CN1888108A - Cariaceous high-damping deformation magnesium alloy and its prepn process - Google Patents
Cariaceous high-damping deformation magnesium alloy and its prepn process Download PDFInfo
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- CN1888108A CN1888108A CN 200610010326 CN200610010326A CN1888108A CN 1888108 A CN1888108 A CN 1888108A CN 200610010326 CN200610010326 CN 200610010326 CN 200610010326 A CN200610010326 A CN 200610010326A CN 1888108 A CN1888108 A CN 1888108A
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Abstract
The process relates to excellent magnesium base material, and is coriaceous high-damping deformation magnesium alloy and its preparation process. For obtaining both high damping performance and high mechanical performance, the present invention adds Cu, Si and other alloy element with small solid solubility into Mg material to reduce dislocation pinning points and to raise damping performance, while adding Zr, Mn and other crystal grain fining alloy element to raise the mechanical performance. Through conventional extrusion on ingot and intense plastic deformation, the alloy has regulated grain orientation, superfine crystal structure and raised toughness and damping performance. The present invention has wide application value.
Description
Technical field
The present invention relates to a kind of mg-based material and preparation method thereof with high damping and good mechanical property.
Background technology
In the practical metallic substance, magnesium and alloy density thereof are minimum, are described as the ultralight amount material of 21 century.After nineteen nineties, development along with the magnesium smelting technology, magnesium output increases sharply, price descends, and particularly fields such as automobile, electronics, communication, aerospace and national defense and military industry have been brought the research of new round magnesium and used climax the increase day by day of magnesium alloy demand.Except that density was low, magnesium also has the another one distinguishing feature: in all light metal materials, pure magnesium had the highest damping capacity.But the intensity of pure magnesium is too low.And practical structure magnesium alloy, magnesium alloy as series such as Mg-Al-Zn, Mg-Zn-Zr and Mg-RE-Zr, its strengthening mechanism is mainly solution strengthening, precipitation strength etc., the solute atoms of these solid solutions and precipitated phase cause damping capacity to reduce greatly as the strong pinning point of magnesium basal slip dislocation.Along with the development of magnesium alloy research and the expansion of Application Areas, solve the contradiction between damping capacity and the mechanical property, the mg-based material that exploitation has high damping and good mechanical property simultaneously is one major issue to be solved.
Summary of the invention
The present invention has solved the damping capacity of magnesium alloy and the contradiction of mechanical property by adding suitable alloying element, adopting specific melting technology, deformation technique and thermal treatment process to prepare Cariaceous high-damping deformation magnesium alloy.
Cariaceous high-damping deformation magnesium alloy of the present invention can have following three kinds of proportionings:
(1) Mg-Zr-Cu-Mn magnesium alloy: described magnesium alloy comprises magnesium, zirconium, copper and manganese, the proportioning of each component (weight percent) is: zirconium 0.2～1.0%, copper 0.05～0.5%, manganese 0.05～1.5%, Fe＜0.003%, Ni＜0.003%, other impurity＜0.06%, surplus is a magnesium.
(2) Mg-Cu-Mn-Ce magnesium alloy: described magnesium alloy comprises magnesium, copper, manganese and cerium, the proportioning of each component (weight percent) is: copper 1～10%, manganese 0.3～8%, cerium 0.05～0.5%, Fe＜0.003%, Ni＜0.003%, other impurity＜0.06%, surplus are magnesium
(3) Mg-Si-Cu magnesium alloy: described magnesium alloy comprises magnesium, silicon and copper, and the proportioning of each component (weight percent) is: silicon 0.5～5%, copper: 0.2～3%, and Fe＜0.003%, Ni＜0.003%, other impurity＜0.06%, surplus is a magnesium.
The present invention is prepared as follows Cariaceous high-damping deformation magnesium alloy: a, melting: place the NaOH aqueous solution to soak greater than industrial high-purity magnesium of 99.96% purity, put into iron crucible after the oven dry and melt, protective atmosphere is 10vol% SF
6+ 90vol% CO
2, be warming up to 750～850 ℃, add alloying element according to said ratio, fully stir melt, pull dross on surface of fusant out after leaving standstill, be cooled to 640～680 ℃ and be cast in the swage tool; B, distortion: the magnesium alloy ingot of institute's melting is carried out conventional hot extrusion deformation, the control extrusion temperature is 320～400 ℃, and soaking time is 30 minutes, and extrusion speed is 50～120mm/min, extrusion ratio is 9～16: 1, and the magnesium alloy after the conventional crimp is carried out intense plastic strain; C, thermal treatment: the magnesium alloy after the distortion is heat-treated, and the control thermal treatment temp is 150～350 ℃, and soaking time is 0.5～10 hour.
The invention has the advantages that:
(1) composition advantage: selected the minimum alloying element of solid solubility in magnesium such as copper and silicon for use, according to the dislocation damping theory, the solid solution atomic percent in the magnesium alloy is little, and then the weak pinning point quantity of mobile dislocation is few, the damping capacity height of alloy; Select the alloying element of crystal grain thinnings such as zirconium and manganese for use, improved the mechanical property of magnesium alloy.
(2) process advantage: except that conventional hot extrusion, intense plastic strain technology-equal channel angle extrusion technique (ECAP) and multiway forging (MDF) have also been adopted, the distinguishing feature of intense plastic strain is: under the prerequisite of the sectional area that does not change material, can carry out repeated deformation to material, the accumulation strain amount can surpass 10, and the refinement material structure is adjusted grain orientation, obtain the superfine crystal particle material of bulk, significantly increase the intensity and the plasticity of material.
(3) equipment advantage: equipment of the present invention, comprise that alloy melting stove, heat extruder, equal channel angle extruding with pressing machine and heat treatment furnace, are conventional general-purpose equipment, portable strong, with low cost.
The accessible index of performance of the Cariaceous high-damping deformation magnesium alloy of the bright preparation of we is: tensile strength 320～380Mpa, yield strength 230～260Mpa, unit elongation＞10%, Q
-1＞0.01.
Embodiment
Embodiment one: the Cariaceous high-damping deformation magnesium alloy of present embodiment is the Mg-Zr-Cu-Mn alloy, the weight percent of each component is: zirconium 0.2～1.0%, copper 0.05～0.5%, manganese 0.05～1.5%, Fe＜0.003%, Ni＜0.003%, other impurity＜0.06%, surplus are magnesium.
Embodiment two: the Cariaceous high-damping deformation magnesium alloy of present embodiment is the Mg-Cu-Mn-Ce alloy, the weight percent of each component is: copper 1～10%, manganese 0.3～8%, cerium 0.05～0.5%, Fe＜0.003%, Ni＜0.003%, other impurity＜0.06%, surplus are magnesium.
Embodiment three: the Cariaceous high-damping deformation magnesium alloy of present embodiment is the Mg-Si-Cu alloy, the weight percent of each component is: silicon 0.5～5%, copper: 0.2～3%, and Fe＜0.003%, Ni＜0.003%, other impurity＜0.06%, surplus are magnesium.
Embodiment four: present embodiment is prepared as follows the Mg-Zr-Cu-Mn magnesium alloy:
(1) purity being placed concentration greater than industrial high-purity magnesium of 99.96% is after 0.5% the NaOH aqueous solution soaks 0.5 hour, to dry in 150 ℃ of loft drier; The pure magnesium of exsiccant is put into iron crucible melt, protective atmosphere is 10vol% SF
6+ 90% CO
2, be warming up to 750～850 ℃, add alloying element according to weight percent zirconium 0.2～1.0%, copper 0.05～0.5%, manganese 0.05～1.5%.Wherein zirconium and manganese add with the form of Mg-25Zr, Mg-20Mn master alloy respectively; Copper adds with the form of technical pure simple substance.After adding alloying element, fully stir melt, left standstill 20 minutes, pull dross on surface of fusant out, be cooled to 640～680 ℃ and be cast in the swage tool.
(2) magnesium alloy ingot with institute's melting carries out conventional hot extrusion, and hot extrusion is carried out on water pressure engine, and extrusion temperature is 320～400 ℃, soaking time 30 minutes, and extrusion speed is 50～120mm/min, extrusion ratio is 9～16: 1.Magnesium alloy after the conventional crimp is carried out equal channel angle crimp (EqualChannel Angular Pressing, ECAP), two interchannel angles of equal channel angle extrusion mould are 90 °, texturing temperature is 150～350 ℃, Deformation velocity is 20～60mm/min, rolling pass is 1～8 time, every time magnesium alloy along axis to same direction half-twist.
(3) magnesium alloy after extruding and the equal channel angle crimp is heat-treated, thermal treatment temp is 150～350 ℃, and soaking time is 0.5～10 hour.The mechanical property and the damping capacity of magnesium alloy see Table 1.
Embodiment five: present embodiment and embodiment four differences are, after magnesium alloy ingot carried out hot extrusion, carry out multiway forging (Multi-Directional Forging, MDF), the multiway forging temperature is 150～350 ℃, and strain rate is 1 * 10
-3～3 * 10
-2S
-1Three (Z) deformation sequence is X → Y → Z for X, Y, X, and Y and Z three between centers angles are 90 ° and satisfy the right-hand rule; It is 0.3～1.0 that each direction is forged dependent variable, and the accumulation strain amount is 7～10.The mechanical property and the damping capacity of magnesium alloy see Table 1.
Embodiment six: present embodiment and embodiment four differences are, pure magnesium fusion and be warming up to 750～850 ℃ after, add alloying element according to weight percent copper 1～10%, manganese 0.3～8%, cerium 0.05～0.5%.Wherein manganese and cerium add with the form of Mg-20Mn, Mg-30Ce master alloy respectively; Copper adds with the form of technical pure simple substance.The mechanical property and the damping capacity of magnesium alloy see Table 1.
Embodiment seven: present embodiment and embodiment six differences are, after magnesium alloy ingot carried out hot extrusion, carry out multiway forging (Multi-Directional Forging, MDF), the multiway forging temperature is 150～350 ℃, and strain rate is 1 * 10
-3～3 * 10
-2S
-1Three (Z) deformation sequence is X → Y → Z for X, Y, X, and Y and Z three between centers angles are 90 ° and satisfy the right-hand rule; It is 0.3～1.0 that each direction is forged dependent variable, and the accumulation strain amount is 7～10.The mechanical property and the damping capacity of magnesium alloy see Table 1.
Embodiment eight: present embodiment and embodiment four differences are, pure magnesium fusion and be warming up to 750～850 ℃ after, according to proportioning (weight percent) silicon 0.5～5%, copper: 0.2～3% adds alloying element.Silicon and copper add with the form of technical pure simple substance.The mechanical property and the damping capacity of magnesium alloy see Table 1.
Embodiment nine: present embodiment and embodiment eight differences are, after magnesium alloy ingot carried out hot extrusion, carry out multiway forging (Multi-Directional Forging, MDF), the multiway forging temperature is 150～350 ℃, and strain rate is 1 * 10
-3～3 * 10
-2S
-1Three (Z) deformation sequence is X → Y → Z for X, Y, X, and Y and Z three between centers angles are 90 ° and satisfy the right-hand rule; It is 0.3～1.0 that each direction is forged dependent variable, and the accumulation strain amount is 7～10.The mechanical property and the damping capacity of magnesium alloy see Table 1.
The mechanical property of table 1 Cariaceous high-damping deformation magnesium alloy and damping capacity
| Alloying constituent, wt% | Yield strength, MPa | Tensile strength, MPa | Unit elongation, % | Q -1 | |
| Embodiment five | Mg-0.58Zr-0.2Cu-0.1Mn | 135 | 212 | 18 | 0.023 |
| Embodiment six | 142 | 223 | 16 | 0.019 | |
| Embodiment seven | Mg-3.2Cu-0.8Mn-0.2Ce | 208 | 308 | 15 | 0.015 |
| Embodiment eight | 216 | 319 | 12 | 0.013 | |
| Embodiment nine | Mg-3.4Si-0.3Cu | 192 | 298 | 21 | 0.018 |
| Embodiment ten | 203 | 287 | 18 | 0.016 |
Claims (7)
1, Cariaceous high-damping deformation magnesium alloy, it is characterized in that described magnesium alloy is the Mg-Zr-Cu-Mn alloy, the weight percent of each component is: zirconium 0.2～1.0%, copper 0.05～0.5%, manganese 0.05～1.5%%, Fe＜0.003%, Ni＜0.003%, other impurity＜0.06%, surplus are magnesium.
2, Cariaceous high-damping deformation magnesium alloy is characterized in that described magnesium alloy is the Mg-Cu-Mn-Ce alloy, and the weight percent of each component is: copper 1～10%, manganese 0.3～8%, cerium 0.05～0.5%, Fe＜0.003%, Ni＜0.003%, other impurity＜0.06%, surplus is a magnesium.
3, Cariaceous high-damping deformation magnesium alloy is characterized in that described magnesium alloy is the Mg-Si-Cu alloy, and the weight percent of each component is: silicon 0.5～5%, copper: 0.2～3%, and Fe＜0.003%, Ni＜0.003%, other impurity＜0.06%, surplus is a magnesium.
4, the preparation method of Cariaceous high-damping deformation magnesium alloy is characterized in that described method is: a, melting: place the NaOH aqueous solution to soak greater than industrial high-purity magnesium of 99.96% purity, put into iron crucible after the oven dry and melt, protective atmosphere is 10vol%SF
6+ 90vol%CO
2, be warming up to 750～850 ℃, add alloying element according to the arbitrary proportioning of claim 1～3, fully stir melt, pull dross on surface of fusant out after leaving standstill, be cooled to 640～680 ℃ and be cast in the swage tool; B, distortion: the magnesium alloy ingot of institute's melting is carried out conventional hot extrusion, the control extrusion temperature is 320～400 ℃, and soaking time is 30 minutes, and extrusion speed is 50～120mm/min, extrusion ratio is 9～16: 1, and the magnesium alloy after the conventional crimp is carried out intense plastic strain; C, thermal treatment: the magnesium alloy after the distortion is heat-treated, and the control thermal treatment temp is 150～350 ℃, and soaking time is 0.5～10 hour.
5, the preparation method of Cariaceous high-damping deformation magnesium alloy according to claim 4 is characterized in that described viscous deformation is equal channel angle extruding or multiway forging.
6, the preparation method of Cariaceous high-damping deformation magnesium alloy according to claim 4, the concrete processing parameter that it is characterized in that described equal channel angle extruding is: two interchannel angles of equal channel angle extrusion mould are 90 °, texturing temperature is 150～350 ℃, Deformation velocity is 20～60mm/min, rolling pass is 1～8 time, every time magnesium alloy along axis to same direction half-twist.
7, the preparation method of Cariaceous high-damping deformation magnesium alloy according to claim 4, it is characterized in that the concrete processing parameter of described multiway forging is: the multiway forging temperature is 150～350 ℃, strain rate is 1 * 10
-3～3 * 10
-2S
-1, three shaft distortions are X → Y → Z in proper order, X, and Y and Z three between centers angles are 90 ° and satisfy the right-hand rule; It is 0.3～1.0 that each direction is forged dependent variable, and the accumulation strain amount is 7～10.
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| CN101805864A (en) * | 2010-04-06 | 2010-08-18 | 重庆大学 | High-damping and high-strength Mg-Cu-Mn-Zn-Y alloy and manufacturing method thereof |
| CN101892445A (en) * | 2010-07-07 | 2010-11-24 | 中南大学 | Method for preparing magnesium alloy bar with superhigh intensity by powerful deformation |
| CN101660034B (en) * | 2009-09-23 | 2011-03-30 | 江苏大学 | Preparation method of texture controllable fine grain metal material based on large strain deformation and recrystallization |
| CN103882273A (en) * | 2014-04-18 | 2014-06-25 | 重庆大学 | Mg-Mn wrought magnesium alloy and preparation method thereof |
| CN104690496A (en) * | 2013-12-04 | 2015-06-10 | 青岛润鑫伟业科贸有限公司 | Cold processing technological method for refining metal grains |
| CN105586553A (en) * | 2016-03-18 | 2016-05-18 | 成都青元泛镁科技有限公司 | Magnesium alloy stepped cooling multi-direction forging process |
| CN105779918A (en) * | 2016-05-12 | 2016-07-20 | 东莞市联洲知识产权运营管理有限公司 | Preparation method for high-strength high-electromagnetic-shielding magnesium-based composite material |
| CN106929723A (en) * | 2017-04-10 | 2017-07-07 | 广西科技大学 | A kind of high damping properties magnesium base alloy mechanical material and preparation method thereof |
| CN107185987A (en) * | 2017-05-16 | 2017-09-22 | 西安工程大学 | A kind of flat extruding cylinder sheet material Extrusion Die Design method |
| CN110343922A (en) * | 2019-08-14 | 2019-10-18 | 西京学院 | A kind of magnesium tin alloy and its preparation method and application that human body is degradable |
| CN115821136A (en) * | 2022-12-12 | 2023-03-21 | 吉林大学 | Low-alloy-content Jiang Suxing magnesium alloy and preparation method thereof |
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| JPS62243735A (en) * | 1986-04-16 | 1987-10-24 | Kobe Steel Ltd | Vibration damping mg alloy having superior castability |
| JPS6360252A (en) * | 1986-08-29 | 1988-03-16 | Kobe Steel Ltd | Mg alloy undergoing small dimensional change and its manufacture |
| JPH0247238A (en) * | 1988-08-08 | 1990-02-16 | Nippon Telegr & Teleph Corp <Ntt> | High-damping alloy and its production |
| CN1587430A (en) * | 2004-08-12 | 2005-03-02 | 上海交通大学 | Deformed magnesium alloy and its casting and deforming processing process |
| CN1257992C (en) * | 2004-09-29 | 2006-05-31 | 上海交通大学 | Preparation of high-strength deforming magnesium alloy |
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- 2006-07-26 CN CNB2006100103268A patent/CN100463989C/en not_active Expired - Fee Related
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| CN101660034B (en) * | 2009-09-23 | 2011-03-30 | 江苏大学 | Preparation method of texture controllable fine grain metal material based on large strain deformation and recrystallization |
| CN101805864A (en) * | 2010-04-06 | 2010-08-18 | 重庆大学 | High-damping and high-strength Mg-Cu-Mn-Zn-Y alloy and manufacturing method thereof |
| CN101892445A (en) * | 2010-07-07 | 2010-11-24 | 中南大学 | Method for preparing magnesium alloy bar with superhigh intensity by powerful deformation |
| CN104690496A (en) * | 2013-12-04 | 2015-06-10 | 青岛润鑫伟业科贸有限公司 | Cold processing technological method for refining metal grains |
| CN103882273A (en) * | 2014-04-18 | 2014-06-25 | 重庆大学 | Mg-Mn wrought magnesium alloy and preparation method thereof |
| CN103882273B (en) * | 2014-04-18 | 2016-05-11 | 重庆大学 | A kind of Mg-Mn wrought magnesium alloy and preparation method thereof |
| CN105586553A (en) * | 2016-03-18 | 2016-05-18 | 成都青元泛镁科技有限公司 | Magnesium alloy stepped cooling multi-direction forging process |
| CN105779918A (en) * | 2016-05-12 | 2016-07-20 | 东莞市联洲知识产权运营管理有限公司 | Preparation method for high-strength high-electromagnetic-shielding magnesium-based composite material |
| CN106929723A (en) * | 2017-04-10 | 2017-07-07 | 广西科技大学 | A kind of high damping properties magnesium base alloy mechanical material and preparation method thereof |
| CN107185987A (en) * | 2017-05-16 | 2017-09-22 | 西安工程大学 | A kind of flat extruding cylinder sheet material Extrusion Die Design method |
| CN110343922A (en) * | 2019-08-14 | 2019-10-18 | 西京学院 | A kind of magnesium tin alloy and its preparation method and application that human body is degradable |
| CN115821136A (en) * | 2022-12-12 | 2023-03-21 | 吉林大学 | Low-alloy-content Jiang Suxing magnesium alloy and preparation method thereof |
| CN115821136B (en) * | 2022-12-12 | 2024-03-22 | 吉林大学 | Low-alloy-content high-strength plastic magnesium alloy and preparation method thereof |
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