CN102051511B - Magnesium-zinc-copper magnesium alloy containing cerium - Google Patents
Magnesium-zinc-copper magnesium alloy containing cerium Download PDFInfo
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- CN102051511B CN102051511B CN201110021760A CN201110021760A CN102051511B CN 102051511 B CN102051511 B CN 102051511B CN 201110021760 A CN201110021760 A CN 201110021760A CN 201110021760 A CN201110021760 A CN 201110021760A CN 102051511 B CN102051511 B CN 102051511B
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Abstract
The invention discloses a magnesium-zinc-copper magnesium alloy containing cerium, which is applicable to the field of metal materials. The magnesium-zinc-copper magnesium alloy containing cerium is prepared from the following components in percentage by weight: 6.0-10.0% of Zn, 3.0-10.0% of Cu, 0.15-1.80% of Ce, no more than 0.15% of inevitable impurities and the balance of Mg. Ce is added on the basis of the Mg-Zn-Cu alloy to refine the grain structure, thereby influencing the distribution of Zn and Cu in the alloy, and the type, shape and content of the second phase. The magnesium-zinc-copper magnesium alloy containing cerium has high room-temperature properties; and at room temperature, the tensile strength is not lower than 320 MPa, the yield strength is not lower than 260 MPa, and the elongation percentage is 9-11%.
Description
Technical field
The present invention relates to contain the magnesium-zinc-copper-magnesium alloy of cerium, belong to the metallic substance technical field.
Background technology
Characteristics such as it is little that magnesiumalloy has density, and specific tenacity, specific rigidity are high, and damping vibration attenuation performance and castability are superior and receive the extensive concern of communications and transportation, aerospace and military aspect.The Mg-Zn-Cu alloy is the novel magnesium alloy that grows up the eighties in 20th century.The maximum solid solution degree of Zn in Mg is 6.2%, and solid solubility reduces with temperature and significantly descend, and the Mg-Zn alloy improves its intensity through solid solution aging.The adding of Cu improves the eutectic temperature of Mg-Zn alloy on the one hand; Make its have higher solid solution temperature make Zn and Cu to greatest extent solid solution in magnesium matrix; Change the structure of eutectic phase in the Mg-Zn alloy on the other hand; After adding the Cu element, eutectic structure changes α-Mg+CuMgZn two phases into mutually from α-Mg+MgZn two.The alloy aging sclerization is main relevant with two precipitated phases: β
1' (MgZn
2Bar-shaped) and β
2' (MgZn
2Tabular or plate-like), the adding of Cu significantly improves the concentration of these two kinds of precipitated phases, plays the age hardening effect.
At present, discover Mg-Zn-Cu be alloy have advantages of good casting and weldability can, but this to be alloy must just can reach its best mechanical property after bakingout process.And the research about the Mg-Zn-Cu alloy still is in the starting stage both at home and abroad, and the alloy system of being developed is less.
Summary of the invention
Above-mentioned deficiency to existing Mg-Zn-Cu alloy exists the purpose of this invention is to provide a kind of good castability that has, and intensity is higher, the Mg-Zn-Cu magnesiumalloy that contains Ce that plastic deformation ability is good.
For realizing above-mentioned purpose; The present invention adopts following technical scheme: a kind of magnesium-zinc-copper-magnesium alloy that contains cerium, chemical ingredients that comprises and weight percent 6.0～10.0% Zn thereof, 3.0～10.0% Cu; 0.15～1.80% Ce, surplus is Mg and unavoidable impurities≤0.15%.The present invention adds Ce on Mg-Zn-Cu series magnesium alloy basis, the crystal grain thinning tissue influences Zn, Cu distribution and second facies type, pattern and the content in alloy.The solid solubility of Zn in magnesium is 6.2%, and the Zn content greater than 6.2% increases (MgZn) second phase kind and content in the alloy, and the eutectic temperature of Mg-Zn is 341 ° of C; The adding of Cu improves the eutectic temperature of Mg-Zn, and solid solution temperature improves, and there is the ratio an of the best in Zn/Cu content, makes this eutectic temperature the highest, and the higher limit of selecting Cu here is 10%; The solid solubility of Ce in magnesium is low, is about 0.11%, along with the increase of Ce content, and the alloy grain refinement, but be increased to a certain degree, crystal grain has the trend of alligatoring, therefore selects 1.80% upper limit as Ce content.
Screening formulation of the present invention (mass percent): Zn 6.0%, and Cu 10.0%, and Ce 1.80%, unavoidable impurities≤0.15%, and surplus is Mg.
Compare prior art, the present invention has following beneficial effect:
Owing to add rare earth element ce, changed the crystal structure of Mg-Zn-Cu series magnesium alloy, the mechanics of raising alloy and castability etc.The solid solubility of Ce in magnesium is low, is about 0.11%.Ce enrichment in the liquid phase of the place ahead, interface causes the reduction of liquid equilibrium temperature of solidification in crystallisation process, make the liquid-solid interface forward position produce constitutional supercooling, and nucleation rate increases with condensate depression, so grain refining.And the rare earth compound that generates is assembled at the crystal boundary place, has suppressed the slippage with crystal boundary of growing up of crystal grain, also favourable crystal grain thinning.Microalloy element is bigger to the crystal structure influence of Mg-Zn-Cu alloy, and the adding of Ce changes Zn, distribution and second facies type, pattern and the content of Cu in alloy, thereby influences the casting and the mechanical property of alloy.
The magnesiumalloy that adopts this programme to process has following mechanical property: room temperature tensile strength is not less than 320MPa, and ys is not less than 260MPa, unit elongation 9-11%.Simultaneously, price is lower.
Embodiment
Below in conjunction with the practical implementation method the present invention is described further.
The content of embodiment 1～5 and proportioning (weight percent) are as shown in table 1.
Table 1 embodiment alloy content and proportioning (mass percent)
| Embodiment | Zn | Cu | Ce | Impurity | Mg |
| 1 | 6 | 3 | 1 | ≤0.15 | Surplus |
| 2 | 6 | 6 | 1 | ≤0.15 | Surplus |
| 3 | 6 | 10 | 1.8 | ≤0.15 | Surplus |
| 4 | 10 | 6 | 1.8 | ≤0.15 | Surplus |
| 5 | 6 | 10 | 0.15 | ≤0.15 | Surplus |
The present invention adopts the refining of induction furnace iron mould casting method to get final product according to the proportioning of said embodiment.
The actual effect state property of embodiment 1～5 can be as shown in table 2.
Table 2 embodiment alloy mechanical property
| Embodiment | Room temperature tensile strength MPa | Ys MPa | Unit elongation % |
| 1 | 320 | 260 | 11 |
| 2 | 363 | 294 | 9.8 |
| 3 | 372 | 296 | 10.1 |
| 4 | 367 | 296 | 9 |
| 5 | 354 | 286 | 10.5 |
All embodiment alloy room temperature tensile strength are greater than 320MPa in the table 2, and ys is greater than 260MPa, and the unit elongation scope is at 9-11%.The lower value of room temperature tensile strength and ys realizes that in embodiment 1 this alloy content is: Zn 6.0%, and Cu 3.0%, and Ce 1%, impurity≤0.15, and surplus is Mg.Along with the increase of Cu content, the intensity of alloy increases; Constant at Cu content, when Zn and Ce content all increased simultaneously, the Strength Changes of alloy was little.The adding of different Cu content is bigger to the influence of alloy strength.And the adding of Ce changes Zn, distribution and second facies type, pattern and the content of Cu in alloy, thereby influences the casting and the mechanical property of alloy, but have only when Zn/Cu ratio in certain scope, Ce just can play due effect.
Need to prove at last; Above embodiment is only in order to explain technical scheme of the present invention but not the restriction technologies scheme; Although the applicant specifies the present invention with reference to preferred embodiment, those of ordinary skill in the art should be appreciated that those and technical scheme of the present invention is made amendment or is equal to replacement; And do not break away from the aim and the scope of present technique scheme, all should be encompassed in the middle of the claim scope of the present invention.
Claims (2)
1. magnesium-zinc-copper-magnesium alloy that contains cerium, it is characterized in that: its chemical ingredients and weight percent thereof are following: Zn 6.0～10.0%, and Cu 6.0～10.0%, and Ce 0.15～1.80%, unavoidable impurities≤0.15%, surplus is Mg.
2. according to the said magnesium-zinc-copper-magnesium alloy that contains cerium of claim 1, it is characterized in that: its chemical ingredients and weight percent thereof are following: Zn 6.0%, and Cu 10.0%, and Ce 1.80%, unavoidable impurities≤0.15%, and surplus is Mg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110021760A CN102051511B (en) | 2011-01-19 | 2011-01-19 | Magnesium-zinc-copper magnesium alloy containing cerium |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110021760A CN102051511B (en) | 2011-01-19 | 2011-01-19 | Magnesium-zinc-copper magnesium alloy containing cerium |
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| CN102051511A CN102051511A (en) | 2011-05-11 |
| CN102051511B true CN102051511B (en) | 2012-09-05 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102433479B (en) * | 2011-12-28 | 2013-09-25 | 东北大学 | Magnesium alloy with warm extrusion property and preparation method of magnesium alloy extrusion material |
| CN102392165B (en) * | 2011-12-28 | 2013-04-10 | 东北大学 | Wrought magnesium alloy with high intensity and method for preparing its extruded material |
| CN105609751A (en) * | 2016-03-15 | 2016-05-25 | 江苏中科亚美新材料有限公司 | Magnesium alloy for battery cathode |
| CN109161768B (en) * | 2018-10-23 | 2020-09-04 | 重庆大学 | Copper-containing high-strength-toughness rapidly-degraded magnesium alloy and preparation method and application thereof |
| CN113061791B (en) * | 2021-03-26 | 2022-05-13 | 华中科技大学 | Magnesium alloy, magnesium alloy casting and manufacturing method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101270430A (en) * | 2008-02-19 | 2008-09-24 | 重庆大学 | Magnesium-zincium-manganese based magnesium alloy containing cerium |
| CN100547100C (en) * | 2005-03-08 | 2009-10-07 | 裵东炫 | Contain the magnesium alloy of mishmetal, the wrought magnesium alloy of producing the method for the wrought magnesium alloy that contains mishmetal and producing thus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3110512B2 (en) * | 1991-09-13 | 2000-11-20 | 健 増本 | High strength and high toughness magnesium alloy material |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100547100C (en) * | 2005-03-08 | 2009-10-07 | 裵东炫 | Contain the magnesium alloy of mishmetal, the wrought magnesium alloy of producing the method for the wrought magnesium alloy that contains mishmetal and producing thus |
| CN101270430A (en) * | 2008-02-19 | 2008-09-24 | 重庆大学 | Magnesium-zincium-manganese based magnesium alloy containing cerium |
Non-Patent Citations (3)
| Title |
|---|
| J.H.JUN，et al..Effects of rare earth elements on microstructure and high temperature mechanical properties of ZC63 alloy.《Journal of Materials Science》.2005,第40卷(第9-10期),第2659-2661页. * |
| JP特开平5-70880A 1993.03.23 |
| S.JAYALAKSHMI et al..Properties of squeeze cast Mg-6Zn-3Cu alloy and its saffil alumina short fibre reinforced composites.《Journal of Materials Science》.2006,第41卷(第12期),第3743-3752页. * |
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