CN101386945B - Toughness magnesium alloy and preparation method thereof - Google Patents

Toughness magnesium alloy and preparation method thereof Download PDF

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Publication number
CN101386945B
CN101386945B CN2008101550906A CN200810155090A CN101386945B CN 101386945 B CN101386945 B CN 101386945B CN 2008101550906 A CN2008101550906 A CN 2008101550906A CN 200810155090 A CN200810155090 A CN 200810155090A CN 101386945 B CN101386945 B CN 101386945B
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magnesium alloy
alloy
percentage composition
quality percentage
preparation
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CN101386945A (en
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赵浩峰
王玲
吴红艳
刘斌
王维
陶诏灵
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Nanjing University of Information Science and Technology
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Nanjing University of Information Science and Technology
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Abstract

The invention provides a novel magnesium alloy with good room-temperature toughness and a preparation method thereof. The compositions in mass percentage of the alloy are 0.5 to 6 percent of zinc, 0.5to 5 percent of tin, 0.05 to 5 percent of plumbum, and the balance being magnesium. The preparation method for the magnesium alloy comprises the following steps: the compositions of 0.5 to 5 percentof the tin, 0.05 to 5 percent of the plumbum, 0.5 to 6 percent of the zinc and the residual magnesium are mixed according to the mass percentage; pure magnesium ingots, pure tin strips, pure plumbum blocks and zinc ingots which are prepared are heated and melt in N2CO2SF6 mixed protective atmosphere, wherein the volume ratio of N2 to CO2 to SF6 is 8 to 16 to 76; and the temperature is raised to between 700 and 725 DEG C, and the magnesium alloy with toughness is obtained after heat preservation for 5 to 10 minutes and cooling.

Description

Tough magnesium alloy and preparation method thereof
One, technical field
The present invention relates to a kind of tough magnesium alloy and preparation method thereof, be specifically related to tough magnesium alloy of a kind of zincy lead tin and preparation method thereof, belong to the magnesium alloy technical field,
Two, background technology
Magnesium alloy is widely used in the Industrial products manufacturing because of it has specific tenacity and the high performance characteristics of specific rigidity.But plasticity, the toughness of existing ordinary magnesium alloy are relatively poor.Have only some researchs at present to high plastic magnesium alloy:
200610026842.X propose the brilliant enhanced high-ductility of a kind of spontaneous standard wrought magnesium alloys, belong to the metallic substance technical field.This invention component and weight percent thereof are: 2-10%Zn, and 0.5-6%Gd, 0-1.0%Zr, impurity element Fe＜0.005%, Ni＜0.002%, all the other are Mg.This invention alloy contains accurate crystalline phase, be formed in the as-cast structure with dentrite form original position, through extruding or rolling thermal distortion technology, this accurate crystalline phase fragmentation distributes along deformation direction, the accurate crystalline phase of secondary of and crystal boundary place diffusion-precipitation distribution inner in the extruding or the operation of rolling simultaneously at matrix, thus the performance of alloy strengthened.
200810069464.2 a kind of wrought magnesium alloys with high-yield-ratio and high-ductility is provided, the weight percent of this alloy each component is zinc 1.0%～2.0%, zirconium 0.1%～0.6%, rare earth erbium 0.1%～0.8%, and all the other are magnesium and unavoidable impurities.The oxygen that is involved in impurity element, magnesium and the alloy liquid in erbium and the alloy etc. combines and forms the small and dispersed precipitated phase, effectively purifies alloy, and promote in the thermal deformation process dynamic recrystallization, hinder recrystal grain and grow up.
More than each patent application all be on the basis of magnesium zinc mother alloy, add toughness, plasticity and other performance that a certain amount of rare earth element and other yuan usually improve magnesium alloy, the degree of improvement is subject to precursor alloy, does not form independently tough magnesium alloy system.
Three, summary of the invention
Deal with problems:
The present invention is directed to above-mentioned technological deficiency, a kind of good room temperature flexible novel magnesium alloy that has is provided.
The preparation method that above-mentioned magnesium alloy also is provided in addition of the present invention.
Technical scheme:
A kind of tough magnesium alloy, the quality percentage composition of alloying constituent is: 0.5～6%Zn, 0.5～5%Sn, 0.05～5%Pb, all the other are Mg.
Wherein, also containing the quality percentage composition in the alloy is 0.01～4% Zr element.
Wherein, also containing the quality percentage composition in Sn, Pb, Zn, Mg alloy is 0.01～4% Sr element; And to contain the quality percentage composition in Sn, Pb, Zn, Mg, Zr alloy be 0.01～4% Sr element.
Wherein, also containing the quality percentage composition in Sn, Pb, Zn, Mg alloy is 0.01～4% Mn element; And to contain the quality percentage composition in alloy Sn, Pb, Zn, Mg, Zr alloy be 0.01～4% Mn element.
In addition, can also contain the rare earth element that the quality percentage composition is 0.001-1% in above-mentioned several magnesium alloy, rare earth element is as La, Pr, Ce or Nd element.
A kind of preparation method of tough magnesium alloy, preparation process is: according to the quality percentage composition be 0.5～6%Zn, 0.5～5%Sn, 0.05～5%Pb, all the other prepare burden for the alloying constituent proportioning of Mg, with the above-mentioned pure Mg ingot for preparing, pure Sn bar, pure Pb piece, Zn ingot at N 2/ CO 2/ SF 6Heat fused together in the hybrid protection atmosphere, N in the hybrid protection atmosphere 2, CO 2And SF 6Volume ratio be 8: 16: 76.When temperature rises to 700～725 ℃, be incubated 4～8 minutes postcooling and obtain tough magnesium alloy.
Wherein, also can add a small amount of one or more other metallic element or rare earth elements in the described magnesium alloy.The metallic element that has can the master alloy piece form add, as the adding of Zr, Sr element, with the form of Mg-Zr master alloy piece and Mg-Sr master alloy piece.
Wherein, other metallic element that is added can be Zr, Sr or Mn, or adds Zr and Sr simultaneously; Or while Zr and Mn.
In addition also can be in the preparation process of above-mentioned alloy to wherein adding rare earth element such as La, Pr, Ce or Nd element etc.
Beneficial effect of the present invention:
Tough magnesium alloy of the present invention only uses conventional elements such as common tin, lead, zinc, has avoided using a large amount of rare your elements, and process for producing is simple, and the cost of alloy is lower, the toughness height.Under the effect of a certain amount of Sr or Mn or Zr, it is more obvious that tin, lead, zinc increase action effect to the toughness of magnesium.
Four, description of drawings
Fig. 1 the present invention is the scanning electron microscope tissue that contains the tough magnesium alloy of 3%Zn, 2%Sn and 3%Pb.
Bright place is the magnesium tin, lead and zinc compound in the magnesium alloy among the figure.
Five, embodiment
The invention will be further described below in conjunction with example, the span of the quality percentage composition in following examples, and that represents raw material can get quality by interior of this content range, and each embodiment can form the multiple magnitude relation of using.
Embodiment one
Toughness magnesium tin, lead and zinc alloy, its preparation process is: according to the quality percentage composition be 0.5～6%Zn, 0.5～5%Sn, 0.05～5%Pb, all the other prepare burden for the alloying constituent proportioning of Mg, with the above-mentioned pure Mg ingot for preparing, pure Sn bar, pure Pb piece, Zn ingot at N 2/ CO 2/ SF 6Heat fused together in the hybrid protection atmosphere when temperature rises to 700～720 ℃, is incubated 5～10 minutes postcooling and obtains tough magnesium alloy.Wherein: N in the hybrid protection atmosphere 2, CO 2And SF 6Volume ratio be 8: 16: 76.
Embodiment two
Toughness magnesium tin, lead and zinc zirconium alloy, its preparation process is: according to the quality percentage composition be 0.5～6%Zn, 0.5～5%Sn, 0.05～5%Pb, Zr0.01～4%, all the other prepare burden for the alloying constituent proportioning of Mg, with the above-mentioned pure Mg ingot for preparing, pure Sn bar, pure Pb piece, Zn ingot, Mg-Zr master alloy piece at N 2/ CO 2/ SF 6Heat fused together in the hybrid protection atmosphere when temperature rises to 700～725 ℃, is incubated 5～10 minutes postcooling and obtains tough magnesium alloy.Wherein: N in the hybrid protection atmosphere 2, CO 2And SF 6Volume ratio be 8: 16: 76; The quality percentage composition of Zr is 30% in the Mg-Zr master alloy piece.
Embodiment three
Toughness magnesium tin, lead and zinc strontium alloy, its preparation process is: according to the quality percentage composition be 0.5～6%Zn, 0.5～5%Sn, 0.05～5%Pb, Sr0.01～4%, all the other prepare burden for the Mg composition proportion, with the above-mentioned pure Mg ingot for preparing, pure Sn bar, pure Pb piece, Zn ingot, Mg-Zr master alloy piece, Mg-Sr master alloy piece at N 2/ CO 2/ SF 6Heat fused together in the hybrid protection atmosphere when temperature rises to 700～720 ℃, is incubated 5～10 minutes postcooling and obtains tough magnesium alloy.Wherein: N in the hybrid protection atmosphere 2, CO 2And SF 6Volume ratio be 8: 16: 76; The quality percentage composition of Sr is 40% in the Mg-Sr master alloy piece.
Embodiment four
Toughness magnesium tin, lead and zinc manganese alloy, its preparation process is: according to the quality percentage composition be 0.5～6%Zn, 0.5～5%Sn, 0.05～5%Pb, Mn0.01～4%, all the other prepare burden for the composition proportion of Mg, with the above-mentioned pure Mg ingot for preparing, pure Sn bar, pure Pb piece, Zn ingot, pure Mn sheet at N 2/ CO 2/ SF 6Heat fused together in the hybrid protection atmosphere when temperature rises to 700～720 ℃, is incubated 5～10 minutes postcooling and obtains tough magnesium alloy.Wherein: N in the hybrid protection atmosphere 2, CO 2And SF 6Volume ratio be 8: 16: 76.
Embodiment five
Toughness magnesium tin, lead and zinc zirconium strontium alloy, its preparation process is: according to the quality percentage composition be 0.5～6%Zn, 0.5～5%Sn, 0.05～5%Pb, Sr0.01～4%, Zr0.01～4%, all the other prepare burden for the Mg composition proportion, with the above-mentioned pure Mg ingot for preparing, pure Sn bar, pure Pb piece, Zn ingot, Mg-Sr master alloy piece, at N 2/ CO 2/ SF 6Heat fused together in the hybrid protection atmosphere.When temperature rises to 700～720 ℃, be incubated 5～10 minutes postcooling and obtain tough magnesium alloy.Wherein: N in the hybrid protection atmosphere 2, CO 2And SF 6Volume ratio be 8: 16: 76; The quality percentage composition of Sr is 40% in the Mg-Sr master alloy piece; The quality percentage composition of Zr is 30% in the Mg-Zr master alloy piece.
Embodiment six
Toughness magnesium tin, lead and zinc zirconium manganese alloy, its preparation process is: according to the quality percentage composition be 0.5～6%Zn, 0.5～5%Sn, 0.05～5%Pb, Mn0.01～4%, Zr0.01～4%, all the other prepare burden for the composition proportion of Mg, with the above-mentioned pure Mg ingot for preparing, pure Sn bar, pure Pb piece, Zn ingot, pure Mn sheet, Mg-Zr master alloy piece at N 2/ CO 2/ SF 6Heat fused together in the hybrid protection atmosphere when temperature rises to 700～720 ℃, is incubated 5～10 minutes postcooling and obtains tough magnesium alloy.Wherein: N in the hybrid protection atmosphere 2, CO 2And SF 6Volume ratio be 8: 16: 76; The quality percentage composition of Zr is 30% in the Mg-Zr master alloy piece.
Embodiment seven
Toughness magnesium tin, lead and zinc zirconium manganese neodymium alloy, its preparation process is: according to the quality percentage composition be 0.5～6%Zn, 0.5～5%Sn, 0.05～5%Pb, Mn0.01～4%, Zr0.01～4%, 0.001-1% rare earth element nd, all the other prepare burden for the composition proportion of Mg, with the above-mentioned pure Mg ingot for preparing, pure Sn bar, pure Pb piece, Zn ingot, pure Mn sheet, Nd piece, Mg-Zr master alloy piece, at N 2/ CO 2/ SF 6Heat fused together in the hybrid protection atmosphere when temperature rises to 700～720 ℃, is incubated 5～10 minutes postcooling and obtains tough magnesium alloy.Wherein: N in the hybrid protection atmosphere 2, CO 2And SF 6Volume ratio be 8: 16: 76; The quality percentage composition of Zr is 30% in the Mg-Zr master alloy piece.
Experimental data:
Following table is the magnesium alloy toughness index parameter of different components, and wherein comparative alloy is the product of prior art, and product 1-product 5 is for adopting the resulting product of the technology of the present invention.
The alloy numbering Composition (quality percentage composition) Impelling strength/J/cm 2
Comparative alloy Al is 9%, and Zn is 1%, and all the other are Mg 8
Product 1 Sn is 3%, and Pb is 2%, and Zn is 3%, and all the other are Mg 18
The alloy numbering Composition (quality percentage composition) Impelling strength/J/cm 2
Product 2 Sn is 3%, and Pb is 2%, and Zn is 2%, and Zr is 3%, and all the other are Mg 22
Product 3 Sn is 3%, and Pb is 2%, and Zn is 2%, and Sr is 3%, and all the other are Mg 28
Product 4 Sn is 3%, and Pb is 2%, and Zn is 2%, and Mn is 3%, and all the other are Mg 29
Product 5 Sn is 3%, and Pb is 2%, and Zn is 2%, and Mn is 3%, Zr be 0.5% all the other be Mg 31
As seen from the above table, add Sn, Pb, Zn element in the magnesium alloy after, the toughness of alloy obviously increases.Simultaneously under the effect of Sr or Mn or Zr metallic element, it is more obvious that tin, lead, zinc increase action effect to the toughness of magnesium.

Claims (12)

1. tough magnesium alloy, the quality percentage composition of alloying constituent is: 0.5～6%Zn, 0.5～5%Sn, 0.05～5%Pb, all the other are Mg.
2. tough magnesium alloy according to claim 1 wherein, also contains the quality percentage composition and is 0.01～4% Zr element in the alloy.
3. tough magnesium alloy according to claim 1 and 2 wherein, also contains the quality percentage composition and is 0.01～4% Sr element in the alloy.
4. tough magnesium alloy according to claim 1 and 2 wherein, also contains the quality percentage composition and is 0.01～4% Mn element in the alloy.
5. tough magnesium alloy according to claim 1 and 2 wherein, also contains the rare earth element that the quality percentage composition is 0.001-1% in the alloy.
6. tough magnesium alloy according to claim 3 wherein, also contains the rare earth element that the quality percentage composition is 0.001-1% in the alloy.
7. tough magnesium alloy according to claim 4 wherein, also contains the rare earth element that the quality percentage composition is 0.001-1% in the alloy.
8. the preparation method of a tough magnesium alloy, preparation process is: according to the quality percentage composition be 0.5～6%Zn, 0.5～5%Sn, 0.05～5%Pb, all the other prepare burden for the alloying constituent proportioning of Mg, with the above-mentioned pure Mg ingot for preparing, pure Sn bar, pure Pb piece, Zn ingot at N 2/ CO 2/ SF 6Heat fused together in the hybrid protection atmosphere when temperature rises to 700～725 ℃, is incubated 4～8 minutes postcooling and obtains tough magnesium alloy; N in the hybrid protection atmosphere wherein 2, CO 2And SF 6Volume ratio be 8: 16: 76.
9. the preparation method of tough magnesium alloy according to claim 8 wherein, also adds the quality percentage composition and is 0.01～4% metallic element Zr, Sr or Mn in the described preparation magnesium alloy process.
10. the preparation method of tough magnesium alloy according to claim 8 wherein, also adds the quality percentage composition and is 0.01～4% Zr and 0.01～4% Sr in the described preparation magnesium alloy process.
11. the preparation method of tough magnesium alloy according to claim 8 wherein, also adds the quality percentage composition and is 0.01～4% Zr and 0.01～4% Mn in the described preparation magnesium alloy process.
12. according to Claim 8, the preparation method of 9,10 or 11 described tough magnesium alloys, wherein, also add rare-earth elements La, Pr, Ce or the Nd that the quality percentage composition is 0.001-1% in the described preparation magnesium alloy process.
CN2008101550906A 2008-11-03 2008-11-03 Toughness magnesium alloy and preparation method thereof Expired - Fee Related CN101386945B (en)

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WO2010056130A1 (en) * 2008-11-14 2010-05-20 Auckland Uniservices Limited Magnesium based alloys and processes for preparation thereof
CN102031432A (en) * 2010-12-22 2011-04-27 重庆市科学技术研究院 Sn-containing fine-grained magnesium-lithium tin alloy
CN104561717B (en) * 2014-12-04 2017-03-01 沈阳工业大学 high performance heat resistant cast magnesium alloy and preparation method thereof
CN106636817A (en) * 2017-01-03 2017-05-10 青海大学 High-strength and high-plasticity magnesium alloy and preparation method thereof
CN111254333B (en) * 2020-04-02 2021-06-29 吉林大学 Multi-element high-strength corrosion-resistant wrought magnesium alloy and preparation method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB380669A (en) * 1931-08-06 1932-09-22 American Magnesium Corp Improvements in or relating to magnesium base alloys
GB388515A (en) * 1931-09-12 1933-03-02 American Magnesium Corp Improvements in or relating to magnesium base alloys

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB380669A (en) * 1931-08-06 1932-09-22 American Magnesium Corp Improvements in or relating to magnesium base alloys
GB388515A (en) * 1931-09-12 1933-03-02 American Magnesium Corp Improvements in or relating to magnesium base alloys

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JP特开2005-240129A 2005.09.08

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