CN102994848B - Magnesium-yttrium alloy - Google Patents
Magnesium-yttrium alloy Download PDFInfo
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- CN102994848B CN102994848B CN201210556082.9A CN201210556082A CN102994848B CN 102994848 B CN102994848 B CN 102994848B CN 201210556082 A CN201210556082 A CN 201210556082A CN 102994848 B CN102994848 B CN 102994848B
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Abstract
The invention discloses magnesium-yttrium alloy. The magnesium-yttrium alloy comprises the following components in percentage by mass: 4.52-5.81% of Y, 2.21%-2.58% of Nd, 0.01%-0.03% of Ni, 0.015-0.023% of Cu, and the balance of Mg and inevitable impurities. The magnesium-yttrium alloy has good high-temperature oxidation resistance and plasticity, percentage elongation of up to 500% at the temperature of 400 DEG C and strain rate sensitive index of up to 0.41.
Description
Technical field
The present invention relates to alloy field, particularly relate to a kind of magnesium-yittrium alloy.
Background technology
Magnesium alloy is to add other elementary composition alloys taking magnesium as base.Be characterized in: density little (1.8g/cm3 magnesium alloy left and right), specific tenacity is high, and Young's modulus is large, good heat dissipation, shock absorbing is good, and the loading capacity that withstands shocks is larger than aluminium alloy, and the corrosive nature of resistance to organism and alkali is good.Main alloy element has aluminium, zinc, manganese, cerium, thorium and a small amount of zirconium or cadmium etc.What use was the widest at present is magnalium, is secondly magnesium-manganese alloy and magnesium zinc zirconium alloy.Be mainly used in the industrial sectors such as Aeronautics and Astronautics, transport, chemical industry, rocket.In practical metal, be the lightest metal, the proportion of magnesium is approximately 2/3 of aluminium, is 1/4 of iron.It is the lightest metal in practical metal, high strength, high rigidity.
Within 1979, DritsE is towards finding that adding heavy rare earth yttrium can produce Beneficial Effect to magnesium alloy, this important discovery make people develop a series of at high temperature have good mechanical property containing Y alloy, thereby be that the application of heavy rare earths (Heary rare earth, HRE) in heat resistance magnesium alloy laid a good foundation.Since the 9O age in 20th century, people, in order to obtain the magnesium alloy that performance is more superior, meet the demand of national defence leading-edge field, start to further investigate Mg-HRE alloy.Compared with light rare earths, heavy rare earth element mainly has following 2 advantages: the same solubility of (1) heavy rare earths in magnesium is large, and reduces sharply and decline with temperature with solubility, thereby has well with molten strengthening and precipitation strength effect; (2) heavy rare earths can be worked in coordination with the mechanical property of light rare earths or other transition element actings in conjunction raising magnesium alloy.
Yttrium is considered to improve magnesium alloy high-temperature behavior one of the most effective element, and its solid solubility in magnesium is 12% (massfraction), and along with the reduction of temperature sharply reduces, can produce excellent solution strengthening and ageing strengthening effect.Existing magnesium-yittrium alloy has good resistance to elevated temperatures, but its plasticity is poor.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of magnesium-yittrium alloy, and high-temperature oxidation resistance is good, and plasticity is good.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of magnesium-yittrium alloy is provided, and the mass percentage content of its component is:
Y 4.52%~5.81% ；
Nd 2.21%~2.58% ；
Ni 0.01%~0.03% ；
Cu 0.015%~0.023% ；
All the other are Mg and inevitable impurity.
In a preferred embodiment of the present invention, the mass percentage content of described component is:
Y 5.21% ；
Nd 2.21%；
Ni 0.01% ；
Cu 0.015% ；
All the other are Mg and inevitable impurity.
In a preferred embodiment of the present invention, 400 DEG C time, described magnesium-yittrium alloy unit elongation is up to 500%, sensitivity of strain rate index reached 0.41.
The invention has the beneficial effects as follows: magnesium-yittrium alloy of the present invention has the following advantages:
1), the atomic size that adds Y element: Y and magnesium differs greatly, and can make magnesium matrix dot matrix produce distortion, carries heavy alloyed homogenization temperature and Young's modulus, slow down diffusion and self-diffusion process, the speed of reduction climb of dislocation, is strengthened matrix.
2), Y addition in Mg is while exceeding 4.52 (massfraction), the MgO generating when alloy high-temp and Y
2o
3.Can effectively stop alloy to continue oxidation, and along with the rising of oxidizing temperature and the increase protective membrane of Y content obviously thicken.
3), add Nd element: the Mg-Y-Nd alloy under high temperature after Equal-channel Angular Pressing carries out superplasticity test, and the ductility in the time of 400 DEG C and 450 DEG C is fine, and unit elongation is higher.
Magnesium-yittrium alloy of the present invention, high-temperature oxidation resistance is good, and plasticity is good, and 400 DEG C time, described magnesium-yittrium alloy unit elongation is up to 500%, sensitivity of strain rate index reached 0.41.
Embodiment
Below preferred embodiment of the present invention is described in detail, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that, protection scope of the present invention is made to more explicit defining.
Embodiment mono-
Choose starting material: the mass percentage content of described component is: Y 5.21%; Nd 2.21%; Ni 0.01%; Cu 0.015%; All the other are Mg;
Processing: above-mentioned raw materials is carried out to melting-cast-extrusion processing, obtain magnesium-yittrium alloy sample one.
Embodiment bis-
Choose starting material: the mass percentage content of described component is: Y 4.52%; Nd 2.25%; Ni 0.02%; Cu 0.02%; All the other are Mg;
Processing: above-mentioned raw materials is carried out to melting-cast-extrusion processing, obtain magnesium-yittrium alloy sample two.
Embodiment tri-
Choose starting material: the mass percentage content of described component is: Y 5.81%; Nd 2.58%; Ni 0.03%; Cu 0.023%; All the other are Mg;
Processing: above-mentioned raw materials is carried out to melting-cast-extrusion processing, obtain magnesium-yittrium alloy sample three.
Embodiment tetra-
Choose starting material: the mass percentage content of described component is: Y 5.38%; Nd 2.41%; Ni 0.015%; Cu 0.025%; All the other are Mg;
Processing: above-mentioned raw materials is carried out to melting-cast-extrusion processing, obtain magnesium-yittrium alloy sample four.
Embodiment five
Choose starting material: the mass percentage content of described component is: Y 5.25%; Nd 2.28%; Ni 0.01%; Cu 0.015%; All the other are Mg;
Processing: above-mentioned raw materials is carried out to melting-cast-extrusion processing, obtain magnesium-yittrium alloy sample five.
The invention has the beneficial effects as follows: magnesium-yittrium alloy of the present invention has the following advantages:
1), the atomic size that adds Y element: Y and magnesium differs greatly, and can make magnesium matrix dot matrix produce distortion, carries heavy alloyed homogenization temperature and Young's modulus, slow down diffusion and self-diffusion process, the speed of reduction climb of dislocation, is strengthened matrix.
2), Y addition in Mg is while exceeding 4.52 (massfraction), the MgO generating when alloy high-temp and Y
2o
3.Can effectively stop alloy to continue oxidation, and along with the rising of oxidizing temperature and the increase protective membrane of Y content obviously thicken.
3), add Nd element: the Mg-Y-Nd alloy under high temperature after Equal-channel Angular Pressing carries out superplasticity test, and the ductility in the time of 400 DEG C and 450 DEG C is fine, and unit elongation is higher.
Magnesium-yittrium alloy of the present invention, high-temperature oxidation resistance is good, and plasticity is good, and 400 DEG C time, described magnesium-yittrium alloy unit elongation is up to 500%, sensitivity of strain rate index reached 0.41.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes description of the present invention to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (1)
1. magnesium-yittrium alloy, is characterized in that, the mass percentage content of its component is:
Y 5.21% ；
Nd 2.21%；
Ni 0.01% ；
Cu 0.015% ；
All the other are Mg and inevitable impurity.
2
.magnesium-yittrium alloy according to claim 1, is characterized in that, 400 DEG C time, described magnesium-yittrium alloy unit elongation is up to 500%, sensitivity of strain rate index reached 0.41.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210556082.9A CN102994848B (en) | 2012-12-20 | 2012-12-20 | Magnesium-yttrium alloy |
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| CN201210556082.9A CN102994848B (en) | 2012-12-20 | 2012-12-20 | Magnesium-yttrium alloy |
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| CN102994848A CN102994848A (en) | 2013-03-27 |
| CN102994848B true CN102994848B (en) | 2014-08-13 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6419765B1 (en) * | 2000-12-13 | 2002-07-16 | General Electric Company | Niobium-silicide based composites resistant to low temperature pesting |
| CN102304677A (en) * | 2011-09-21 | 2012-01-04 | 镇江忆诺唯记忆合金有限公司 | Multielement Mg-based amorphous alloy |
| CN102449177A (en) * | 2009-05-29 | 2012-05-09 | 住友电气工业株式会社 | Linear object, bolt, nut and washer each comprising magnesium alloy |
-
2012
- 2012-12-20 CN CN201210556082.9A patent/CN102994848B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6419765B1 (en) * | 2000-12-13 | 2002-07-16 | General Electric Company | Niobium-silicide based composites resistant to low temperature pesting |
| CN102449177A (en) * | 2009-05-29 | 2012-05-09 | 住友电气工业株式会社 | Linear object, bolt, nut and washer each comprising magnesium alloy |
| CN102304677A (en) * | 2011-09-21 | 2012-01-04 | 镇江忆诺唯记忆合金有限公司 | Multielement Mg-based amorphous alloy |
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| CN102994848A (en) | 2013-03-27 |
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Effective date of registration: 20181009 Address after: 233010 409 Wu Wan Road, Yuhui District, Bengbu, Anhui Patentee after: BENGBU JINSHI NEW MATERIAL Co.,Ltd. Address before: 230031 B-1014, 10 floor, business office building, Wo Ye garden, Shushan District, Hefei, Anhui. Patentee before: HEFEI WISDOM LOTUT INTELLECTUAL PROPERTY Co.,Ltd. Effective date of registration: 20181009 Address after: 230031 B-1014, 10 floor, business office building, Wo Ye garden, Shushan District, Hefei, Anhui. Patentee after: HEFEI WISDOM LOTUT INTELLECTUAL PROPERTY Co.,Ltd. Address before: 215514 Jingli village, Meili Town, Suzhou, Jiangsu, Changshou City Patentee before: CHANGSHU DONGFANG SPECIAL METAL MATERIAL FACTORY |
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Effective date of registration: 20181130 Address after: 225721 Dainan Town, Xinghua City, Taizhou City, Jiangsu Province Patentee after: Huaxin Aviation Equipment Co.,Ltd. Address before: 233010 409 Wu Wan Road, Yuhui District, Bengbu, Anhui Patentee before: BENGBU JINSHI NEW MATERIAL Co.,Ltd. |
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