CN103014466A - Magnesium-holmium-yttrium alloy - Google Patents
Magnesium-holmium-yttrium alloy Download PDFInfo
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- CN103014466A CN103014466A CN2012105561179A CN201210556117A CN103014466A CN 103014466 A CN103014466 A CN 103014466A CN 2012105561179 A CN2012105561179 A CN 2012105561179A CN 201210556117 A CN201210556117 A CN 201210556117A CN 103014466 A CN103014466 A CN 103014466A
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Abstract
The invention discloses a magnesium-holmium-yttrium alloy. The magnesium-holmium-yttrium alloy comprises the following components by mass percent: 1.56-2.80% of Ho, 0.50-1.58% of Y, 0.61-2.00% of Nd, 0.01-0.55% of Zn, 3.25-7.75% of Al, 0.01-0.02% of Ni, 0.015-0.025% of Cu and the balance of Mg and inevitable impurities. The magnesium-holmium-yttrium alloy has excellent mechanical properties and relatively good toughness and is easy to manufacture.
Description
Technical field
The present invention relates to the alloy field, particularly relate to a kind of magnesium-holmium-yittrium alloy.
Background technology
Magnesium alloy is to add other elementary composition alloys take magnesium as base.Be characterized in: density little (about the 1.8g/cm3 magnesium alloy), 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 anti-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, secondly is magnesium-manganese alloy and magnesium zinc zirconium alloy.Be mainly used in the industrial sectors such as Aeronautics and Astronautics, transportation, chemical industry, rocket.Be the lightest metal in practical metal, the proportion of magnesium approximately is 2/3 of aluminium, is 1/4 of iron.It is the lightest metal in the practical metal, high strength, high rigidity.
DritsE was towards finding that adding heavy rare earth yttrium can produce Beneficial Effect to magnesium alloy in 1979, this important discovery make people develop a series of at high temperature have a good mechanical property contain the 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 satisfy the demand of national defence leading-edge field in order to obtain the more superior magnesium alloy of performance, begin to further investigate Mg-HRE alloy.Compare 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 decline with solubility with temperature, thereby has well with molten reinforcement 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.
Thereby the alloy of magnesium and heavy rare earth element becomes the now emphasis of research.
Summary of the invention
The technical problem that the present invention mainly solves provides a kind of magnesium-holmium-yittrium alloy, and mechanical property is splendid, and preferably toughness is arranged, and easily makes processing.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of magnesium-holmium-yittrium alloy is provided, and the mass percentage content of its component is:
Ho 1.56%~2.80% ；
Y 0.50%~1.58%；
Nd 0.61%~2.00% ；
Zn 0.01%~0.55%；
Al 3.25%~7.75%；
Ni 0.01%~0.02% ；
Cu 0.015%~0.025% ；
All the other are Mg and inevitable impurity.
In a preferred embodiment of the invention, the mass percentage content of described component is:
Ho 2.58% ；
Y 1.26% ；
Nd 1.28% ；
Zn 0.25%；
Al 6.65%；
Ni 0.01% ；
Cu 0.02% ；
All the other are Mg and inevitable impurity.
In a preferred embodiment of the invention, described magnesium-holmium-yittrium alloy also comprises the La of 0.01 ~ 0.05% mass percent and the Ce of 0.01 ~ 0.02% mass percent.
In a preferred embodiment of the invention, described magnesium-holmium-yittrium alloy also comprises the La of 0.03% mass percent and the Ce of 0.015% mass percent.
The invention has the beneficial effects as follows: magnesium-holmium of the present invention-yittrium alloy has the following advantages:
1), add the Ho element: the atomic radius of holmium is less than Gd, and the 4f orbital electron is many, and chemically reactive is high, and pure metal is called solution strengthening through the phenomenon that intensity, hardness after the suitable alloying improve.The effect of solution strengthening is decided by that the diameter of character, concentration and solvent atom of solute atoms is poor.In general, the diameter between solute atoms and the solvent atom is poor larger, and the concentration of solute is higher, and its strengthening effect is better.Vickers' hardness under magnesium-holmium cast alloy room temperature can reach 121, and the mechanical performance index under the room temperature all reaches more than the 350MPa, is that other rare earth element can not be compared, and has stable high-temperature performance simultaneously.
2), add the Nd element: can increase separating out of MgRE phase, thereby increase the age hardening effect of alloy.
3) atomic size of interpolation Y element: Y and magnesium differs greatly, and can make the magnesium matrix dot matrix produce distortion, carries heavy alloyed homogenization temperature and Young's modulus, slow down diffusion and self-diffusion process, and the speed of reduction climb of dislocation is strengthened matrix.
4), add Al, Zn element: the precipitation strength of β-Mg17Al12 that aluminium forms by solution strengthening with magnesium is put forward heavy alloyed room temperature strength, and aluminium also can be carried heavy alloyed Production Practice of Casting Technologies; Zinc can improve intensity and the plasticity of alloy.
5), add La, Ce: can the reinforced alloys matrix, cerium lanthanum rare earth can be removed detrimental impurity in the melt in the fusion process simultaneously, reaches the effect of degasification, slagging-off, purification melt.
Magnesium-holmium of the present invention-yittrium alloy, mechanical property is splendid, and preferably toughness is arranged, and easily makes processing.
Embodiment
The below is described in detail preferred embodiment of the present invention, 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 more explicit defining.
Embodiment one
Choose starting material: the mass percentage content of described component is: Ho 2.58%; Y 1.26%; Nd 1.28%; Zn 0.25%; Al 6.65%; Ni 0.01%; Cu 0.02%; La 0.03%; Ce 0.015%; All the other are Mg;
Processing: above-mentioned raw materials is carried out melting-cast-extrusion processing, obtain magnesium-holmium-yittrium alloy sample one.
Embodiment two
Choose starting material: the mass percentage content of described component is: Ho 1.56%; Y 0.50%; Nd 0.61%; Zn 0.01%; Al 3.25%; Ni 0.01%; Cu 0.015%; All the other are Mg;
Processing: above-mentioned raw materials is carried out melting-cast-extrusion processing, obtain magnesium-holmium-yittrium alloy sample two.
Embodiment three
Choose starting material: the mass percentage content of described component is: Ho 1.56%; Y 0.50%; Nd 0.61%; Zn 0.01%; Al 3.25%; Ni 0.01%; Cu 0.015%; La 0.01%; Ce 0.01%; All the other are Mg;
Processing: above-mentioned raw materials is carried out melting-cast-extrusion processing, obtain magnesium-holmium-yittrium alloy sample three.
Embodiment four
Choose starting material: the mass percentage content of described component is: Ho 2.80%; Y 1.58%; Nd 2.00%; Zn 0.55%; Al 7.75%; Ni 0.02%; Cu 0.025%; La 0.05%; Ce 0.02%; All the other are Mg;
Processing: above-mentioned raw materials is carried out melting-cast-extrusion processing, obtain magnesium-holmium-yittrium alloy sample four.
Embodiment five
Choose starting material: the mass percentage content of described component is: Ho 2.80%; Y 1.58%; Nd 2.00%; Zn 0.55%; Al 7.75%; Ni 0.02%; Cu 0.025%; All the other are Mg;
Processing: above-mentioned raw materials is carried out melting-cast-extrusion processing, obtain magnesium-holmium-yittrium alloy sample five.
Magnesium-holmium of the present invention-yittrium alloy has the following advantages:
1), add the Ho element: the atomic radius of holmium is less than Gd, and the 4f orbital electron is many, and chemically reactive is high, and pure metal is called solution strengthening through the phenomenon that intensity, hardness after the suitable alloying improve.The effect of solution strengthening is decided by that the diameter of character, concentration and solvent atom of solute atoms is poor.In general, the diameter between solute atoms and the solvent atom is poor larger, and the concentration of solute is higher, and its strengthening effect is better.Vickers' hardness under magnesium-holmium cast alloy room temperature can reach 121, and the mechanical performance index under the room temperature all reaches more than the 350MPa, is that other rare earth element can not be compared, and has stable high-temperature performance simultaneously.
2), add the Nd element: can increase separating out of MgRE phase, thereby increase the age hardening effect of alloy.
3) atomic size of interpolation Y element: Y and magnesium differs greatly, and can make the magnesium matrix dot matrix produce distortion, carries heavy alloyed homogenization temperature and Young's modulus, slow down diffusion and self-diffusion process, and the speed of reduction climb of dislocation is strengthened matrix.
4), add Al, Zn element: the precipitation strength of β-Mg17Al12 that aluminium forms by solution strengthening with magnesium is put forward heavy alloyed room temperature strength, and aluminium also can be carried heavy alloyed Production Practice of Casting Technologies; Zinc can improve intensity and the plasticity of alloy.
5), add La, Ce: can the reinforced alloys matrix, cerium lanthanum rare earth can be removed detrimental impurity in the melt in the fusion process simultaneously, reaches the effect of degasification, slagging-off, purification melt.
Magnesium-holmium of the present invention-yittrium alloy, mechanical property is splendid, and preferably toughness is arranged, and easily makes processing.
The above only is embodiments of the invention; be not so limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes description of the present invention to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (4)
1. magnesium-holmium-yittrium alloy is characterized in that, the mass percentage content of its component is:
Ho 1.56%~2.80% ；
Y 0.50%~1.58%；
Nd 0.61%~2.00% ；
Zn 0.01%~0.55%；
Al 3.25%~7.75%；
Ni 0.01%~0.02% ；
Cu 0.015%~0.025% ；
All the other are Mg and inevitable impurity.
2. magnesium-holmium according to claim 1-yittrium alloy is characterized in that, the mass percentage content of described component is:
Ho 2.58% ；
Y 1.26% ；
Nd 1.28% ；
Zn 0.25%；
Al 6.65%；
Ni 0.01% ；
Cu 0.02% ；
All the other are Mg and inevitable impurity.
3. magnesium-holmium according to claim 1-yittrium alloy is characterized in that, described magnesium-holmium-yittrium alloy also comprises the La of 0.01 ~ 0.05% mass percent and the Ce of 0.01 ~ 0.02% mass percent.
4. magnesium-holmium according to claim 3-yittrium alloy is characterized in that, described magnesium-holmium-yittrium alloy also comprises the La of 0.03% mass percent and the Ce of 0.015% mass percent.
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| CN2012105561179A CN103014466A (en) | 2012-12-20 | 2012-12-20 | Magnesium-holmium-yttrium alloy |
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| CN2012105561179A CN103014466A (en) | 2012-12-20 | 2012-12-20 | Magnesium-holmium-yttrium alloy |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109182858A (en) * | 2018-11-14 | 2019-01-11 | 哈尔滨工程大学 | One kind heat resistance magnesium alloy containing Ho and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1563459A (en) * | 2004-04-22 | 2005-01-12 | 上海交通大学 | Mg-Al based magnesium alloy in high intensity and high plasticity |
| CN101078080A (en) * | 2007-07-04 | 2007-11-28 | 北京有色金属研究总院 | Creep resistance magnesium alloy and preparation method thereof |
| CN101220432A (en) * | 2007-12-29 | 2008-07-16 | 中国科学院长春应用化学研究所 | Cerium lanthanum containing high-strength anti-corrosion die-casting magnesium alloy |
| CN101824571A (en) * | 2010-03-09 | 2010-09-08 | 扬州宏福铝业有限公司 | Mg-Al-Zn-RE wrought magnesium alloy containing Ce-La mixed rare earth and production method and application thereof |
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- 2012-12-20 CN CN2012105561179A patent/CN103014466A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1563459A (en) * | 2004-04-22 | 2005-01-12 | 上海交通大学 | Mg-Al based magnesium alloy in high intensity and high plasticity |
| CN101078080A (en) * | 2007-07-04 | 2007-11-28 | 北京有色金属研究总院 | Creep resistance magnesium alloy and preparation method thereof |
| CN101220432A (en) * | 2007-12-29 | 2008-07-16 | 中国科学院长春应用化学研究所 | Cerium lanthanum containing high-strength anti-corrosion die-casting magnesium alloy |
| CN101824571A (en) * | 2010-03-09 | 2010-09-08 | 扬州宏福铝业有限公司 | Mg-Al-Zn-RE wrought magnesium alloy containing Ce-La mixed rare earth and production method and application thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109182858A (en) * | 2018-11-14 | 2019-01-11 | 哈尔滨工程大学 | One kind heat resistance magnesium alloy containing Ho and preparation method thereof |
| CN109182858B (en) * | 2018-11-14 | 2020-12-04 | 哈尔滨工程大学 | Ho-containing heat-resistant magnesium alloy and preparation method thereof |
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Application publication date: 20130403 |