CN1928136A - High strength high toughness casting aluminum alloy - Google Patents
High strength high toughness casting aluminum alloy Download PDFInfo
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- CN1928136A CN1928136A CN 200610017102 CN200610017102A CN1928136A CN 1928136 A CN1928136 A CN 1928136A CN 200610017102 CN200610017102 CN 200610017102 CN 200610017102 A CN200610017102 A CN 200610017102A CN 1928136 A CN1928136 A CN 1928136A
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Abstract
The present invention is one kind of high strength and high toughness cast aluminum alloy with high comprehensive mechanical performance. The cast aluminum alloy consists of Cu 4.5-7.0 wt%, V 0.05-0.3 wt%, Mn 0.3-0.45 wt%, Ti 0.15-0.35 wt%, B 0.005-0.06 wt%, Cd 0.15-0.25 wt%, Zr 0.05-0.2 wt%, Pr 0.03-0.7 wt% and Al for the rest. The cast aluminum alloy has elongation of 13.5 %, and strength and toughness higher than that of ZL205A alloy when it has highest tensile strength 520 Mpa. The cast aluminum alloy has tensile strength up to 505 MPa, 100 MPa higher that of high toughness 205A alloy when it has elongation of 16.5 %. Therefore, the high strength and high toughness cast aluminum alloy of the present invention has high comprehensive mechanical performance obviously higher that of available cast aluminum alloy.
Description
Technical field
The present invention relates to cast aluminium alloy, particularly a kind of high strength high toughness casting aluminum alloy that has advantages of higher tensile strength and unit elongation comprehensive mechanical property simultaneously.
Background technology
Current, pay much attention to the research and development of aldural both at home and abroad.Cast aluminium alloy is as traditional metallic substance, and to have density low because of it, specific tenacity height, manufactured parts flexibly, simple, be easy to characteristics such as small serial production, be widely used in industries such as Aeronautics and Astronautics, automobile, machinery.Along with the development of modern industry and national defence, to cast aluminium alloy, especially have property, as have high strength, high tenacity, good wear resistance and the cast aluminium alloy of erosion resistance, demand is increasing.Through the development of decades, high strength cast aluminum alloys has formed complete series, and performance tends towards stability, and production method is becoming better and approaching perfection day by day, and becomes alloy system indispensable in the material field, and has obtained to use widely in automobile, aerospace industry.Usually, the tensile strength of high strength cast aluminum alloys generally reaches 300～500MPa, but unit elongation only is 1%～10%.The sixties in 20th century, aeronautical material research institute in BeiJing, China's succeeded in developing the ZL205A alloy to the seventies.The maximum pulling strength of ZL205A (T6 thermal treatment) is 510MPa, is the highest cast aluminium alloy material of intensity in reporting at present, and its unit elongation is 7%; The nineties in 20th century, the Beijing Research Inst. of Aeronautic Material develops a kind of cast aluminium alloy material (claiming high-ductility 205A) unit elongation close with the ZL205A composition, that toughness is good especially and reaches 19%～23%, and tensile strength is 385～405MPa; Along with the development of the industrial production and the modernization of national defense, the requirement that reduces structural part weight is urgent day by day, and the field of application aluminium alloy more and more widely.For example; fast development along with Aeronautics and Astronautics and automotive industry; for improving the speed of a motor vehicle, reducing oil consumption, save energy and protection environment; the pressure that reduces bicycle weight is increasing; cast aluminium alloy will further enlarge in the range of application of Aeronautics and Astronautics and automobile industry; not only bear static load to substitute in the main components, and bear the iron and steel parts (as the automobile chassis support etc.) of great impact and vibration, thereby the intensity and the toughness of cast aluminium alloy are had higher requirement.Therefore, be badly in need of a kind of cast aluminium alloy that has high-intensity high-tenacity simultaneously of invention at present.
Summary of the invention
The objective of the invention is to propose the high-strength/tenacity aluminum alloy that a kind of comprehensive mechanical property is higher than present cast aluminium alloy, promptly this alloy not only has advantages of higher tensile strength, also has higher unit elongation simultaneously.
High strength high toughness casting aluminum alloy of the present invention, be made up of following compositions in weight percentage: Cu 4.5～7.0; V 0.05～0.3; Mn 0.3～0.45; Ti 0.15～0.35; B 0.005～0.06; Cd 0.15～0.25; Zr 0.05～0.2; Pr 0.03～0.7; The Al surplus.
The present invention is on the composition basis of ZL205A alloy, by elements such as optimization Cu, Mn, and adds rare earth element Pr, to change the tissue of cast aluminium alloy, reaches the intensity and the unit elongation that improve cast aluminium alloy simultaneously.At present, the high combination property of the tensile strength of World Report cast aluminium alloy and unit elongation is respectively: high-strength ZL205A tensile strength of alloys is 510MPa, and unit elongation is 7%; High-ductility 205A tensile strength of alloys is 385～405MPa, and unit elongation is 19～23%.When the cast aluminium alloy maximum pulling strength of the present invention's development reached 520Mpa, its unit elongation was 13.5%, and its intensity and toughness all are higher than the ZL205A alloy; The cast aluminium alloy of the present invention's development is when unit elongation is 16.5% (being lower than high-ductility 205A alloy slightly), and its tensile strength reaches 505MPa, has improved 100MPa than high-ductility 205A tensile strength of alloys.Therefore, the comprehensive mechanical property of novel high-strength/tenacity cast aluminium alloy of the present invention is apparently higher than the cast aluminium alloy of present report.
Description of drawings
Fig. 1 is the tensile stress strain curve of embodiment 1 composition cast aluminium alloy;
Fig. 2 is the tensile stress strain curve of embodiment 2 composition cast aluminium alloys;
Fig. 3 is the tensile stress strain curve of embodiment 3 composition cast aluminium alloys;
Fig. 4 is the tensile stress strain curve of embodiment 4 composition cast aluminium alloys.
Embodiment
By the following examples the present invention is described in further detail.
The preparation weight percent content is Cu:4.5～5.0; V:0.05～0.1; Mn:0.3～0.35; Ti:0.15～0.2; B:0.005～0.015; Cd:0.15～0.2; Zr:0.05～0.1; Pr:0.03; Al: the cast aluminium alloy of surplus.
Prepare cast aluminium alloy method materials routinely, will all the calculated amount raw materials except that the Pr element be blended in the electrical crucible after the fusing, about 850 ℃, add nontoxic refining agent refining, and under this temperature, left standstill 5～10 minutes; Add calculated amount rare earth element Pr again in the alloy liquation after refining; Left standstill after the stirring 10 minutes, 850 ℃ of cast down.After T6 (solid solution aging) thermal treatment, produce tension specimen.Cast aluminium alloy tensile stress strain curve under this composition as shown in Figure 1.Its tensile strength sigma
bBe 480～495MPa, unit elongation δ is 10.5～12.0%.
The preparation weight percent content is Cu:5.5～6.0; V:0.15～0.2; Mn:0.35～0.4; Ti:0.2～0.3; B:0.02～0.03; Cd:0.15～0.2; Zr:0.10～0.15; Pr:0.45; Al: the cast aluminium alloy of surplus.
The preparation method is with embodiment 1, and the cast aluminium alloy tensile stress strain curve under this composition as shown in Figure 2.Its tensile strength sigma
bBe 505～520MPa, unit elongation δ is 13.5～16.5%.
The preparation weight percent content is Cu:6.5～7.0; V:0.25～0.3; Mn:0.4～0.45; Ti:0.3～0.35; B:0.045～0.06; Cd:0.2～0.25; Zr:0.15～0.2; Pr:0.7; Al: the cast aluminium alloy of surplus.
The preparation method is with embodiment 1, and the cast aluminium alloy tensile stress strain curve under this composition as shown in Figure 3.Its tensile strength sigma
bBe 460～485MPa, unit elongation δ is 12.5～13.5%.
The preparation weight percent content is Cu:4.5～5.0; V:0.05～0.1; Mn:0.3～0.35; Ti:0.15～0.2; B:0.005～0.015; Cd:0.15～0.2; Zr:0.05～0.1; Pr:0.45; Al: the cast aluminium alloy of surplus.
The preparation method is with embodiment 1.Its tensile strength sigma
bBe 490～500MPa, unit elongation δ is 13.5～15.5%.
The preparation weight percent content is Cu:6.5～7.0; V:0.25～0.3; Mn:0.4～0.45; Ti:0.3～0.35; B:0.045～0.06; Cd:0.2～0.25; Zr:0.15～0.2; Pr:0.45; Al: the cast aluminium alloy of surplus.The preparation method is with embodiment 1.Its tensile strength sigma
bBe 485～505MPa, unit elongation δ is 11.5～12.5%.
Comparative experimental example 6
The preparation weight percent content is Cu:4.5～5.0; V:0.05～0.1; Mn:0.3～0.35; Ti:0.15～0.2; B:0.005～0.015; Cd:0.15～0.2; Zr:0.05～0.1; Al: the cast aluminium alloy of surplus (not containing the Pr element).
Preparation according to a conventional method, the cast aluminium alloy tensile stress strain curve under this composition as shown in Figure 4.Its tensile strength sigma
bBe 400～440MPa, unit elongation δ is 5.5～7%.
Very clearly from the tensile stress strain curve of the cast aluminium alloy that adds and do not add rare earth element find out, the slope of the tensile stress strain curve of the cast aluminium alloy of adding rare earth element is steeper, illustrate that this alloy has bigger Young's modulus, just have rigidity preferably, and it is less not add the Young's modulus of cast aluminium alloy of rare earth element; Simultaneously, the adding rare earth element is also higher than the yield strength of the cast aluminium alloy that does not add rare earth element.Therefore, the adding rare earth element plays crucial effects to the raising of the comprehensive mechanical property of this cast aluminium alloy.
Claims (1)
1. high strength high toughness casting aluminum alloy, it is characterized in that being made up of following compositions in weight percentage: Cu 4.5～7.0; V 0.05～0.3; Mn 0.3～0.45; Ti 0.15～0.35; B 0.005～0.06; Cd 0.15～0.25; Zr 0.05～0.2; Pr0.03～0.7; The Al surplus.
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| CN100410406C CN100410406C (en) | 2008-08-13 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101805848B (en) * | 2009-09-17 | 2011-07-27 | 贵州华科铝材料工程技术研究有限公司 | Be-Co-RE high-strength heat resistant aluminum alloy material modified with C and preparation method thereof |
| CN103805818A (en) * | 2014-02-14 | 2014-05-21 | 南通曼特威金属材料有限公司 | High-strength and high-toughness aluminum alloy ingot |
| CN103924139A (en) * | 2014-04-25 | 2014-07-16 | 天津那诺机械制造有限公司 | High strength aluminum copper alloy vehicle wheel material and liquid forging forming method |
| CN106191485A (en) * | 2016-08-31 | 2016-12-07 | 中北大学 | ZL205A aluminium alloy and liquid forging forming process structure property uniformity control method thereof |
| CN107267823A (en) * | 2017-07-07 | 2017-10-20 | 江西创迪科技有限公司 | A kind of aviation alloyed aluminium |
| CN108330362A (en) * | 2018-03-26 | 2018-07-27 | 中南大学 | A kind of the high-strength temperature-resistant casting Al-Cu alloy and preparation process of low porosity |
| CN109136692A (en) * | 2018-10-18 | 2019-01-04 | 河北钢研德凯科技有限公司 | Cast aluminium alloy gold and preparation method thereof |
| CN110343895A (en) * | 2019-07-05 | 2019-10-18 | 贵州航天风华精密设备有限公司 | TiB in situ2The preparation method of particle REINFORCED Al Cu based composites |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110176957A1 (en) * | 2008-07-09 | 2011-07-21 | Yun Che | High strength casting aluminum alloy material |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09104940A (en) * | 1995-10-09 | 1997-04-22 | Furukawa Electric Co Ltd:The | High-tensile aluminum-copper base alloy excellent in weldability |
| CN1332052C (en) * | 2005-05-17 | 2007-08-15 | 郑州大学 | Multielement micro alloyed aluminium alloy containing titanium boron rare earth and its manufacturing method |
| CN100372956C (en) * | 2005-12-07 | 2008-03-05 | 苏州有色金属加工研究院 | High-strength aluminium alloy |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101805848B (en) * | 2009-09-17 | 2011-07-27 | 贵州华科铝材料工程技术研究有限公司 | Be-Co-RE high-strength heat resistant aluminum alloy material modified with C and preparation method thereof |
| CN103805818A (en) * | 2014-02-14 | 2014-05-21 | 南通曼特威金属材料有限公司 | High-strength and high-toughness aluminum alloy ingot |
| CN103924139A (en) * | 2014-04-25 | 2014-07-16 | 天津那诺机械制造有限公司 | High strength aluminum copper alloy vehicle wheel material and liquid forging forming method |
| CN103924139B (en) * | 2014-04-25 | 2015-11-25 | 天津那诺机械制造有限公司 | A kind of high-strength aluminum copper alloy wheel material and liquid forging forming method |
| CN106191485A (en) * | 2016-08-31 | 2016-12-07 | 中北大学 | ZL205A aluminium alloy and liquid forging forming process structure property uniformity control method thereof |
| CN107267823A (en) * | 2017-07-07 | 2017-10-20 | 江西创迪科技有限公司 | A kind of aviation alloyed aluminium |
| CN108330362A (en) * | 2018-03-26 | 2018-07-27 | 中南大学 | A kind of the high-strength temperature-resistant casting Al-Cu alloy and preparation process of low porosity |
| CN109136692A (en) * | 2018-10-18 | 2019-01-04 | 河北钢研德凯科技有限公司 | Cast aluminium alloy gold and preparation method thereof |
| CN110343895A (en) * | 2019-07-05 | 2019-10-18 | 贵州航天风华精密设备有限公司 | TiB in situ2The preparation method of particle REINFORCED Al Cu based composites |
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| CN100410406C (en) | 2008-08-13 |
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