25kg) joins in resistance furnace and carries out melting, Heating temperature 760 DEG C ~ 800 DEG C, treat Al-7.2Si-7Ti, Al, Al-24Si alloy melting is complete, refining removes the gred, add the Al-6Er master alloy (7.5kg) after preheating, Al-8B master alloy (0.306kg), high purity magnesium (1.425kg), after melting completely Deng alloy, test melt hydrogen content and stokehold composition detection, composition accurately adopts argon gas degasification afterwards, stir, degasification is terminated after test hydrogen richness reaches target value, again in 700 DEG C ~ 720 DEG C casting, die temperature 450 DEG C ~ 500 DEG C, the cast Al-Si alloy ingot casting containing Er is obtained after natural air cooling.
Embodiment 2
By Al-7.2Si-7Ti (6.767kg), Al (299.002kg), Al-24Si (131.25kg) joins in resistance furnace and carries out melting, Heating temperature 760 DEG C ~ 800 DEG C, treat Al-7.2Si-7Ti, Al, Al-24Si alloy melting is complete, refining removes the gred, add the Al-6Er master alloy (11.25kg) after preheating, Al-8B master alloy (0.306kg), high purity magnesium (1.425kg), after melting completely Deng alloy, test melt hydrogen content and stokehold composition detection, composition accurately adopts argon gas degasification afterwards, stir, degasification is terminated after test hydrogen richness reaches target value, again in 700 DEG C ~ 720 DEG C casting, die temperature 450 DEG C ~ 500 DEG C, the cast Al-Si alloy ingot casting containing Er is obtained after natural air cooling.
Embodiment 3
By Al-7.2Si-7Ti (6.767kg), Al (295.253kg), Al-24Si (131.25kg) joins in resistance furnace and carries out melting, Heating temperature 760 DEG C ~ 800 DEG C, treat Al-7.2Si-7Ti, Al, Al-24Si alloy melting is complete, refining removes the gred, add the Al-6Er master alloy (15kg) after preheating, Al-8B master alloy (0.306kg), high purity magnesium (1.425kg), after melting completely Deng alloy, test melt hydrogen content and stokehold composition detection, composition accurately adopts argon gas degasification afterwards, stir, degasification is terminated after test hydrogen richness reaches target value, again in 700 DEG C ~ 720 DEG C casting, die temperature 450 DEG C ~ 500 DEG C, the cast Al-Si alloy ingot casting containing Er is obtained after natural air cooling.
The ingot casting obtained in above-mentioned 3 examples is taken out in 25s after 540 DEG C/320min solution treatment, ingot casting is put in hardening in water temperature 85 DEG C of water, by simulation baking vanish ageing treatment (130 DEG C × 160min+140 DEG C × 30min+190 DEG C × 45min+155 DEG C × 90min).According to GB/T229-2007, v-notch impact test piece is processed into ingot casting after process, Charpy pendulum impact test machine is tested the shock absorption energy of different Er content alloy, obtains impelling strength with impelling strength formulae discovery, as shown in table 1.
As can be seen from Table 1, Er can raising in various degree through the impelling strength of solution treatment and simulation baking vanish ageing treatment cast Al-Si alloy, and when Er content is 0.2%, obviously promoted, can see from accompanying drawing 1, after adding rare earth element er, eutectic silicon becomes corynebacterium from needle-like, tissue obtains refinement, and accompanying drawing 2 can see that impelling strength improves.
The cast Al-Si alloy solution treatment of table 1 different erbium content and simulation baking vanish ageing treatment state impelling strength
。
Claims (4)
1. the high impact toughness cast Al-Si alloy containing Er, it is characterized in that, in alloy, each alloy compositions and weight percent thereof are: the content of Si is 6.7 ~ 7.3%, the content of Mg is 0.32 ~ 0.40%, the content of the content of Ti to be the content of 0.08 ~ 0.15%, Er be 0.08 ~ 0.25%, B is 0.005%, the content of Fe is not more than 0.13%, and surplus is the impurity that Al and total amount are no more than 0.02%.
2., according to a kind of high impact toughness cast Al-Si alloy containing Er according to claim 1, it is characterized in that, the weight percent of alloy middle-weight rare earths Er is 0.2%.
3. the preparation method of a kind of high impact toughness cast Al-Si alloy containing Er according to claim 1, it is characterized in that, adopt the preparation of plumbago crucible resistance furnace, the Al-6Er master alloy of vacuum melting is joined in cast Al-Si alloy, modifying ingredients, in 760 DEG C ~ 800 DEG C meltings, then in 700 DEG C ~ 720 DEG C casting, die temperature 450 DEG C ~ 500 DEG C, obtains alloy cast ingot after air cooling.
4. the high impact toughness cast Al-Si alloy containing Er described in claim 1 or 2 is as aluminium alloy automobile hub material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610130553.8A CN105543586A (en) | 2016-03-08 | 2016-03-08 | Er-containing cast aluminum-silicon alloy with high impact toughness |
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| CN201610130553.8A CN105543586A (en) | 2016-03-08 | 2016-03-08 | Er-containing cast aluminum-silicon alloy with high impact toughness |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106435295A (en) * | 2016-11-07 | 2017-02-22 | 江苏理工学院 | Rare earth element erbium-doped cast aluminum alloy and preparation method therefor |
| CN107190185A (en) * | 2017-05-02 | 2017-09-22 | 嘉禾福顺机械实业有限公司 | A kind of low temperature resistant pump valve alloy material and preparation method thereof |
| CN108034870A (en) * | 2017-12-11 | 2018-05-15 | 南昌大学 | A kind of pack alloy of high-strength and high ductility and preparation method thereof |
| CN108179329A (en) * | 2017-12-04 | 2018-06-19 | 江苏大学 | A kind of method for improving cast Al-Si alloy rare earth elements microalloying effect |
| CN108396203A (en) * | 2018-05-04 | 2018-08-14 | 上海康速金属材料有限公司 | Rare earth er element enhances the special AlSi10Mg Al alloy powders of SLM and its application |
| CN108467978A (en) * | 2018-03-08 | 2018-08-31 | 常州市南方驱动技术有限公司 | A kind of high ferro gear-box high performance aluminium materials and preparation method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103146961A (en) * | 2013-03-08 | 2013-06-12 | 河南省银湖铝业有限责任公司巩义分公司 | Alloy ingot for automotive hub and production method thereof |
-
2016
- 2016-03-08 CN CN201610130553.8A patent/CN105543586A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103146961A (en) * | 2013-03-08 | 2013-06-12 | 河南省银湖铝业有限责任公司巩义分公司 | Alloy ingot for automotive hub and production method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 石伟和等: "稀土Er 对A356 铝合金组织与性能的影响", 《广东化工》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106435295A (en) * | 2016-11-07 | 2017-02-22 | 江苏理工学院 | Rare earth element erbium-doped cast aluminum alloy and preparation method therefor |
| CN107190185A (en) * | 2017-05-02 | 2017-09-22 | 嘉禾福顺机械实业有限公司 | A kind of low temperature resistant pump valve alloy material and preparation method thereof |
| CN107190185B (en) * | 2017-05-02 | 2019-02-22 | 嘉禾福顺机械实业有限公司 | A kind of low temperature resistant pump valve alloy material and preparation method thereof |
| CN108179329A (en) * | 2017-12-04 | 2018-06-19 | 江苏大学 | A kind of method for improving cast Al-Si alloy rare earth elements microalloying effect |
| CN108179329B (en) * | 2017-12-04 | 2020-01-03 | 江苏大学 | Method for improving microalloying effect of rare earth elements in cast aluminum-silicon alloy |
| CN108034870A (en) * | 2017-12-11 | 2018-05-15 | 南昌大学 | A kind of pack alloy of high-strength and high ductility and preparation method thereof |
| CN108467978A (en) * | 2018-03-08 | 2018-08-31 | 常州市南方驱动技术有限公司 | A kind of high ferro gear-box high performance aluminium materials and preparation method |
| CN108396203A (en) * | 2018-05-04 | 2018-08-14 | 上海康速金属材料有限公司 | Rare earth er element enhances the special AlSi10Mg Al alloy powders of SLM and its application |
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Application publication date: 20160504 |