CN1584090A - High-strength deforming magnesium alloy - Google Patents
High-strength deforming magnesium alloy Download PDFInfo
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- CN1584090A CN1584090A CN 200410044837 CN200410044837A CN1584090A CN 1584090 A CN1584090 A CN 1584090A CN 200410044837 CN200410044837 CN 200410044837 CN 200410044837 A CN200410044837 A CN 200410044837A CN 1584090 A CN1584090 A CN 1584090A
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Abstract
A high-strength deformed magnesium alloy consists of Al 1.5-3.5wt%, Zn 0.2-4wt%, Mn 0.1-0.6wt%, Ca 0.01-2.0wt%, Si 0.05-2.0wt%, magnesium residue. Al and Zn are main enhancing element of alloy which can improve alloy plasticity. Ca and Si composite add can form fined Mg2Si particle. It achieves effective dispersing enhancing function and corrosion resistant performance.
Description
One technical field the present invention relates to a kind of light metal material, relates in particular to a kind of high-strength wrought magnesium alloys.
The density of two background technology magnesium alloy (proportion) is little, and specific rigidity and specific tenacity height are structural metallic materialss the lightest in the Industrial materials.Owing to adopted magnesium alloy structural part on automobile and the electronic industry, make Application of Magnesium obtain promoting in recent years.Yet compare with aluminium alloy, the Application of Magnesium scope is also very limited, and to be the magnesium alloy that uses at present compared a certain distance with aluminium alloy to one of its reason on intensity and plasticity, thereby also can't satisfy the requirement of many Industrial products and equipment.Because magnesium belongs to hexagonal structure, can not as some other metallic substance, adopt the approach of solution strengthening effectively to improve its intensity, so this invention adopted the prescription of a kind of silicon and the compound low alloying of calcium, formed a kind of novel high-strength wrought magnesium alloys.
Three summary of the invention:
Technical problem the present invention proposes a kind of intensity height, plasticity is good, cost is low, be suitable for the high-strength wrought magnesium alloys of large-scale mass production.
A kind of high-strength wrought magnesium alloys of technical scheme comprises aluminium, zinc, manganese, calcium, silicon and magnesium, and its proportioning (weight percent) is: aluminium: 1.5%～3.5%, and zinc: 0.2%～4%, manganese: 0.1%～0.6%,
Calcium: 0.01%～2.0%, silicon 0.05%～2.0%, all the other are magnesium.
Technique effect
1) aluminium is main strengthening element in the alloy, it by solution strengthening with form β (Mg mutually with magnesium
17Al
12) precipitation strength, improve alloy at room temperature intensity.In addition, the adding of aluminium has also improved the casting technique performance of alloy.
2) zinc also is the strengthening element in the alloy.Though its strengthening effect is not as aluminium, its adding can improve the plasticity of alloy.
3) the compound adding of calcium and silicon can be that formation is the tiny Mg of core with calcium in the alloy
2The Si particle, thus alloy is produced effective dispersion-strengthened action.
4) effect of manganese mainly is the corrosion resistance nature that improves alloy.Manganese can also form compound with the impurity element (as iron) in the alloy in the alloy melting process, be deposited to the crucible bottom, thereby eliminates the deleterious effect of iron contamination to the alloy corrosion resistance nature.The present invention has formed high-strength magnesium alloy after above-mentioned element is made up by a certain percentage.As follows, room temperature (20 ℃) table 1, table 2, table 3, table 4 are mechanical properties of the embodiment of the invention 2 (No. 1 alloy) and embodiment 3 (No. 2 alloys).
Table 1 is the room-temperature mechanical property of the extruding attitude (bar) of two concrete schemes of the present invention.
| Alloy number | Tensile strength MPa | Yield strength MPa | Unit elongation % |
| ????1 | ????290 | ????195 | ????7.5 |
| ????2 | ????342 | ????216 | ????5.9 |
Table 2 is room-temperature mechanical properties of extruded bars annealing (200 ℃) attitude of two concrete schemes of the present invention.
| Alloy number | Tensile strength MPa | Yield strength MPa | Unit elongation % |
| ????1 | ????275 | ????168 | ????16.2 |
| ????2 | ????296 | ????192 | ????11.8 |
Table 3 is room-temperature mechanical properties that the sheet material of two concrete schemes of the present invention rolls attitude.
| Alloy number | Tensile strength MPa | Yield strength MPa | Unit elongation % |
| ????1 | ????337 | ????298 | ????6.7 |
| ????2 | ????358 | ????301 | ????5.0 |
Table 4 is room-temperature mechanical properties of the sheet material annealed state (200 ℃) of two concrete schemes of the present invention.
| Alloy number | Tensile strength MPa | Yield strength MPa | Unit elongation % |
| ????1 | ????304 | ????198 | ????15.2 |
| ????2 | ????326 | ????209 | ????11.5 |
5) table 1-table 4 has shown that the alloy of the embodiment of the invention 2 and 3 has very high intensity and good plasticity, and this ratio that is the element in the component prescription adds is arranged in pairs or groups rationally, especially the add-on of aluminum and zinc.The zinc amount is unsuitable too high when the aluminium amount is higher, and the zinc amount when high the aluminium amount unsuitable too high.Both sums preferably are controlled at 4-6%, and this moment, alloy had good processing properties, and deformation adds and is difficult for man-hour forming crackle, and the alloy after becoming a useful person can have the rational Match of intensity and plasticity.If further improve the add-on of aluminium or zinc again, can cause the decline of processing characteristics, the plasticity of alloy is reduced.
6) if alloy of the present invention is got narrower composition range, effect can be better.This composition range is: aluminium: 3.0-3.5%, and zinc: 2.0-3.0%, manganese: 0.1-0.6%, calcium: 0.1-0.3%, silicon: 0.1-0.3%, all the other are magnesium.Wherein to be taken at scope higher in the claim 1 be in order to obtain high strength to aluminium content: zinc content not weighting profit requires 1 the upper limit can avoid alloy plasticity too low; Silicon and calcium are controlled at the effect that 0.1-0.3% can reach crystal grain thinning basically respectively.Though the further refinement to a certain extent of the crystal grain in the add-on alloy cast ingot of continuation increase silicon and calcium, effect is not very remarkable.
Four description of drawings
Fig. 1 is the metallographic structure of the embodiment of the invention 2 sheet alloy annealed state.
Five specific embodiments
Preferred version of the present invention is: a kind of high-strength wrought magnesium alloys, comprise aluminium, zinc, manganese, calcium, silicon and magnesium, its proportioning (weight percent) is: aluminium: 3.0%～3.5%, for example can be 3.0%, 3.4%, 3.5%, zinc: 2.0%～3.0%, for example can be 2.5%, 2.8%, manganese: 0.15%～0.60%, for example can be 0.15%, 0.30,0.60%, calcium: 0.1%～0.3%, for example can be 0.2%, silicon 0.1%～0.3% for example can be 0.1%, 0.2%, all the other are magnesium.
1 one kinds of high-strength wrought magnesium alloys of embodiment comprise aluminium, zinc, manganese, calcium, silicon and magnesium, and its proportioning (weight percent) is: aluminium: 1.5%-3.9%, zinc: 0.2%-4%, manganese: 0.1%-0.6%, calcium: 0.01%-2.0%, silicon 0.05%-2.0%, all the other are magnesium.
2 one kinds of high-strength wrought magnesium alloys of embodiment comprise aluminium, zinc, manganese, calcium, silicon and magnesium, and its proportioning (weight percent) is: aluminium: 1.5%, and zinc: 4.0%, manganese: 0.12%, calcium: 0.05%, silicon 0.10%, all the other are magnesium.
3 one kinds of high-strength wrought magnesium alloys of embodiment comprise aluminium, zinc, manganese, calcium, silicon and magnesium, and its proportioning (weight percent) is: aluminium: 3.2%, and zinc: 2.0%, manganese: 0.30%, calcium: 0.15%, silicon 0.30%, all the other are magnesium.
4 one kinds of high-strength wrought magnesium alloys of embodiment comprise aluminium, zinc, manganese, calcium, silicon and magnesium, and its proportioning (weight percent) is: aluminium: 3.0%, and zinc: 0.8%, manganese: 0.45%, calcium: 0.45%, silicon 0.90%, all the other are magnesium.
5 one kinds of high-strength wrought magnesium alloys of embodiment comprise aluminium, zinc, manganese, calcium, silicon and magnesium, and its proportioning (weight percent) is: aluminium: 3.5%, and zinc: 0.5%, manganese: 0.60%, calcium: 1.0%, silicon 1.5%, all the other are magnesium.
The present invention can prepare above-mentioned wrought magnesium alloys with following technology:
1) before molten alloy, to prepare magnesium calcium master alloy earlier.Pure magnesium ingot is placed crucible, and the heating that heats up is melted fully until magnesium ingot.Add pure calcium then, and feed shielding gas (can be carbonic acid gas or sulfur hexafluoride).After treating that calcium melts fully, liquation is poured in the metal mold, get final product master alloy.
2) earlier pure magnesium, zinc, aluminium manganese master alloy (can buy from market), aluminium silicon master alloy (can buy from market) are put into crucible during molten alloy, and feed shielding gas.After the furnace charge that adds melts fully, add with the homemade magnesium calcium of aforesaid method master alloy, and continue logical shielding gas.After the master alloy fusing, can casting technique routinely obtain high-strength magnesium alloy foundry goods of the present invention or ingot casting.
3) sheet material of the present invention or tubing can prepare with the processing method of extruding.Earlier ingot casting is heated to 350 ℃-400 ℃ before the extruding, and insulation, soaking time length is decided on the ingot casting diameter, generally is controlled at 20-60 minute.Extrusion mould needs preheating, and preheating temperature is 250 ℃-300 ℃.Sheet material of the present invention can directly form with the ingot casting hot rolling, and rolling preceding ingot casting also needs preheating, and the temperature of preheating is identical with the preheating temperature of above-mentioned extruding.Every time deformation quantity is controlled at below 20% when rolling.When multi-pass was rolling, if the temperature of slab is lower than 300 ℃, slab need melt down annealing.Annealing temperature is identical with preheating temperature.
Claims (2)
1, a kind of high-strength wrought magnesium alloys is characterized in that comprising aluminium, zinc, manganese, calcium, silicon and magnesium, and its proportioning (weight percent) is: aluminium: 1.5%～3.9%, zinc: 0.2%～4%, manganese: 0.1%～0.6%, calcium: 0.01%～2.0%, silicon 0.05%～2.0%, all the other are magnesium.
2, high-strength wrought magnesium alloys according to claim 1, it is characterized in that comprising aluminium, zinc, manganese, calcium, silicon and magnesium, its proportioning (weight percent) is: aluminium: 3.0%～3.5%, zinc: 2.0%～3.0%, manganese: 0.1%～0.6%, calcium: 0.1%～0.3%, silicon: 0.1%～0.3%, all the other are magnesium.
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| CN 200410044837 CN1584090A (en) | 2004-05-31 | 2004-05-31 | High-strength deforming magnesium alloy |
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|---|---|---|---|
| CN 200410044837 CN1584090A (en) | 2004-05-31 | 2004-05-31 | High-strength deforming magnesium alloy |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101818293A (en) * | 2010-04-21 | 2010-09-01 | 广州有色金属研究院 | Heat resistant magnesium alloy |
| CN102383013A (en) * | 2010-08-27 | 2012-03-21 | 比亚迪股份有限公司 | Wrought magnesium alloy and preparation method thereof as well as wrought magnesium alloy product and preparation method thereof |
| CN104451304A (en) * | 2014-12-13 | 2015-03-25 | 重庆大学 | High-conductivity and high-shielding-effectiveness magnesium alloy and preparation method thereof |
| CN104630516A (en) * | 2015-01-28 | 2015-05-20 | 重庆大学 | Method for increasing purity of magnesium alloy by adding manganese |
| CN105714168A (en) * | 2016-03-25 | 2016-06-29 | 中国兵器科学研究院宁波分院 | High-yield-strength magnesium alloy and preparation method thereof |
| CN109022973A (en) * | 2018-06-26 | 2018-12-18 | 无锡福镁轻合金科技有限公司 | A kind of deformed magnesium alloy material and its preparation process of middle high-strength and high-plasticity |
| CN110644000A (en) * | 2019-10-25 | 2020-01-03 | 长江师范学院 | Crucible treatment method, smelting container and application thereof |
| CN115652157A (en) * | 2022-10-19 | 2023-01-31 | 重庆理工大学 | AZ series high-performance cast magnesium alloy with low aluminum content and preparation method thereof |
-
2004
- 2004-05-31 CN CN 200410044837 patent/CN1584090A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101818293A (en) * | 2010-04-21 | 2010-09-01 | 广州有色金属研究院 | Heat resistant magnesium alloy |
| CN101818293B (en) * | 2010-04-21 | 2012-05-30 | 广州有色金属研究院 | Heat resistant magnesium alloy |
| CN102383013A (en) * | 2010-08-27 | 2012-03-21 | 比亚迪股份有限公司 | Wrought magnesium alloy and preparation method thereof as well as wrought magnesium alloy product and preparation method thereof |
| CN104451304A (en) * | 2014-12-13 | 2015-03-25 | 重庆大学 | High-conductivity and high-shielding-effectiveness magnesium alloy and preparation method thereof |
| CN104451304B (en) * | 2014-12-13 | 2017-02-22 | 重庆大学 | High-conductivity and high-shielding-effectiveness magnesium alloy and preparation method thereof |
| CN104630516A (en) * | 2015-01-28 | 2015-05-20 | 重庆大学 | Method for increasing purity of magnesium alloy by adding manganese |
| CN104630516B (en) * | 2015-01-28 | 2016-09-07 | 重庆大学 | A kind of manganese addition improves the method for magnesium alloy purity |
| CN105714168A (en) * | 2016-03-25 | 2016-06-29 | 中国兵器科学研究院宁波分院 | High-yield-strength magnesium alloy and preparation method thereof |
| CN109022973A (en) * | 2018-06-26 | 2018-12-18 | 无锡福镁轻合金科技有限公司 | A kind of deformed magnesium alloy material and its preparation process of middle high-strength and high-plasticity |
| CN110644000A (en) * | 2019-10-25 | 2020-01-03 | 长江师范学院 | Crucible treatment method, smelting container and application thereof |
| CN115652157A (en) * | 2022-10-19 | 2023-01-31 | 重庆理工大学 | AZ series high-performance cast magnesium alloy with low aluminum content and preparation method thereof |
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