CN101624672B - Tin-aluminum-calcium heat-resisting magnesium alloy - Google Patents
Tin-aluminum-calcium heat-resisting magnesium alloy Download PDFInfo
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- CN101624672B CN101624672B CN2009101045598A CN200910104559A CN101624672B CN 101624672 B CN101624672 B CN 101624672B CN 2009101045598 A CN2009101045598 A CN 2009101045598A CN 200910104559 A CN200910104559 A CN 200910104559A CN 101624672 B CN101624672 B CN 101624672B
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Abstract
The invention discloses a tin-aluminum-calcium heat-resisting magnesium alloy comprising the following components in percentage by weight: 2-5% of tin, 1-3% of aluminum, 0.5-2% of calcium and the balance of magnesium. The heat-resisting magnesium alloy uses metallic elements such as tin, aluminum and calcium having relatively lower price to be alloyed with magnesium, and takes advantages of the characteristic that the tin element and the calcium element are molten in the magnesium at high temperature while forming high melting point dispersion strengthening phase at relatively low temperature to strengthen the matrix and the crystal boundary of the magnesium alloy. The aluminum element is utilized to strengthen the matrix and improve the corrosion resisting property of the magnesium alloy material, the mechanical property of the magnesium alloy is equal to AZ91 at normal temperature and equal to AE42 at 150-200 DEG C, and the cost of production is low, therefore, the material is quite suitable for being used as the processing material of automobile components, especially suitable for processing automobile power train parts.
Description
Technical field
The present invention relates to the material technology field, be specifically related to a kind of tin-aluminum-calcium heat-resisting magnesium alloy.
Background technology
Magnesium is little because of its density, specific tenacity is high and the good work material that is suitable as very much automobile component of vibration damping; But magnesium is in hot environment, and its creep strength and yield strength can sharply descend, and lose the high strength that it should have.At this situation, prior art has researched and developed polytype magnesium alloy materials so that it has good resistance toheat.
And cast magnesium alloys (as AZ91) commonly used, its yield strength raises and can obviously reduce with temperature, and especially yield strength sharply descends when use temperature surpasses 120 ℃, thereby only can be applied to the environment below 120 ℃.And the AS41 of AS system, the raising of its resistance to elevated temperatures is not remarkable with respect to AZ91, and room-temperature mechanical property is poor, easily forms thick Chinese character shape Mg
2Si tissue, and casting technique complexity, corrosion resistance nature are not good; The tin-aluminum-calcium heat-resisting magnesium alloy of other kind contains rare valuable metallic element even radioelement (as thorium) mostly, contain rare earth about 2% as the AE42-of AE system, Mg-Sc system contains scandium, the WE43 of WE system contains 4% yttrium and 3% rare earth, the QE22 of QE system contains 2.5% silver medal and 2% rare earth, Mg-Th is that HK31 contains 3.3% thorium and 0.7% zirconium, though the tin-aluminum-calcium heat-resisting magnesium alloy resistance toheat of these kinds is good, but processing requirement height, the production cost height made, the production that is used for automobile component will improve manufacturing cost greatly.
Therefore, need a kind of tin-aluminum-calcium heat-resisting magnesium alloy material, its heat-and corrosion-resistant performance is good, creep strength is high, and cost is low.
Summary of the invention
In view of this, the purpose of this invention is to provide a kind of tin-aluminum-calcium heat-resisting magnesium alloy material, the heat-and corrosion-resistant performance is good, creep strength is high, and cost is low.
Tin-aluminum-calcium heat-resisting magnesium alloy of the present invention comprises tin 2～5%, aluminium 1～3% and Ca 0.5～2% by weight percentage, and surplus is a magnesium.
The invention has the beneficial effects as follows: tin-aluminum-calcium heat-resisting magnesium alloy material of the present invention adopts metallic element tin, aluminium and the calcium of relative low price to carry out magnesium alloy chemical, make full use of tin and calcium constituent is fused to magnesium at high temperature, relatively form high-melting-point dispersion-strengthened phase reinforced magnesium alloy matrix and crystal boundary during low temperature, utilize aluminium element to strengthen matrix and improved the corrosion resisting property of magnesium alloy materials; Tin-aluminum-calcium heat-resisting magnesium alloy material of the present invention, its mechanical property are suitable with AZ91 at normal temperatures, and be suitable with AE42 under 150-200 ℃, and production cost is low, is suitable as very much the work material of automobile component, is particularly suited for processing automobile power assembly parts.
Other advantages of the present invention, target and feature will be set forth to a certain extent in the following description, and to a certain extent, based on being conspicuous to those skilled in the art, perhaps can obtain instruction from the practice of the present invention to investigating hereinafter.Target of the present invention and other advantages can realize and obtain by following specification sheets and claims.
Embodiment
The present invention will be further described below with reference to embodiment.
Embodiment one:
The tin-aluminum-calcium heat-resisting magnesium alloy of present embodiment comprises tin 2%, aluminium 3% and Ca 0.5% by weight percentage, and surplus is a magnesium.
The tin-aluminum-calcium heat-resisting magnesium alloy of present embodiment, its mechanical property is as follows:
| Tensile strength Mpa | Yield strength Mpa | Unit elongation % | Creep speed (150 ℃, 50Mpa) %/s | |
| Room temperature | 225 | 145 | 6 | - |
| 150℃ | 127 | 66 | 11 | 1.18×10 -9 |
Embodiment two:
The tin-aluminum-calcium heat-resisting magnesium alloy of present embodiment comprises tin 5%, aluminium 1% and Ca 2% by weight percentage, and surplus is a magnesium.
The tin-aluminum-calcium heat-resisting magnesium alloy of present embodiment, its mechanical property is as follows:
| Tensile strength Mpa | Yield strength Mpa | Unit elongation % | Creep speed (150 ℃, 50Mpa) %/s | |
| Room temperature | 218 | 143 | 6.5 | - |
| 150℃ | 130.5 | 70.5 | 10.5 | 1.30×10 -9 |
Embodiment three
The tin-aluminum-calcium heat-resisting magnesium alloy of present embodiment comprises tin 4%, aluminium 2% and Ca 1.5% by weight percentage, and surplus is a magnesium.
The tin-aluminum-calcium heat-resisting magnesium alloy of present embodiment, its mechanical property is as follows:
| Tensile strength Mpa | Yield strength Mpa | Unit elongation % | Creep speed (150 ℃, 50Mpa) %/s | |
| Room temperature | 222.5 | 145 | 5.5 | - |
| 150℃ | 132 | 69 | 12 | 1.26×10 -9 |
Explanation is at last, the magnesium alloy of above embodiment may also comprise unavoidable impurities, but do not influence technique effect of the present invention, simultaneously, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from the aim and the scope of the technical program, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (1)
1. tin-aluminum-calcium heat-resisting magnesium alloy, it is characterized in that: comprise tin 2～5%, aluminium 1～3% and calcium 0.5～2% by weight percentage, surplus is a magnesium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101045598A CN101624672B (en) | 2009-08-07 | 2009-08-07 | Tin-aluminum-calcium heat-resisting magnesium alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101045598A CN101624672B (en) | 2009-08-07 | 2009-08-07 | Tin-aluminum-calcium heat-resisting magnesium alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101624672A CN101624672A (en) | 2010-01-13 |
| CN101624672B true CN101624672B (en) | 2011-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101045598A Expired - Fee Related CN101624672B (en) | 2009-08-07 | 2009-08-07 | Tin-aluminum-calcium heat-resisting magnesium alloy |
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| CN (1) | CN101624672B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108425052A (en) * | 2018-04-13 | 2018-08-21 | 上海海洋大学 | A kind of heat-resistance high-strength wrought magnesium alloy and preparation method thereof |
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2009
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| CN101624672A (en) | 2010-01-13 |
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