CN103451488B - Iron-containing Al-30Si aluminum alloy and preparation technique thereof - Google Patents
Iron-containing Al-30Si aluminum alloy and preparation technique thereof Download PDFInfo
- Publication number
- CN103451488B CN103451488B CN201310065624.7A CN201310065624A CN103451488B CN 103451488 B CN103451488 B CN 103451488B CN 201310065624 A CN201310065624 A CN 201310065624A CN 103451488 B CN103451488 B CN 103451488B
- Authority
- CN
- China
- Prior art keywords
- alloy
- minutes
- silicon
- purity
- aluminum alloy
- 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.)
- Expired - Fee Related
Links
Abstract
The invention discloses an iron-containing Al-30Si aluminum alloy and a preparation technique thereof. The high-silicon aluminum alloy is prepared by pouring an aluminum alloy molten mass with 750 DEG C into a metal mold with 200 DEG C in an atmospheric environment. The Al-30Si mother alloy is prepared by the following steps: smelting industrial pure aluminum with the purity of higher than 99.8 Wt% and silicon metal with the purity of higher than 99.5 Wt% in a graphite crucible by using a well-type resistance furnace, keeping the temperature at 900 DEG C for 4 hours, carrying out refining and degassing on the alloy liquid with hexachloroethane at 750 DEG C, and keeping the temperature for 30 minutes. The element iron is alloyed by adding a Al-10Fe alloy at 780 DEG C and keeping the temperature for 30 minutes. The high-silicon aluminum alloy is composed of primary silicon, eutectic silicon, alpha-Al, Al-Fe and other phases, and comprises the following chemical components: 30.0 Wt% of Si, 0.2-1.4 Wt% of Fe and the balance of Al. The tensile strength is 180.4-222.2 MPa, the hardness is 38.6-52.8 HBW, and the resistivity is 0.12-0.23 ohm m.
Description
Technical field
The present invention relates to a kind of iron content Al-30Si aluminium alloy and preparation technology thereof.
Background technology
High silicon Al-Si alloy is due to its specific tenacity and hardness is high, density is little, anti-corrosion and wear resisting property is strong, high-temperature behavior is good, linear expansivity is little, the capacity of heat transmission is strong, cost is low, is the ideal material of engine piston, accurate wear part and electronic packing piece.But silumin due to primary silicon thick and show fragility, its application is restricted.Ferro element adds in silumin, the pattern of primary silicon and Eutectic Silicon in Al-Si Cast Alloys, size and distribution can be improved on the one hand, the performance of silumin can be improved, on the other hand because Fe and Al forms Al-Fe high-temperature-phase, can further improve the high-temperature behavior of silumin.Therefore, prepare iron content silumin to have great importance.
Summary of the invention
The object of the present invention is to provide a kind of iron content Al-30Si aluminium alloy and preparation technology thereof.
The object of the invention is to be achieved through the following technical solutions: a kind of iron content Al-30Si aluminium alloy, it is characterized in that, commercial-purity aluminium (purity >99.8Wt%) and silicon metal (purity >99.5Wt%) is comprised the steps: to put into plumbago crucible, 450 DEG C are warmed up to the heating rate of 10 DEG C/min with well formula resistance furnace, then be warmed up to 900 DEG C of insulations 4 hours with the heating rate of 5 DEG C/min and stir 5 minutes, cool to the speed of 5 DEG C/min hexachloroethane alloy liquid that 750 DEG C of employing plunging add 0.5Wt% again to carry out refining degasification and be incubated 30 minutes, again with the temperature rise rate of 5 DEG C/min be warmed up to 780 DEG C skim add Al-10Fe alloy and stir 5 minutes insulation within 30 minutes, carry out alloying, then with the ramp of 5 DEG C/min to 750 DEG C of insulations 15 minutes and skim, aluminium alloy being poured into temperature is prepare in the metal pattern of 200 DEG C that diameter is 20mm, length is the alloy bar of 200mm.
The product that the present invention makes uses X-ray diffractometer (XRD) and energy spectrometer (EDS) to detect the kind of phase respectively, with scanning electronic microscope (SEM) tissues observed pattern, size and distribution, tensile strength and yield strength is measured with universal electrical trier, measure hardness with digital brinell hardness tester, use four electrode method measured resistivity.
The chemical composition of iron content silumin of the present invention is 30.0Wt%Si, 0.2-1.4Wt%Fe, other is Al, and its tensile strength is 180.4-222.2MPa, hardness is 38.6-52.8HBW, resistivity is 0.12-0.23 Ω m.
Embodiment
According to specific embodiment, the invention will be further described below:
Embodiment 1
Weigh in the balance and get silicon metal 450g, commercial-purity aluminium 1050g and Al-10Fe alloy 30g, commercial-purity aluminium and silicon metal are put into plumbago crucible, plumbago crucible is put into well formula resistance furnace, 450 DEG C are warmed up to the heating rate of 10 DEG C/min, then be warmed up to 900 DEG C of insulations 4 hours and stir 5 minutes with the heating rate of 5 DEG C/min, then cool to 750 DEG C of employing plunging with the speed of 5 DEG C/min and add 7.5g hexachloroethane alloy liquid and carry out refining degasification and be incubated 30 minutes; Again with the ramp of 5 DEG C/min to 780 DEG C skim add 30gAl-10Fe alloy and stir 5 minutes insulation within 30 minutes, carry out alloying; Then with the ramp of 5 DEG C/min to 750 DEG C of insulations 15 minutes and skim, aluminium alloy being poured into temperature is prepare in the metal pattern of 200 DEG C that diameter is 20mm, length is the alloy bar of 200mm.Its tensile strength is 183.6MPa, hardness is 42.5HBW, resistivity is 0.12 Ω m.
Embodiment 2
Weigh in the balance and get silicon metal 450g, commercial-purity aluminium 1050g and Al-10Fe alloy 150g, commercial-purity aluminium and silicon metal are put into plumbago crucible, plumbago crucible is put into well formula resistance furnace, 450 DEG C are warmed up to the heating rate of 10 DEG C/min, then be warmed up to 900 DEG C of insulations 4 hours and stir 5 minutes with the heating rate of 5 DEG C/min, then cool to 750 DEG C of employing plunging with the speed of 5 DEG C/min and add 7.5g hexachloroethane alloy liquid and carry out refining degasification and be incubated 30 minutes; Again with the ramp of 5 DEG C/min to 780 DEG C skim add 150gAl-10Fe alloy and stir 5 minutes insulation within 30 minutes, carry out alloying; Then with the ramp of 5 DEG C/min to 750 DEG C of insulations 15 minutes and skim, aluminium alloy being poured into temperature is prepare in the metal pattern of 200 DEG C that diameter is 20mm, length is the alloy bar of 200mm.Its tensile strength is 180.4MPa, hardness is 52.8HBW, resistivity is 0.20 Ω m.
Embodiment 3
Weigh in the balance and get silicon metal 450g, commercial-purity aluminium 1050g and Al-10Fe alloy 210g, commercial-purity aluminium and silicon metal are put into plumbago crucible, plumbago crucible is put into well formula resistance furnace, 450 DEG C are warmed up to the heating rate of 10 DEG C/min, then be warmed up to 900 DEG C of insulations 4 hours and stir 5 minutes with the heating rate of 5 DEG C/min, then cool to 750 DEG C of employing plunging with the speed of 5 DEG C/min and add 7.5g hexachloroethane alloy liquid and carry out refining degasification and be incubated 30 minutes; Skim to add 210gAl-10Fe alloy and stir 5 minutes and be incubated 30 minutes to 780 DEG C with the ramp of 5 DEG C/min again and carry out alloying; Then with the ramp of 5 DEG C/min to 750 DEG C of insulations 15 minutes and skim, aluminium alloy being poured into temperature is prepare in the metal pattern of 200 DEG C that diameter is 20mm, length is the alloy bar of 200mm.Its tensile strength is 222.2MPa, hardness is 38.6HBW, resistivity is 0.23 Ω m.
Claims (2)
1. the preparation technology of an iron content Al-30Si aluminium alloy, the chemical composition of described aluminium alloy is 30.0Wt%Si, 0.2-1.4Wt%Fe, other is Al, it is characterized in that, purity >99.8Wt% commercial-purity aluminium and purity >99.5Wt% silicon metal is comprised the steps: to put into plumbago crucible, 450 DEG C are warmed up to the heating rate of 10 DEG C/min with well formula resistance furnace, then be warmed up to 900 DEG C of insulations 4 hours with the heating rate of 5 DEG C/min and stir 5 minutes, cool to the speed of 5 DEG C/min hexachloroethane alloy liquid that 750 DEG C of employing plunging add 0.5Wt% again to carry out refining degasification and be incubated 30 minutes, again with the ramp of 5 DEG C/min to 780 DEG C skim add Al-10Fe alloy and stir 5 minutes insulation within 30 minutes, carry out alloying, then cool to 750 DEG C of insulations 15 minutes and skim with the speed of 5 DEG C/min, aluminium alloy being poured into temperature is prepare in the metal pattern of 200 DEG C that diameter is 20mm, length is the alloy bar of 200mm.
2. the preparation technology of aluminium alloy according to claim 1, is characterized in that, the tensile strength of described aluminium alloy is 180.4-222.2MPa, hardness is 38.6-52.8HBW, resistivity is 0.12-0.23 Ω m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310065624.7A CN103451488B (en) | 2013-03-01 | 2013-03-01 | Iron-containing Al-30Si aluminum alloy and preparation technique thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310065624.7A CN103451488B (en) | 2013-03-01 | 2013-03-01 | Iron-containing Al-30Si aluminum alloy and preparation technique thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103451488A CN103451488A (en) | 2013-12-18 |
| CN103451488B true CN103451488B (en) | 2015-06-10 |
Family
ID=49734317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310065624.7A Expired - Fee Related CN103451488B (en) | 2013-03-01 | 2013-03-01 | Iron-containing Al-30Si aluminum alloy and preparation technique thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103451488B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101629251A (en) * | 2008-07-16 | 2010-01-20 | 贵州红林机械有限公司 | Method for smelting high-silicon aluminum alloy |
| 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 |
| CN102337417A (en) * | 2011-09-09 | 2012-02-01 | 合肥工业大学 | Method for refining hypereutectic aluminum-silicon alloy primary crystal silicon tissues |
| CN102373351A (en) * | 2011-10-26 | 2012-03-14 | 昆明理工大学 | Method for preparing high-purity silicon and aluminum silicon alloy by electromagnetic method |
-
2013
- 2013-03-01 CN CN201310065624.7A patent/CN103451488B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101629251A (en) * | 2008-07-16 | 2010-01-20 | 贵州红林机械有限公司 | Method for smelting high-silicon aluminum alloy |
| 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 |
| CN102337417A (en) * | 2011-09-09 | 2012-02-01 | 合肥工业大学 | Method for refining hypereutectic aluminum-silicon alloy primary crystal silicon tissues |
| CN102373351A (en) * | 2011-10-26 | 2012-03-14 | 昆明理工大学 | Method for preparing high-purity silicon and aluminum silicon alloy by electromagnetic method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103451488A (en) | 2013-12-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103451486B (en) | A kind of Al-30Si aluminium alloy containing Sr, B, Ti and Zr and preparation technology thereof | |
| CN101775530B (en) | Hypereutectic al-si alloy piston material | |
| CN102994834B (en) | Heatproof magnesium alloy containing Nb | |
| CN103122431B (en) | Preparation method for magnesium-lithium alloy with enhanced long-period structure phase | |
| CN105838936B (en) | A kind of high heat conduction cast aluminium alloy gold and preparation method thereof | |
| Dong et al. | Microstructures and properties of A356–10% SiC particle composite castings at different solidification pressures | |
| CN102876933A (en) | Al-Si-Nd rare-earth cast aluminum alloy and preparation method thereof | |
| CN100424210C (en) | Compression casting heat-stable magnesium alloy | |
| CN106244874B (en) | A kind of dedicated heat-resisting aluminium alloy of high-speed EMUs gear case body and preparation method thereof | |
| CN101748299A (en) | Method for manufacturing cast magnesium alloy | |
| CN103451487B (en) | A kind of containing magnesium Al-30Si aluminium alloy and preparation technology thereof | |
| CN103540812A (en) | Aluminum alloy material for engine cylinder cover and preparation method thereof | |
| CN107641741A (en) | A kind of high heat conduction aluminium alloy | |
| CN101358312A (en) | High elongation rate and high-strength alloy aluminium end cap for multiple unit and casting method thereof | |
| CN103993213A (en) | Method for preparing dual special structure combined reinforced Mg-Zn-Y alloy | |
| CN102758108B (en) | Al-Si-Mg-Sm rare earth cast aluminum alloy and preparation method thereof | |
| CN101235454A (en) | Quasi-crystal enhancement Mg-Zn-Er heat-resistant magnesium alloy and preparation method thereof | |
| CN104946947A (en) | Method for preparing high-strength magnesium-lithium alloy by quick setting by using copper mold and copper mold | |
| CN111979455B (en) | Die-casting aluminum alloy and preparation method and application thereof | |
| CN103451488B (en) | Iron-containing Al-30Si aluminum alloy and preparation technique thereof | |
| CN105543604A (en) | Magnesium alloy, and preparation method and application thereof | |
| CN103305737B (en) | Grain refinement type cast magnesium alloy and preparation method thereof | |
| CN102146541B (en) | Al-Si-Cu-Mg-xLa rare earth die casting aluminum alloy | |
| CN102690964B (en) | Alterant for hypereutectic aluminum-silicon alloy primary silicon and preparation method thereof | |
| CN104561709A (en) | High-creep-performance casting magnesium alloy and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150610 Termination date: 20180301 |