CN100439534C - High tenacity casting magnesium alloy - Google Patents
High tenacity casting magnesium alloy Download PDFInfo
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- CN100439534C CN100439534C CNB2007100194651A CN200710019465A CN100439534C CN 100439534 C CN100439534 C CN 100439534C CN B2007100194651 A CNB2007100194651 A CN B2007100194651A CN 200710019465 A CN200710019465 A CN 200710019465A CN 100439534 C CN100439534 C CN 100439534C
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Abstract
The invention relates to a cast magnesium alloy material, especially relates to a cast magnesium aloy material with high toughness. The comprised component and the weight proportion are as follows: Al: l5.0-6.0%, Ca: 1.0-2.0%, Ti: 0.15-0.25%, Y: 0.5-1.0%, and left is Mg. The invention is characterized by essentiality and dramatically improved quality, the performance at normal temperature (20 Deg .C) comprises: strength for extension is larger than 210 Mpa, yield strength is larger than 140 Mpa, elongation percentage is larger than 4%; and the perforamnce at 150 Deg. C comprises: strength for extension is larger than 160 Mpa, yield strength is larger than 110 Mpa, elongation percentage is larger than 15%.
Description
Technical field
What the present invention relates to is a kind of casting magnesium alloy material, particularly a kind of casting magnesium alloy material with high-strong toughness.
Background technology
Retrieve domestic relevant magnesium alloy patent and find in February, 2006＜application number be 200610024085; Denomination of invention is the patent of invention of " high-strength heat-resisting magnesium alloy and preparation method thereof ", relates to a kind of high-strength heat-resistant rare earth magnesium alloy.It is characterized in that: the component of this magnesium-rare earth and weight percent thereof are: 3-12%Y, 2-6%Sm, 0.35-0.8%Zr, and the total amount of impurity element Si, Fe, Cu and Ni is less than 0.02%, and surplus is Mg.The deficiency of this high-strength heat-resistant rare earth magnesium alloy is: the rare earth element add-on is more, thereby can increase the production cost of alloy by a relatively large margin.
Summary of the invention
The invention provides a kind of less rare earth content that contains, have the casting magnesium alloy material of high-strong toughness.The concrete chemical ingredients of casting magnesium alloy material of the present invention (weight percent) is, Al:5.0-6.0%, and Ca:1.0-2.0%, Ti:0.15-0.25%, Y:0.5-1.0%, surplus is Mg.
Know-why of the present invention is: at the deficiencies in the prior art, improve design of alloy, improve cast magnesium alloys microstructure morphology and phase structure, increase the quantity of second phase, the form of improving second phase, size and distribution, thereby obtain good room temperature, high temperature comprehensive mechanical property.Aluminium is main strengthening element in this alloy, and it forms Mg by solution strengthening with magnesium
17Al
12(β) precipitation strength of phase improves alloy at room temperature intensity.Calcium is the element that is used to improve the alloy resistance toheat in this alloy, and Ca dissolves in Mg
17Al
12Make the thermotolerance of himself improve mutually.High temperature resistant phase Al on the crystal boundary
2Ca or (Mg, Al)
2The formation of Ca at high temperature has pinning effect to crystal boundary, and has reduced the solute velocity of diffusion at crystal boundary place, and grain-boundary strength is improved.Add a spot of calcium in the alloy and can improve the thermostability of β phase, simultaneously the also microstructure of refinement alloy significantly.Trace amount of titanium is the element that is used for refined cast structure in this alloy.Among the present invention, the adding of a small amount of Rare Earth Y has increased separating out of β phase, has further stablized the β phase, and improves its form, size and distribution; In addition, also promote a small amount of rare earth phase YAl
3Formation.Therefore, by rational design of alloy, make this invention (20-300 ℃) from the room temperature to high temperature all have good comprehensive mechanical properties.
The present invention has substantive distinguishing features and marked improvement, and its room-temperature property (20 ℃) reaches: tensile strength is greater than 210MPa, and yield strength is greater than 140MPa, and elongation is greater than 4%; 150 ℃ of performances of high temperature reach: tensile strength is greater than 160MPa, and yield strength is greater than 110MPa, and elongation is greater than 15%.
Embodiment
Provide following examples in conjunction with content of the present invention:
Embodiment 1: the chemical ingredients of magnesium alloy is as shown in table 1 below,
The chemical ingredients of magnesium alloy among table 1 embodiment 1 (massfraction, %)
At SO
2Melting in the crucible oven of atmosphere protection, in metal pattern, cast.X-ray diffraction material phase analysis and microstructure observation show, have obtained the β phase that content is more and size is tiny and have contained a certain amount of Al
2Ca, Mg
2Ca, YAl
3Etc. phase, the microstructure morphology of alloy is similar to the eutectic structure in the iron-carbon.
Its room-temperature property (20 ℃) reaches: tensile strength 210-230MPa, yield strength 140-170MPa, elongation 4.5-5.5%; 150 ℃ of performances of high temperature reach: tensile strength 160-180MPa, yield strength 110-130MPa, elongation 14-16%.
Embodiment 2: the chemical ingredients of magnesium alloy is as shown in table 2 below,
The chemical ingredients of magnesium alloy among table 2 embodiment 2 (massfraction, %)
Melting, casting, material phase analysis and microstructure observation's method be with embodiment 1, obtained content than more manying among the embodiment 1 and β phase that size is more tiny and contain Al than embodiment 1
2Ca, Mg
2Ca, YAl
3Deng mutually more, the microstructure morphology of alloy more approaches the eutectic structure in the iron-carbon.
Its room-temperature property (20 ℃) reaches: tensile strength 220-250MPa, yield strength 150-170MPa, elongation 5.0-5.5%; 150 ℃ of performances of high temperature reach: tensile strength 160-190MPa, yield strength 120-145MPa, elongation 15-18%.
Embodiment 3: the chemical ingredients of magnesium alloy is as shown in table 3 below,
The chemical ingredients of magnesium alloy among table 2 embodiment 2 (massfraction, %)
Melting, casting, material phase analysis and microstructure observation's method be with embodiment 1, obtained content than more manying among the embodiment 1 and β phase that size is more tiny and contain Al than embodiment 1
2Ca, Mg
2Ca, YAl
3Deng mutually more; And its β phase, Al
2Ca, Mg
2Ca, YAl
3Content is more than embodiment 2 parts omitted.
Its room-temperature property (20 ℃) reaches: tensile strength 220-250MPa, yield strength 150-180MPa, elongation 5-6%; 150 ℃ of performances of high temperature reach: tensile strength 170-200MPa, yield strength 120-150MPa, elongation 15-17%.
Claims (1)
1. high tenacity casting magnesium alloy is characterized in that: its chemical ingredients is by weight percentage, Al:5.0-6.0%, and Ca:1.0-2.0%, Ti:0.15-0.25%, Y:0.5-1.0%, surplus is Mg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100194651A CN100439534C (en) | 2007-01-26 | 2007-01-26 | High tenacity casting magnesium alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100194651A CN100439534C (en) | 2007-01-26 | 2007-01-26 | High tenacity casting magnesium alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101008061A CN101008061A (en) | 2007-08-01 |
| CN100439534C true CN100439534C (en) | 2008-12-03 |
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ID=38696721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100194651A Active CN100439534C (en) | 2007-01-26 | 2007-01-26 | High tenacity casting magnesium alloy |
Country Status (1)
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101367894B1 (en) * | 2011-01-06 | 2014-02-26 | 한국생산기술연구원 | Magnesium alloy for normal temperature |
| KR101402897B1 (en) | 2011-05-20 | 2014-06-02 | 한국생산기술연구원 | Manufacturing method of alloys and alloys fabricated by the same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0748646A (en) * | 1993-03-15 | 1995-02-21 | Toyota Motor Corp | High strength magnesium base alloy and production thereof |
| JPH08134581A (en) * | 1994-11-14 | 1996-05-28 | Mitsui Mining & Smelting Co Ltd | Production of magnesium alloy |
| KR20030044997A (en) * | 2003-05-23 | 2003-06-09 | 연우인더스트리(주) | High formability the Magnesium alloy and manufacture method of the Magnesium alloy product thereof |
| CN1563458A (en) * | 2004-04-15 | 2005-01-12 | 上海交通大学 | Tireining Mg-Al-Ca creep resisting alloy and fusion casting technique |
-
2007
- 2007-01-26 CN CNB2007100194651A patent/CN100439534C/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0748646A (en) * | 1993-03-15 | 1995-02-21 | Toyota Motor Corp | High strength magnesium base alloy and production thereof |
| JPH08134581A (en) * | 1994-11-14 | 1996-05-28 | Mitsui Mining & Smelting Co Ltd | Production of magnesium alloy |
| KR20030044997A (en) * | 2003-05-23 | 2003-06-09 | 연우인더스트리(주) | High formability the Magnesium alloy and manufacture method of the Magnesium alloy product thereof |
| CN1563458A (en) * | 2004-04-15 | 2005-01-12 | 上海交通大学 | Tireining Mg-Al-Ca creep resisting alloy and fusion casting technique |
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|---|---|
| CN101008061A (en) | 2007-08-01 |
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Address after: Gehu Lake Road Wujin District 213164 Jiangsu city of Changzhou province No. 1 Patentee after: Jiangsu Polytechnic University Address before: 213016 Department of science and technology, Jiangsu Polytechnic University, Baiyun Road, Jiangsu, Changzhou Patentee before: Jiangsu Polytechnic University |
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Effective date of registration: 20141204 Address after: 213311 Jiangsu city of Changzhou Province town street Yang Di drift tau 8-2 No. 7 Patentee after: Liyang Chang Technology Transfer Center Co., Ltd. Address before: Gehu Lake Road Wujin District 213164 Jiangsu city of Changzhou province No. 1 Patentee before: Jiangsu Polytechnic University |