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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- 229910000861 Mg alloy Inorganic materials 0.000 title claims abstract description 56
- 238000013016 damping Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims description 15
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 31
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 31
- 239000011777 magnesium Substances 0.000 claims abstract description 31
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052802 copper Inorganic materials 0.000 claims abstract description 20
- 239000010949 copper Substances 0.000 claims abstract description 20
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 18
- 239000000956 alloy Substances 0.000 claims abstract description 18
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 14
- 239000011572 manganese Substances 0.000 claims abstract description 14
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 9
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000001192 hot extrusion Methods 0.000 claims abstract description 8
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 8
- 239000010703 silicon Substances 0.000 claims abstract description 8
- 238000002360 preparation method Methods 0.000 claims abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 21
- 238000001125 extrusion Methods 0.000 claims description 18
- 238000010274 multidirectional forging Methods 0.000 claims description 17
- 229910052742 iron Inorganic materials 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 239000012535 impurity Substances 0.000 claims description 9
- 229910052759 nickel Inorganic materials 0.000 claims description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 7
- 229910052684 Cerium Inorganic materials 0.000 claims description 6
- 239000000155 melt Substances 0.000 claims description 6
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 5
- 230000001186 cumulative effect Effects 0.000 claims description 5
- 229910017566 Cu-Mn Inorganic materials 0.000 claims description 4
- 229910017871 Cu—Mn Inorganic materials 0.000 claims description 4
- 238000003723 Smelting Methods 0.000 claims description 4
- 238000005242 forging Methods 0.000 claims description 4
- 229910018594 Si-Cu Inorganic materials 0.000 claims description 3
- 229910008465 Si—Cu Inorganic materials 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 229910000636 Ce alloy Inorganic materials 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 8
- 238000005275 alloying Methods 0.000 abstract description 4
- 239000007787 solid Substances 0.000 abstract description 2
- 239000006104 solid solution Substances 0.000 description 3
- 229910052727 yttrium Inorganic materials 0.000 description 3
- 239000007769 metal material Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 229910018137 Al-Zn Inorganic materials 0.000 description 1
- 229910018573 Al—Zn Inorganic materials 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003562 lightweight material Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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Abstract
高强韧高阻尼变形镁合金及其制备方法，涉及一种具有高阻尼和优良力学性能的镁基材料及其制备方法。为了解决镁合金的阻尼性能与力学性能的矛盾，本发明提出了向纯镁中添加固溶度小的铜和硅等合金元素，减少位错弱钉扎点的数量，提高阻尼性能；添加锆和锰等细化晶粒的合金元素，提高合金力学性能。不仅对铸锭进行常规热挤压，还进行强烈塑性变形(ECAP，MDF)，调整晶粒取向，并得到超细晶组织，同时提高强韧性和阻尼性能。本发明成功地解决了镁合金的强度与阻尼性能的矛盾，且所用设备均为通用设备，可移植性强，成本低廉，具有广泛的应用前景。A high-strength, high-toughness, high-damping deformable magnesium alloy and a preparation method thereof relate to a magnesium-based material with high damping and excellent mechanical properties and a preparation method thereof. In order to solve the contradiction between the damping performance and mechanical properties of magnesium alloys, the present invention proposes to add alloy elements such as copper and silicon with low solid solubility to pure magnesium to reduce the number of dislocation weak pinning points and improve the damping performance; adding zirconium Alloying elements such as manganese and manganese to refine grains improve the mechanical properties of the alloy. Not only the conventional hot extrusion is performed on the ingot, but also the strong plastic deformation (ECAP, MDF) is carried out to adjust the grain orientation and obtain an ultra-fine grain structure, while improving the strength, toughness and damping performance. The invention successfully solves the contradiction between the strength and damping performance of the magnesium alloy, and the equipment used is all general equipment, has strong portability, low cost, and has wide application prospects.
Description
技术领域technical field
本发明涉及一种具有高阻尼和优良力学性能的镁基材料及其制备方法。The invention relates to a magnesium-based material with high damping and excellent mechanical properties and a preparation method thereof.
背景技术Background technique
实用金属材料中，镁及其合金密度最低，被誉为21世纪的超轻量材料。二十世纪九十年代后，随着镁冶炼技术的发展，镁产量迅速增加、价格下降，特别是汽车、电子、通信、宇航和国防军事工业等领域对镁合金需求的日益增加，带来了新一轮镁的研究和应用高潮。除密度低外，镁还有另外一个显著特点：在所有的轻金属材料中，纯镁具有最高的阻尼性能。但是纯镁的强度太低。而实用的结构镁合金，如Mg-Al-Zn、Mg-Zn-Zr以及Mg-RE-Zr等系列的镁合金，其强化机制主要为固溶强化、析出强化等，这些固溶的溶质原子和析出相作为镁基面滑移位错的强钉扎点，导致阻尼性能大大降低。随着镁合金研究的发展以及应用领域的拓展，解决阻尼性能和力学性能之间的矛盾，开发同时具有高阻尼和优良力学性能的镁基材料是一个有待解决的重要问题。Among practical metal materials, magnesium and its alloys have the lowest density, and are known as ultra-lightweight materials in the 21st century. After the 1990s, with the development of magnesium smelting technology, the output of magnesium increased rapidly and the price dropped, especially the increasing demand for magnesium alloys in the fields of automobiles, electronics, communications, aerospace and national defense military industries, which brought A new round of magnesium research and application climax. In addition to its low density, magnesium has another remarkable feature: Of all light metal materials, pure magnesium has the highest damping properties. But the strength of pure magnesium is too low. However, practical structural magnesium alloys, such as Mg-Al-Zn, Mg-Zn-Zr and Mg-RE-Zr series of magnesium alloys, mainly have solid solution strengthening, precipitation strengthening, etc., and these solid solution solute atoms And the precipitated phase acts as a strong pinning point for the slip dislocation of the magnesium basal plane, resulting in a greatly reduced damping performance. With the development of magnesium alloy research and the expansion of application fields, it is an important issue to solve the contradiction between damping performance and mechanical properties, and to develop magnesium-based materials with high damping and excellent mechanical properties at the same time.
发明内容Contents of the invention
本发明通过添加合适的合金元素、采用特定的熔炼工艺、变形工艺和热处理工艺制备出高强韧高阻尼变形镁合金，解决了镁合金的阻尼性能与力学性能的矛盾。The invention prepares a deformed magnesium alloy with high strength, toughness and high damping by adding suitable alloy elements and adopting specific smelting process, deformation process and heat treatment process, and solves the contradiction between the damping performance and the mechanical performance of the magnesium alloy.
本发明的高强韧高阻尼变形镁合金可以有如下三种配比：The high-strength, toughness and high-damping deformable magnesium alloy of the present invention can have the following three proportions:
(1)Mg-Zr-Cu-Mn镁合金：所述镁合金包括镁、锆、铜和锰，各组分的配比(重量百分比)为：锆0.2～1.0％、铜0.05～0.5％、锰0.05～1.5％、Fe＜0.003％，Ni＜0.003％，其它杂质＜0.06％，余量为镁。(1) Mg-Zr-Cu-Mn magnesium alloy: said magnesium alloy includes magnesium, zirconium, copper and manganese, and the proportioning (percentage by weight) 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 impurities<0.06%, and the balance is magnesium.
(2)Mg-Cu-Mn-Ce镁合金：所述镁合金包括镁、铜、锰和铈，各组分的配比(重量百分比)为：铜1～10％、锰0.3～8％、铈0.05～0.5％，Fe＜0.003％，Ni＜0.003％，其它杂质＜0.06％，余量为镁(2) Mg-Cu-Mn-Ce magnesium alloy: said magnesium alloy comprises magnesium, copper, manganese and cerium, and the proportioning (percentage by weight) of each component is: copper 1～10%, manganese 0.3～8%, Ce 0.05～0.5%, Fe<0.003%, Ni<0.003%, other impurities<0.06%, the rest is magnesium
(3)Mg-Si-Cu镁合金：所述镁合金包括镁、硅和铜，各组分的配比(重量百分比)为：硅0.5～5％、铜：0.2～3％，Fe＜0.003％，Ni＜0.003％，其它杂质＜0.06％，余量为镁。(3) Mg-Si-Cu magnesium alloy: the magnesium alloy includes magnesium, silicon and copper, and the proportioning (weight percentage) of each component is: silicon 0.5～5%, copper: 0.2～3%, Fe＜0.003 %, Ni<0.003%, other impurities<0.06%, and the balance is magnesium.
本发明按照如下方法制备高强韧高阻尼变形镁合金：a、熔炼：将纯度大于99.96％的工业高纯镁置于NaOH水溶液中浸泡，烘干后放入铁坩埚中熔化，保护气氛为10vol％ SF6+90vol％ CO2，升温至750～850℃，按照上述配比添加合金元素，充分搅拌熔体，静置后捞出熔体表面浮渣，降温至640～680℃浇铸到铁模具中；b、变形：将所熔炼的镁合金铸锭进行常规热挤压变形，控制挤压温度为320～400℃，保温时间为30分钟，挤压速度为50～120mm/min，挤压比为9～16∶1，对常规挤压变形后的镁合金进行强烈塑性变形；c、热处理：对变形后的镁合金进行热处理，控制热处理温度为150～350℃，保温时间为0.5～10小时。The present invention prepares high-strength, toughness, and high-damping deformable magnesium alloys according to the following method: a. Melting: soak industrial high-purity magnesium with a purity greater than 99.96% in NaOH aqueous solution, put it into an iron crucible after drying, and melt it, and the protective atmosphere is 10vol% SF 6 +90vol% CO 2 , raise the temperature to 750-850°C, add alloy elements according to the above ratio, fully stir the melt, remove the scum on the surface of the melt after standing still, cool down to 640-680°C and cast it into an iron mold; b , Deformation: The smelted magnesium alloy ingot is subjected to conventional hot extrusion deformation, the extrusion temperature is controlled at 320-400°C, the holding time is 30 minutes, the extrusion speed is 50-120mm/min, and the extrusion ratio is 9- 16:1, carry out strong plastic deformation on the magnesium alloy after conventional extrusion deformation; c, heat treatment: heat treatment on the deformed magnesium alloy, control the heat treatment temperature to 150-350°C, and the holding time to 0.5-10 hours.
本发明的优点在于：The advantages of the present invention are:
(1)成分优势：选用了铜和硅等在镁中固溶度极小的合金元素，根据位错阻尼理论，镁合金中的固溶原子浓度小，则可动位错的弱钉扎点数量少，合金的阻尼性能高；选用了锆和锰等细化晶粒的合金元素，提高镁合金的力学性能。(1) Compositional advantages: Alloying elements such as copper and silicon with very small solid solubility in magnesium are selected. According to the dislocation damping theory, the concentration of solid solution atoms in magnesium alloys is small, and the number of weak pinning points of movable dislocations Small amount, the alloy has high damping performance; alloy elements such as zirconium and manganese with fine grains are selected to improve the mechanical properties of the magnesium alloy.
(2)工艺优势：除常规热挤压外，还采用了强烈塑性变形工艺—等通道角挤压技术(ECAP)和多向锻造(MDF)，强烈塑性变形的显著特点为：在不改变材料的截面积的前提下，可对材料进行反复变形，累积应变量可超过10，细化材料组织，调整晶粒取向，获得大块的超细晶粒材料，显著增加材料的强度和塑性。(2) Process advantages: In addition to conventional hot extrusion, strong plastic deformation processes—equal channel angular extrusion (ECAP) and multi-directional forging (MDF) are also used. The salient features of strong plastic deformation are: without changing the material Under the premise of a certain cross-sectional area, the material can be deformed repeatedly, and the cumulative strain can exceed 10, refine the material structure, adjust the grain orientation, obtain large ultra-fine grain materials, and significantly increase the strength and plasticity of the material.
(3)设备优势：本发明所采用的设备，包括合金熔炼炉、热挤压机、等通道角挤压用压力机和热处理炉，均为常规通用设备，可移植性强，成本低廉。(3) Advantages of equipment: the equipment used in the present invention, including alloy smelting furnace, hot extrusion machine, press for equal channel angle extrusion and heat treatment furnace, are all conventional general-purpose equipment, with strong portability and low cost.
本方明制备的高强韧高阻尼变形镁合金的性能可达到的指标为：抗拉强度320～380Mpa，屈服强度230～260Mpa，延伸率＞10％，Q-1＞0.01。The attainable properties of the deformable magnesium alloy with high strength, toughness and high damping prepared by Fang Ming are: tensile strength 320-380Mpa, yield strength 230-260Mpa, elongation>10%, Q -1 >0.01.
具体实施方式Detailed ways
具体实施方式一：本实施方式的高强韧高阻尼变形镁合金为Mg-Zr-Cu-Mn合金，各组分的重量百分比为：锆0.2～1.0％、铜0.05～0.5％、锰0.05～1.5％、Fe＜0.003％，Ni＜0.003％，其它杂质＜0.06％，余量为镁。Embodiment 1: The high-strength, toughness, and high-damping deformable magnesium alloy of this embodiment is a Mg-Zr-Cu-Mn alloy, and the weight percentages of each component are: zirconium 0.2-1.0%, copper 0.05-0.5%, manganese 0.05-1.5% %, Fe<0.003%, Ni<0.003%, other impurities<0.06%, and the balance is magnesium.
具体实施方式二：本实施方式的高强韧高阻尼变形镁合金为Mg-Cu-Mn-Ce合金，各组分的重量百分比为：铜1～10％、锰0.3～8％、铈0.05～0.5％，Fe＜0.003％，Ni＜0.003％，其它杂质＜0.06％，余量为镁。Embodiment 2: The high-strength, toughness, and high-damping deformable magnesium alloy of this embodiment is a Mg-Cu-Mn-Ce alloy, and the weight percentages of each component are: copper 1-10%, manganese 0.3-8%, cerium 0.05-0.5% %, Fe<0.003%, Ni<0.003%, other impurities<0.06%, and the balance is magnesium.
具体实施方式三：本实施方式的高强韧高阻尼变形镁合金为Mg-Si-Cu合金，各组分的重量百分比为：硅0.5～5％、铜：0.2～3％，Fe＜0.003％，Ni＜0.003％，其它杂质＜0.06％，余量为镁。Embodiment 3: The high-strength, toughness, and high-damping deformable magnesium alloy of this embodiment is a Mg-Si-Cu alloy, and the weight percentages of each component are: silicon 0.5-5%, copper: 0.2-3%, Fe<0.003%, Ni<0.003%, other impurities<0.06%, and the balance is magnesium.
具体实施方式四：本实施方式按照如下方法制备Mg-Zr-Cu-Mn镁合金：Specific embodiment four: This embodiment prepares Mg-Zr-Cu-Mn magnesium alloy according to the following method:
(1)将纯度大于99.96％的工业高纯镁置于浓度为0.5％的NaOH水溶液中浸泡0.5小时后，在150℃干燥箱中烘干；将干燥的纯镁放入铁坩埚中熔化，保护气氛为10vol％ SF6+90％ CO2，升温至750～850℃，按照重量百分比锆0.2～1.0％、铜0.05～0.5％、锰0.05～1.5％添加合金元素。其中锆和锰分别以Mg-25Zr、Mg-20Mn中间合金的形式加入；铜以工业纯单质的形式加入。添加合金元素后，充分搅拌熔体，静置20分钟，捞出熔体表面浮渣，降温至640～680℃浇铸到铁模具中。(1) Place the industrial high-purity magnesium with a purity greater than 99.96% in a 0.5% NaOH aqueous solution for 0.5 hours, then dry it in a drying oven at 150°C; put the dry pure magnesium into an iron crucible and melt it, and the protective atmosphere is 10vol% SF 6 +90% CO 2 , heat up to 750-850° C., add alloy elements according to weight percentage of 0.2-1.0% zirconium, 0.05-0.5% copper, and 0.05-1.5% manganese. Among them, zirconium and manganese are added in the form of Mg-25Zr and Mg-20Mn master alloy respectively; copper is added in the form of industrial pure element. After adding the alloying elements, stir the melt fully, let it stand for 20 minutes, remove the scum on the surface of the melt, lower the temperature to 640-680°C and cast it into an iron mold.
(2)将所熔炼的镁合金铸锭进行常规热挤压，热挤压是在水压机上进行的，挤压温度为320～400℃，保温时间30分钟，挤压速度为50～120mm/min，挤压比为9～16∶1。对常规挤压变形后的镁合金进行等通道角挤压变形(EqualChannel Angular Pressing，ECAP)，等通道角挤压模具的两通道间夹角为90°，变形温度为150～350℃，变形速度为20～60mm/min，变形道次为1～8次，每道次间镁合金沿轴线向同一方向旋转90°。(2) Perform conventional hot extrusion on the smelted magnesium alloy ingot. The hot extrusion is carried out on a hydraulic press, the extrusion temperature is 320-400°C, the holding time is 30 minutes, and the extrusion speed is 50-120mm/min , The extrusion ratio is 9-16:1. Equal Channel Angular Pressing (ECAP) is performed on the magnesium alloy after conventional extrusion deformation. 20-60mm/min, the deformation pass is 1-8 times, and the magnesium alloy is rotated 90° along the axis in the same direction between each pass.
(3)对挤压并等通道角挤压变形后的镁合金进行热处理，热处理温度为150～350℃，保温时间为0.5～10小时。镁合金的力学性能与阻尼性能见表1。(3) Carry out heat treatment to the magnesium alloy after extrusion and equal channel angular extrusion deformation, the heat treatment temperature is 150-350° C., and the holding time is 0.5-10 hours. The mechanical properties and damping properties of magnesium alloys are shown in Table 1.
具体实施方式五：本实施方式与具体实施方式四不同之处在于，对镁合金铸锭进行热挤压后，进行多向锻造(Multi-Directional Forging，MDF)，多向锻造温度为150～350℃，应变速率为1×10-3～3×10-2S-1。三轴(X，Y，Z)变形顺序为X→Y→Z，X，Y和Z三轴间夹角为90°且满足右手定则；每个方向锻造应变量为0.3～1.0，累积应变量为7～10。镁合金的力学性能与阻尼性能见表1。Embodiment 5: The difference between this embodiment and Embodiment 4 is that after hot extrusion of the magnesium alloy ingot, multi-directional forging (Multi-Directional Forging, MDF) is carried out, and the multi-directional forging temperature is 150-350 ℃, the strain rate is 1×10 -3 ~ 3×10 -2 S -1 . The three-axis (X, Y, Z) deformation sequence is X→Y→Z, the angle between X, Y and Z is 90° and meets the right-hand rule; the forging strain in each direction is 0.3-1.0, and the cumulative strain The variable is 7-10. The mechanical properties and damping properties of magnesium alloys are shown in Table 1.
具体实施方式六：本实施方式与具体实施方式四不同之处在于，纯镁熔融并升温至750～850℃后，按照重量百分比铜1～10％、锰0.3～8％、铈0.05～0.5％添加合金元素。其中锰和铈分别以Mg-20Mn、Mg-30Ce中间合金的形式加入；铜以工业纯单质的形式加入。镁合金的力学性能与阻尼性能见表1。Embodiment 6: The difference between this embodiment and Embodiment 4 is that after pure magnesium is melted and heated to 750-850°C, copper is 1-10%, manganese 0.3-8%, and cerium 0.05-0.5% by weight. Add alloying elements. Among them, manganese and cerium are added in the form of Mg-20Mn and Mg-30Ce master alloy respectively; copper is added in the form of industrial pure element. The mechanical properties and damping properties of magnesium alloys are shown in Table 1.
具体实施方式七：本实施方式与具体实施方式六不同之处在于，对镁合金铸锭进行热挤压后，进行多向锻造(Multi-Directional Forging，MDF)，多向锻造温度为150～350℃，应变速率为1×10-3～3×10-2S-1。三轴(X，Y，Z)变形顺序为X→Y→Z，X，Y和Z三轴间夹角为90°且满足右手定则；每个方向锻造应变量为0.3～1.0，累积应变量为7～10。镁合金的力学性能与阻尼性能见表1。Embodiment 7: The difference between this embodiment and Embodiment 6 is that after the magnesium alloy ingot is hot-extruded, multi-directional forging (Multi-Directional Forging, MDF) is carried out, and the multi-directional forging temperature is 150-350 ℃, the strain rate is 1×10 -3 ~ 3×10 -2 S -1 . The three-axis (X, Y, Z) deformation sequence is X→Y→Z, the angle between X, Y and Z is 90° and meets the right-hand rule; the forging strain in each direction is 0.3-1.0, and the cumulative strain The variable is 7-10. The mechanical properties and damping properties of magnesium alloys are shown in Table 1.
具体实施方式八：本实施方式与具体实施方式四不同之处在于，纯镁熔融并升温至750～850℃后，按照配比(重量百分比)硅0.5～5％、铜：0.2～3％添加合金元素。硅和铜以工业纯单质的形式加入。镁合金的力学性能与阻尼性能见表1。Embodiment 8: The difference between this embodiment and Embodiment 4 is that after pure magnesium is melted and heated to 750-850°C, silicon 0.5-5% and copper: 0.2-3% are added according to the proportion (weight percentage) alloy element. Silicon and copper are added in the form of industrially pure elements. The mechanical properties and damping properties of magnesium alloys are shown in Table 1.
具体实施方式九：本实施方式与具体实施方式八不同之处在于，对镁合金铸锭进行热挤压后，进行多向锻造(Multi-Directional Forging，MDF)，多向锻造温度为150～350℃，应变速率为1×10-3～3×10-2S-1。三轴(X，Y，Z)变形顺序为X→Y→Z，X，Y和Z三轴间夹角为90°且满足右手定则；每个方向锻造应变量为0.3～1.0，累积应变量为7～10。镁合金的力学性能与阻尼性能见表1。Embodiment 9: The difference between this embodiment and Embodiment 8 is that after the magnesium alloy ingot is hot-extruded, multi-directional forging (Multi-Directional Forging, MDF) is carried out, and the multi-directional forging temperature is 150-350 ℃, the strain rate is 1×10 -3 ~ 3×10 -2 S -1 . The three-axis (X, Y, Z) deformation sequence is X→Y→Z, the angle between X, Y and Z is 90° and meets the right-hand rule; the forging strain in each direction is 0.3-1.0, and the cumulative strain The variable is 7-10. The mechanical properties and damping properties of magnesium alloys are shown in Table 1.
表1高强韧高阻尼变形镁合金的力学性能与阻尼性能
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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 |
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