CN1184339C - Method for spraying and depositing high silicon aluminium alloy - Google Patents
Method for spraying and depositing high silicon aluminium alloy Download PDFInfo
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- CN1184339C CN1184339C CNB001246607A CN00124660A CN1184339C CN 1184339 C CN1184339 C CN 1184339C CN B001246607 A CNB001246607 A CN B001246607A CN 00124660 A CN00124660 A CN 00124660A CN 1184339 C CN1184339 C CN 1184339C
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Abstract
The present invention provides a novel method for improving the structures and the properties of spray deposition hypereutectic aluminum-silicon alloys, which is suitable for the technical field of material preparation and relates to the preparation process of the spray deposition hypereutectic aluminum-silicon alloys. The present invention is characterized in that when spray deposition technology is used for preparing hypereutectic Al-(16-45%) Si alloys, elements of Fe, Mn are added, and the weight percentage of Mn/Fe is 0.5 to 1; a granular intermetallic compound Al15 (FeMn) 3 Si2 is formed in alloy structures; the formation of an aciform Al-Si-Fe compound is eliminated when Fe is added singly. The present invention has the advantages that the acicular adverse effect on the properties of the alloys is avoided, and simultaneously, the thermal stability of the alloys is increased.
Description
The invention provides the method for the high aluminum silicon alloy of a kind of jet deposition, realized the improvement of tissue and performance, be applicable to technical field of material.
High Si aluminium alloy in the Al-Si system is because of it has low thermal expansivity, high Young's modulus and good wear resistance obtained using widely in automotive industry, electronic industry and aerospace.Yet when adopting traditional casting technique production hypereutectic Al-Si alloy, thick Si has seriously isolated the continuity of matrix mutually, and the intensity of alloy, toughness are significantly descended.The raising speed of cooling can change the form and the distribution of primary crystal Si phase in the hypereutectic Al-Si alloy effectively, has significantly improved the performance of alloy.Plurality of advantages such as reaction-injection moulding rapid solidification silumin has that crystal grain is tiny, homogeneous microstructure, no macrosegregation, density height, good economy performance, degree of oxidation are low is a kind of material with applications well prospect.
In order to improve the microstructure and property of aluminum silicon alloy, usually add alloying element cu, Mg, Fe, Ni, Mn, etc., wherein the main effect of Cu, Mg is to improve normal temperature strength, and Fe, Ni, Mn etc. mainly improve the thermostability of alloy, make alloy can be used as the material of use high temperature under.People such as J Zhou are at " Journal ofmaterials science " (1991; Delivered the article of exercise question 26:5275) for " As-spray-deposited structure ofan Al-20Si-5Fe Osprey preform and its development during subsequent processing ", they studies show that, have formed a large amount of needle-like Al-Si-Fe intermetallic compounds in the jet deposition Al-20Si-5Fe alloy structure.People such as Yuan Xiaoguang are at " Acta Metallurgica Sinica " (1997; Vol.33 No.3:248) delivered the article of " microtexture and the mechanical property of jet deposition Al-Si-Fe-Cu-Mg alloy ", their result of study has confirmed to have formed equally in the alloy structure acicular Al-Si-Fe intermetallic compound, and their existence has improved the hot strength (300 ℃) and the thermostability of alloy significantly.But the quantity of compound between needle-like metal, size and dimension are very unfavorable to fracture toughness property, fatigue strength and the properties for follow of alloy, so the form that changes compound between needle-like metal is necessary.
In jet deposition hypereutectic Al-Si-Fe-Cu-Mg alloy, add the Mn element, utilize the chemical neutralizing effect of Mn and Fe, can form granular Al
15(FeMn)
3Si
2Quaternary compound, when Mn/Fe in the alloy (weight percent)=0.5～1, acicular Al-Si-Fe intermetallic compound is by granular Al
15(FeMn)
3Si
2Replace, thereby avoided between needle-like metal compound to the influence of the mechanical property and the properties for follow of alloy, and improved the hot strength and the structure stability of alloy.
The objective of the invention is to: the method that the high aluminum silicon alloy of a kind of jet deposition is provided, realize the improvement of tissue and performance, Fe, Mn element are added in the transcocrystallized Al-Si alloy, under jet deposition rapid solidification condition, improve in alloy high-temp intensity and the thermostability, avoided the appearance of compound between needle-like metal.
Formation of the present invention: when adopting spray deposition technique to prepare hypereutectic Al-(16～45%) Si alloy, adding Fe, Mn element can improve the use properties of alloy, when the ratio of the weight percentage of Mn and Fe is 0.5-1, formed granular intermetallic compound Al in the alloy structure
15(FeMn)
3Si
2, eliminated the acicular Al-Si-Fe compound that forms when adding Fe merely.The processing parameter of jet deposition is as follows:
| Atomizing gas | Nitrogen |
| Atomizing pressure | (0.5～0.9)MPa |
| The melt overheat degree | (150～300)℃ |
| The deposition distance | (350～450)mm |
The invention has the advantages that: when guaranteeing that the jet deposition transcocrystallized Al-Si alloy has low thermal expansivity, high Young's modulus and good wear resistance, add alloying element Fe, Mn and can improve the thermostability of alloy, eliminated form when adding Fe merely to the disadvantageous needle-like Al-Si-Fe intermetallic compound of material property.
The present invention is further described below in conjunction with accompanying drawing: Fig. 1 is the microtexture of jet deposition hypereutectic Al-Si alloy of the present invention, the scanning electron image.(a) Al-20Si-5Fe-3Cu-1Mg wherein, (b) Al-20Si-5Fe-3Mn-3Cu-1Mg.
Embodiment 1
When utilizing the jet deposition flash set technology to prepare the Al-20Si-5Fe-3Cu-1Mg alloy, a large amount of acicular intermetallic compounds have been formed in the tissue.When adding 1%Mn in alloy, compound changes particulate state between the part needle-like metal; When Mn content reached 3% (Mn/Fe=0.6), acicular Al-Si-Fe intermetallic compound changed granular Al-Si-Fe-Mn quaternary compound into, thereby had eliminated the disadvantageous effect of needle-like relative material fracture toughness property, fatigue property and properties for follow.Fig. 1 is the scanning electron image of jet deposition Al-20Si-5Fe-3Cu-1Mg and Al-20Si-5Fe-3Mn-3Cu-1Mg alloy.
Embodiment 2
Add 3%Mn in the Al-22Si-5Fe-3Cu-1Mg alloy, under jet deposition rapid solidification condition, the alloy deposition base of preparation is after 400 ℃ of hot extrusions (extrusion ratio is 10: 1) and T6 thermal treatment, breaking tenacity under 300 ℃ reaches 324MPa, with the Al-22Si-5Fe-3Cu-1Mg alloy phase ratio for preparing under the same process condition, breaking tenacity has improved 50MPa.
Claims (1)
1, a kind of method of spraying and depositing high silicon aluminium alloy, it is characterized in that: when adopting spray deposition technique to prepare hypereutectic Al-(16～45%) Si alloy, add Fe, Mn element, the ratio of the weight percentage of Mn and Fe is 0.5～1, has formed granular intermetallic compound Al in the alloy structure
15(FeMn)
3Si
2, eliminated the needle-like Al-Si-Mn compound that forms when adding Fe merely; The processing parameter of jet deposition is: atomizing gas: nitrogen, and atomizing pressure: 0.5～0.9Mpa, the solution superheating temperature: 150～300 ℃, deposition distance: 350～450mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001246607A CN1184339C (en) | 2000-09-27 | 2000-09-27 | Method for spraying and depositing high silicon aluminium alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001246607A CN1184339C (en) | 2000-09-27 | 2000-09-27 | Method for spraying and depositing high silicon aluminium alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1345983A CN1345983A (en) | 2002-04-24 |
| CN1184339C true CN1184339C (en) | 2005-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001246607A Expired - Fee Related CN1184339C (en) | 2000-09-27 | 2000-09-27 | Method for spraying and depositing high silicon aluminium alloy |
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| CN (1) | CN1184339C (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100534673C (en) * | 2004-01-29 | 2009-09-02 | 北京科技大学 | Method for preparing Si-Al alloy using spray deposition forming process |
| CN1304620C (en) * | 2005-08-17 | 2007-03-14 | 北京科技大学 | Method for jet deposition formation to preparing lanthanum matrix massive amorphous alloy |
| RU2288292C1 (en) * | 2005-08-22 | 2006-11-27 | Федеральное государственное унитарное предприятие "Научно-производственный центр автоматики и приборостроения им. акад. Н.А. Пилюгина" (ФГУП "НПЦАП") | Aluminum-based powder composite mixture and method of production of such mixture |
| CN102699081B (en) * | 2012-06-06 | 2014-04-23 | 沈阳工业大学 | Semi-solid-state thixotropic extrusion forming method for Al-Si-Fe alloy engine cylinder sleeve |
| CN103966543B (en) * | 2014-05-13 | 2016-03-30 | 中国人民解放军国防科学技术大学 | Aluminium silicon/aluminum silicon carbide composite material and preparation method thereof, electronic packaging device |
| CN103966542B (en) * | 2014-05-13 | 2016-03-30 | 中国人民解放军国防科学技术大学 | Aluminium silicon/aluminum silicon carbide composite material and preparation method thereof, electronic packaging device |
| CN103979995B (en) * | 2014-05-13 | 2015-10-28 | 中国人民解放军国防科学技术大学 | Aluminium silicon/aluminum silicon carbide composite material and preparation method thereof, electronic packaging device |
| CN106435292B (en) * | 2016-08-08 | 2018-05-25 | 长沙博朗思达金属材料有限公司 | A kind of high-strength silumin containing trace rare-earth and its preparation method and application |
| CN106811632A (en) * | 2017-01-11 | 2017-06-09 | 上海工程技术大学 | One kind refinement Al Si Fe Cu Mg alloy structures and preparation method thereof |
| CN110218915B (en) * | 2019-07-05 | 2021-07-20 | 江苏豪然喷射成形合金有限公司 | AlSi20Fe5Ni2Method for producing a blank |
| CN115141959B (en) * | 2021-07-28 | 2023-09-22 | 中南大学 | High-wear-resistance high-strength and high-toughness aluminum-silicon alloy and preparation method thereof |
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2000
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