CN104233033A - High-strength high-toughness magnesium-base alloy and preparation method thereof - Google Patents
High-strength high-toughness magnesium-base alloy and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a high-strength high-toughness magnesium-base alloy which is characterized by containing the following components in percentage by weight: 4.5-5.5% of Zn, 0.7-0.8% of Sn, 0.28-0.30% of Gd, 1-1.5% of Ti, 0.5-1% of Al, 0.7-0.8% of Ca, 0.9-1.1% of Sr, 0.3-0.4% of La, 0.4-0.45% of Sm, 0.45-0.55% of Nd, 0.4-0.45% of Y, 0.4-0.5% of Zr, 1-1.1% of Mn, 0.3-0.4% of Cu, 0.3-0.35% of Ce, 1-1.2% of Nb, 4-6% of boron nitride nanotube particle, 5-6% of graphene, 3-4% of tungsten carbide crystal whisker and the balance of Mg. The strength, toughness, heat resistance and tensile property of the alloy are greatly enhanced as compared with the prior art.
Description
Technical field
The present invention relates to field of alloy material, especially a kind of high-strength and high ductility Magnuminium and preparation method thereof.
Background technology
Due to the special performance of magnesium alloy materials, particularly its high-recovery, both effectively make use of resource, and additionally reduced environmental pollution, each major company sets about the research of magnesium alloy one after another in the world.Although Magnuminium has low density, good heat dissipation, specific rigidity are high, larger than amount of elasticity, the feature such as easy to be recycled, is widely used in machinery, electronics space flight and aviation lamp field, but magnesium alloy stretching pour point and yield strength low, creep-resistant property is poor, is still the factor limiting its application.
Chinese patent CN102719716A relates to a kind of heat-proof magnesium-base alloy, and add-on La and Ce in this alloy, improves the resistance toheat of Magnuminium, but this alloy is still difficult meets higher occasion to the requirement of Magnuminium.
Chinese patent CN 103849798A relates to a kind of high-strength magnesium base Alloy And Preparation Method, adds the element such as calcium, caesium, and improve melting method in this alloy, improves the various performances of alloy, and the application scenario of this alloy is still subject to larger limitation.
Chinese patent CN102230118A relates to that a kind of add tin in this alloy, improve intensity and the plasticity of Magnuminium, properties for follow is good containing the thin brilliant magnesium Zinc-tin alloy of Sn, but the intensity of this alloy and tensile property poor.
Therefore be badly in need of the properties improving Magnuminium, thus widen its Application Areas, especially higher field is required to Magnuminium.
Summary of the invention
The technical problem to be solved in the present invention improves the properties of Magnuminium, comprises intensity, resistance toheat, toughness and tensile property, can adapt to more Application Areas.
In order to solve this technical problem, the present invention by the following technical solutions:
A kind of high-strength and high ductility Magnuminium, it is characterized in that, by weight percentage containing, for example lower component: Zn 4.5-5.5%, Sn0.7-0.8%, Gd 0.28-0.30%, Ti 1-1.5%, Al 0.5-1%, Ca 0.7-0.8%, Sr 0.9-1.1%, La 0.3-0.4%, Sm 0.4-0.45%, Nd 0.45-0.55%, Y 0.4-0.45%, Zr 0.4-0.5%, Mn 1-1.1%, Cu 0.3-0.4%, Ce 0.3-0.35%, Nb 1-1.2%, boron nitride nanometer tube particle 4-6% Graphene 5-6%, wolfram varbide whisker 3-4%, remaining ingredient is Mg.
In order to obtain better properties, the present invention is at the enterprising one-step optimization in the basis of above-mentioned alloy, and high-strength and high ductility Magnuminium preferably consists of:
By weight percentage containing, for example lower component: Zn 5%, Sn 0.76%, Gd 0.29%, Ti 1.4%, Al 0.8%, Ca 0.75%, Sr 1.0%, La 0.35%, Sm 0.42%, Nd 0.5%, Y 0.43%, Zr 0.45%, Mn 1.06%, Cu 0.35%, Ce 0.33%, Nb 1.15%, boron nitride nanometer tube particle 5% Graphene 5.5%, wolfram varbide whisker 3.5%, remaining ingredient is Mg.
High-strength and high ductility Magnuminium of the present invention is prepared by following steps:
(1) prepare burden according to the weight percent limited: prepare the pure Mg ingot of corresponding content, pure Zn ingot, and other alloying elements, boron nitride nanometer tube particle, Graphene particle, wolfram varbide whisker;
(2) under the protection of rare gas element (as nitrogen, argon gas or helium), pure Mg ingot, Zn ingot are melted, other alloying element is added by product composition, after fully melting, add wolfram varbide whisker, boron nitride nanometer tube particle and Graphene again, further melting, stir while melting, sufficient standing after melting completes;
(3) continue more than raised temperature to 750 DEG C, carry out refining;
(4) aluminium alloy is injected the mould through preheating, naturally cooling obtains high-strength and high ductility Magnuminium.
Preparation method of the present invention can also comprise thermal treatment common in prior art.
The present invention has the following advantages:
Add boron nitride nanometer tube particle, Graphene and wolfram varbide whisker, above-mentioned three kinds of material actings in conjunction improve the various mechanical properties of Magnuminium.
Six kinds of rare earth Gds, La, Sm, Nd, Y, Ce adding according to specified proportion, change the heterogeneous microstructure of alloy, improve the resistance toheat of Magnuminium, and improve its castability.
Adding of the elements such as Mn, Cu, Nb, optimize the composition of alloy, improve its mechanical property.
Optimize the ratio of various composition, further increase the various performances of Magnuminium.Preferably, described continuation raised temperature to 800,900,1000,1100,1200 DEG C.
Embodiment
Embodiment 1:
The high-strength and high ductility Magnuminium that prepared composition is as follows.By weight percentage containing, for example lower component: Zn 4.5%, Sn 0.7%, Gd 0.28%, Ti 1%, Al 0.5%, Ca 0.7%, Sr 0.9%, La 0.3%, Sm 0.4%, Nd 0.45%, Y 0.4%, Zr 0.4%, Mn 1%, Cu 0.3%, Ce 0.3%, Nb 1%, boron nitride nanometer tube particle 4% Graphene 5%, wolfram varbide whisker 3%, remaining ingredient is Mg.This alloy is prepared by following steps:
(1) prepare burden according to above-mentioned weight percent: prepare the pure Mg ingot of corresponding content, pure Zn ingot, and other alloying elements, boron nitride nanometer tube particle, Graphene particle, wolfram varbide whisker;
(2) pure Mg ingot, Zn ingot are placed in crucible, under the protection of nitrogen after fusing, other alloying element is added by product proportion of composing, after fully melting, add wolfram varbide whisker, boron nitride nanometer tube particle and Graphene again, further melting, stirs while melting, sufficient standing after melting completes;
(3) continue more than raised temperature to 730 DEG C, carry out refining;
(4) aluminium alloy is injected the mould through preheating, naturally cooling obtains high-strength and high ductility Magnuminium.
Test the performance of this alloy, under room temperature, tensile strength is 518MPa, and yield strength is 410Mpa, and fracture toughness property is 11.5MPam
1/2.
Embodiment 2:
Prepare the high-strength and high ductility Magnuminium of another composition.By weight percentage containing, for example lower component: Zn 5.5%, Sn 0.8%, Gd 0.30%, Ti 1.5%, Al 1%, Ca 0.8%, Sr 1.1%, La 0.4%, Sm 0.45%, Nd 0.55%, Y0.45%, Zr 0.5%, Mn 1.1%, Cu 0.4%, Ce 0.35%, Nb 1.2%, boron nitride nanometer tube particle 6% Graphene 6%, wolfram varbide whisker 4%, remaining ingredient is Mg.
The preparation method of above-mentioned Magnuminium is as follows:
(1) prepare burden according to above-mentioned weight percent: prepare the pure Mg ingot of corresponding content, pure Zn ingot, and other alloying elements, boron nitride nanometer tube particle, Graphene particle, wolfram varbide whisker;
(2) pure Mg ingot, Zn ingot are placed in crucible, under the protection of nitrogen after fusing, other alloying element is added by product proportion of composing, after fully melting, add wolfram varbide whisker, boron nitride nanometer tube particle and Graphene again, further melting, stirs while melting, sufficient standing after melting completes;
(3) continue more than raised temperature to 750 DEG C, carry out refining;
(4) aluminium alloy is injected the mould through preheating, naturally cooling obtains high-strength and high ductility Magnuminium.
Test the performance of this alloy, under room temperature, tensile strength is 529MPa, and yield strength is 428Mpa, and fracture toughness property is 12.5MPam
1/2.
Embodiment 3:
The ratio of each component of enhancing Magnuminium of the present invention is debugged, selects the alloy compositions of over-all properties the best.Particularly, the enhancing Magnuminium of the preferred best results of the present invention, by weight percentage containing, for example lower component: Zn 5%, Sn0.76%, Gd 0.29%, Ti 1.4%, Al 0.8%, Ca 0.75%, Sr 1.0%, La 0.35%, Sm 0.42%, Nd 0.5%, Y 0.43%, Zr 0.45%, Mn 1.06%, Cu 0.35%, Ce 0.33%, Nb 1.15%, boron nitride nanometer tube particle 5% Graphene 5.5%, wolfram varbide whisker 3.5%, remaining ingredient is Mg.
The preparation method of this Magnuminium is as follows:
(1) prepare burden according to above-mentioned weight percent: prepare the pure Mg ingot of corresponding content, pure Zn ingot, and other alloying elements, boron nitride nanometer tube particle, Graphene particle, wolfram varbide whisker;
(2) pure Mg ingot, Zn ingot are placed in crucible, under the protection of nitrogen after fusing, other alloying element is added by product proportion of composing, after fully melting, add wolfram varbide whisker, boron nitride nanometer tube particle and Graphene again, further melting, stirs while melting, sufficient standing after melting completes;
(3) continue more than raised temperature to 740 DEG C, carry out refining;
(4) aluminium alloy is injected the mould through preheating, naturally cooling obtains high-strength and high ductility Magnuminium.
Test the performance of this alloy, under room temperature, tensile strength is 557MPa, and yield strength is 449Mpa, and fracture toughness property is 13.7MPam
1/2.
The effect comparison of embodiment 1-3 is as shown in the table:
Table 1: the mechanical property of embodiment 1-3 alloy
| Embodiment | Tensile strength (MPa) | Yield strength (MPa) | Fracture toughness property (MPam 1/2) |
| 1 | 518 | 410 | 11.5 |
| 2 | 529 | 428 | 12.5 |
| 3 | 557 | 449 | 13.7 |
As can be seen from Table 1, the tensile strength of the alloy obtained by the application, yield strength and fracture toughness property are all better than prior art.
Claims (9)
1. a high-strength and high ductility Magnuminium, it is characterized in that, by weight percentage containing, for example lower component: Zn 4.5-5.5%, Sn 0.7-0.8%, Gd 0.28-0.30%, Ti 1-1.5%, Al 0.5-1%, Ca 0.7-0.8%, Sr 0.9-1.1%, La 0.3-0.4%, Sm 0.4-0.45%, Nd 0.45-0.55%, Y 0.4-0.45%, Zr 0.4-0.5%, Mn 1-1.1%, Cu 0.3-0.4%, Ce 0.3-0.35%, Nb 1-1.2%, boron nitride nanometer tube particle 4-6% Graphene 5-6%, wolfram varbide whisker 3-4%, remaining ingredient is Mg.
2. Magnuminium as claimed in claim 1, is characterized in that, by weight percentage containing, for example lower component: Zn 5%, Sn 0.76%, Gd 0.29%, Ti 1.4%, Al 0.8%, Ca 0.75%, Sr 1.0%, La 0.35%, Sm 0.42%, Nd 0.5%, Y 0.43%, Zr 0.45%, Mn 1.06%, Cu 0.35%, Ce 0.33%, Nb 1.15%, boron nitride nanometer tube particle 5% Graphene 5.5%, wolfram varbide whisker 3.5%, remaining ingredient is Mg.
3. prepare the method for high-strength and high ductility Magnuminium according to claim 1, comprise the steps:
(1) prepare burden according to weight percent according to claim 1: prepare the pure Mg ingot of corresponding content, pure Zn ingot, and other alloying elements, boron nitride nanometer tube particle, Graphene particle, wolfram varbide whisker;
(2) pure Mg ingot, Zn ingot are placed in crucible; under the protection of rare gas element after fusing; other alloying element is added by product proportion of composing; after fully melting; add wolfram varbide whisker, boron nitride nanometer tube particle and Graphene again; further melting, stirs while melting, sufficient standing after melting completes.
(3) continue more than raised temperature to 750 DEG C, carry out refining;
(4) aluminium alloy is injected the mould through preheating, naturally cooling obtains high-strength and high ductility Magnuminium.
4. method as claimed in claim 3, is characterized in that: the rare gas element described in step (2) is selected from nitrogen, argon gas or helium.
5. method as claimed in claim 3, is characterized in that: described continuation raised temperature to 800 DEG C.
6. method as claimed in claim 3, is characterized in that: described continuation raised temperature to 900 DEG C.
7. method as claimed in claim 3, is characterized in that: described continuation raised temperature to 1000 DEG C.
8. method as claimed in claim 3, is characterized in that: described continuation raised temperature to 1100 DEG C.
9. method as claimed in claim 3, is characterized in that: described continuation raised temperature to 1200 DEG C.
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Cited By (12)
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| CN105256208A (en) * | 2015-10-09 | 2016-01-20 | 天长市兴宇铸造有限公司 | Boron nitride nanotube modifying Mg-Al-Mn magnesium alloy material for casting automobile parts and preparation method thereof |
| CN105256211A (en) * | 2015-10-09 | 2016-01-20 | 天长市兴宇铸造有限公司 | Graphene modifying Mg-Al-Mn magnesium alloy material for casting automobile parts and preparation method thereof |
| CN105624457A (en) * | 2016-03-22 | 2016-06-01 | 北京工业大学 | Graphene enhanced magnesium-based composite and preparing method thereof |
| CN105695838A (en) * | 2016-02-17 | 2016-06-22 | 张霞 | Anti-corrosion scalpel handle and preparation method thereof |
| CN106480383A (en) * | 2016-10-31 | 2017-03-08 | 无锡市永兴金属软管有限公司 | A kind of preparation method of the effective magnesium alloy materials of wavy metal |
| CN106987747A (en) * | 2017-03-23 | 2017-07-28 | 济南大学 | A kind of even corrosion resistant Biological magnesium alloy and preparation method thereof |
| CN107083508A (en) * | 2017-04-17 | 2017-08-22 | 扬州峰明光电新材料有限公司 | A kind of polynary enhanced heat-proof corrosion-resistant magnesium alloy and its manufacture method |
| CN107604227A (en) * | 2017-09-19 | 2018-01-19 | 安徽恒利增材制造科技有限公司 | A kind of magnesium alloy ingot and preparation method thereof |
| CN107747014A (en) * | 2017-10-26 | 2018-03-02 | 东北大学 | One kind has high ductibility high-strength magnesium alloy and preparation method thereof |
| CN110684915A (en) * | 2019-10-29 | 2020-01-14 | 东莞市腾美金属科技有限公司 | High-strength magnesium alloy |
| CN111471886A (en) * | 2020-03-27 | 2020-07-31 | 哈尔滨工业大学 | Preparation method and application of hot-cracking-resistant cast magnesium alloy |
| US10947607B1 (en) | 2020-06-30 | 2021-03-16 | The Florida International University Board Of Trustees | Boron nitride nanotube-magnesium alloy composites and manufacturing methods thereof |
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| CN105256211A (en) * | 2015-10-09 | 2016-01-20 | 天长市兴宇铸造有限公司 | Graphene modifying Mg-Al-Mn magnesium alloy material for casting automobile parts and preparation method thereof |
| CN105256208A (en) * | 2015-10-09 | 2016-01-20 | 天长市兴宇铸造有限公司 | Boron nitride nanotube modifying Mg-Al-Mn magnesium alloy material for casting automobile parts and preparation method thereof |
| CN105695838A (en) * | 2016-02-17 | 2016-06-22 | 张霞 | Anti-corrosion scalpel handle and preparation method thereof |
| CN105624457A (en) * | 2016-03-22 | 2016-06-01 | 北京工业大学 | Graphene enhanced magnesium-based composite and preparing method thereof |
| CN105624457B (en) * | 2016-03-22 | 2017-08-04 | 北京工业大学 | Graphene enhancing magnesium-based composite material and preparation method thereof |
| CN106480383A (en) * | 2016-10-31 | 2017-03-08 | 无锡市永兴金属软管有限公司 | A kind of preparation method of the effective magnesium alloy materials of wavy metal |
| CN106987747B (en) * | 2017-03-23 | 2019-01-22 | 济南大学 | A kind of even corrosion resistant Biological magnesium alloy and preparation method thereof |
| CN106987747A (en) * | 2017-03-23 | 2017-07-28 | 济南大学 | A kind of even corrosion resistant Biological magnesium alloy and preparation method thereof |
| CN107083508A (en) * | 2017-04-17 | 2017-08-22 | 扬州峰明光电新材料有限公司 | A kind of polynary enhanced heat-proof corrosion-resistant magnesium alloy and its manufacture method |
| CN107083508B (en) * | 2017-04-17 | 2019-03-05 | 扬州峰明光电新材料有限公司 | A kind of the heat-proof corrosion-resistant magnesium alloy and its manufacturing method of polynary enhancing |
| CN107604227A (en) * | 2017-09-19 | 2018-01-19 | 安徽恒利增材制造科技有限公司 | A kind of magnesium alloy ingot and preparation method thereof |
| CN107747014A (en) * | 2017-10-26 | 2018-03-02 | 东北大学 | One kind has high ductibility high-strength magnesium alloy and preparation method thereof |
| CN107747014B (en) * | 2017-10-26 | 2019-09-24 | 东北大学 | One kind having high ductibility high-strength magnesium alloy and preparation method thereof |
| CN110684915A (en) * | 2019-10-29 | 2020-01-14 | 东莞市腾美金属科技有限公司 | High-strength magnesium alloy |
| CN111471886A (en) * | 2020-03-27 | 2020-07-31 | 哈尔滨工业大学 | Preparation method and application of hot-cracking-resistant cast magnesium alloy |
| US10947607B1 (en) | 2020-06-30 | 2021-03-16 | The Florida International University Board Of Trustees | Boron nitride nanotube-magnesium alloy composites and manufacturing methods thereof |
| US11131007B1 (en) | 2020-06-30 | 2021-09-28 | The Florida International University Board Of Trustees | Boron nitride nanotube-magnesium alloy composites and manufacturing methods thereof |
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