CN103074528B - Ultrasonic in-situ synthesis method for preparing rare earth heat-resistant magnesium alloy - Google Patents
Ultrasonic in-situ synthesis method for preparing rare earth heat-resistant magnesium alloy Download PDFInfo
- Publication number
- CN103074528B CN103074528B CN201210346060.XA CN201210346060A CN103074528B CN 103074528 B CN103074528 B CN 103074528B CN 201210346060 A CN201210346060 A CN 201210346060A CN 103074528 B CN103074528 B CN 103074528B
- Authority
- CN
- China
- Prior art keywords
- magnesium alloy
- ultrasonic
- rare earth
- melt
- situ synthesis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
An ultrasonic in-situ synthesis method for preparing a rare earth heat-resistant magnesium alloy. The preparation method is characterized by comprising the following steps: heating a magnesium alloy ingot in a crucible to a melt state; adding a Mg-Sm intermediate alloy into the magnesium alloy melt at a temperature of 720 DEG C-780 DEG C; then stretching an ultrasonic amplitude-change pole into the magnesium alloy melt; subjecting the magnesium alloy melt to ultrasonic treatment with power of 600-1200W for 10-15min; cooling the melt to 670 DEG C-680 DEG C; and continuously subjecting the magnesium alloy melt to ultrasound treatment for 8-10min. The invention has the following technical effects: the rare earth heat-resistant magnesium alloy prepared by the method provided by the invention has small grains in tissues, and uniformly distributed Al2Sm particles with small particle size; besides, the process is simple, safe, reliable, convenient for operation and free of three wastes.
Description
Technical field
The present invention relates to a kind of method preparing Heat Resistant Rare Earth-magnesium Alloy with ultrasonic in-situ synthesis
Background technology
Magnesium alloy is the lightest applicable structural metallic materials at present, have that density is low, the advantage such as specific tenacity and specific rigidity is high, damping vibration attenuation excellent performance, thermal conductivity are good, easy recovery, there are extremely important using value and wide application prospect in fields such as aerospace, automobile making, household electrical appliances instrument, telecommunications, biomedicines, are described as " 21 century green engineering material ".Due to shortcomings such as the resistance toheat of magnesium alloy are poor, creep strength is low, also limit the further application of magnesium alloy to a certain extent.When use temperature or envrionment temperature raise, intensity and the creep-resistant property of magnesium alloy significantly decline, and make it be difficult to be applied even more extensively in the industry such as, automobile large in aviation, boat as vital part (component as in engine) material.Therefore, the research and development of heat-resistant deforming magnesium alloy have become one of important directions in world's Magnesium Industry.
The research of heat resistance magnesium alloy starts from mid-term in 20th century in the world, through the development of many decades, the design theory of heat resistance magnesium alloy is perfect gradually, defines to carry out alloying by adding rare earth, alkaline earth, Si and other elements and form the design philosophy that the high strengthening phase of thermostability improves magnesium alloy resistance toheat.Rare earth is generally considered and improves magnesium alloy resistance toheat the most directly and the most effective alloying element, wherein, the atomic size of Sm and magnesium is close, solid solubility (being 5.8% to the maximum) in magnesium is larger than La, Ce, Pr, Nd, can the strengthening effects such as solution strengthening be realized, thus improve the resistance toheat of magnesium alloy.Thus, the remarkable effect of rare earth element Sm in heat resistance magnesium alloy causes the attention of numerous investigator gradually.
Research finds: Al
2sm intermetallic compound effectively can improve room temperature and the high-temperature behavior of magnesium alloy, but after rare earth element Sm content reaches 1-2wt%, Al
2the quantity of Sm phase increases gradually, size is constantly grown up and is tending towards segregation, and the Properties of High Temperature Creep of magnesium alloy is declined.Ultrasonic in-situ synthesis is the novel method that a kind of latest developments get up to prepare high performance material; its principle utilizes between different element or chemicals chemical reaction to occur under certain condition; and in metallic matrix, generate one or more ceramic phases or particle or intermetallic compound; and under the sound cavitation effect and acoustic streaming effect effect of high-energy ultrasonic; the pattern of remarkable improvement and refinement enhanced granule and size; improve enhanced granule uniformly dispersed in the melt, to reach the object improving alloy property.
The application of ultrasonic original position in the heat resistance magnesium alloy containing Sm, also can promote that it is dispersed by the effective generated in-situ strengthening phase of refinement, be expected to the Properties of High Temperature Creep improving magnesium alloy further.
Summary of the invention
The object of this invention is to provide a kind of method preparing Heat Resistant Rare Earth-magnesium Alloy with ultrasonic in-situ synthesis, its feature preparation method is: magnesium alloy ingot is put into crucible and be heated to fusing, when temperature 750 DEG C ~ 780 DEG C, Mg-Sm master alloy is joined in melt, again ultrasonic amplitude transformer is stretched in magnesium alloy fused mass, be under the condition of 800 ~ 1200W at ultrasonic power, ultrasonic 10 ~ 15min; Melt temperature is down to 670 DEG C ~ 680 DEG C, continues ultrasonic 8 ~ 10min, casting sampling.
The present invention is achieved like this, and magnesium alloy ingot is put into crucible and is heated to fusing, when temperature 750 DEG C ~ 780 DEG C, Mg-Sm master alloy is joined in melt, stretching in magnesium alloy fused mass by ultrasonic amplitude transformer again, is under the condition of 800 ~ 1200W at ultrasonic power, ultrasonic 10 ~ 15min; Melt temperature is down to 670 DEG C ~ 680 DEG C, continues ultrasonic 8 ~ 10min, casting sampling.Wherein magnesium alloy composition is (massfraction): Al:5.9-10.2%, Mn:0.4-0.8%, and rare earth element Sm accounts for Heat Resistant Rare Earth-magnesium Alloy gross weight prepared by claim 1: 2.0-5.0%.
Technique effect of the present invention is: in the Heat Resistant Rare Earth-magnesium Alloy tissue adopting the present invention to obtain, crystal grain is tiny, the Al of generation
2sm particle size is tiny and be evenly distributed, and technique is simple, safe and reliable, easy to operate, and three-waste free pollution.
Accompanying drawing explanation
Fig. 1 is heat resistance magnesium alloy microstructure prepared by the present invention.
Fig. 2 is Al in the heat resistance magnesium alloy prepared of the present invention
2the distribution situation of Sm.
Embodiment
Ultrasonic in-situ synthesis prepares Heat Resistant Rare Earth-magnesium Alloy:
Embodiment 1: magnesium alloy ingot is put into crucible and be heated to fusing, when temperature is 750 DEG C, by with the coated Mg-15%Sm(massfraction of aluminium-foil paper) master alloy joins (wherein Sm accounts for 3% of final Heat Resistant Rare Earth-magnesium Alloy gross weight) in melt, again ultrasonic amplitude transformer is stretched in magnesium alloy fused mass, be under the condition of 1000W at ultrasonic power, ultrasonic 10min; Melt temperature is down to 680 DEG C, continues ultrasonic 8min, casting sampling.
Embodiment 2: magnesium alloy ingot is put into crucible and be heated to fusing, when temperature is 780 DEG C, by with the coated Mg-40%Sm(massfraction of aluminium-foil paper) master alloy joins (wherein Sm accounts for 2% of final Heat Resistant Rare Earth-magnesium Alloy gross weight) in melt, again ultrasonic amplitude transformer is stretched in magnesium alloy fused mass, be under the condition of 800W at ultrasonic power, ultrasonic 15min; Melt temperature is down to 670 DEG C, continues ultrasonic 10min, casting sampling.
Embodiment 3: magnesium alloy ingot is put into crucible and be heated to fusing, when temperature is 780 DEG C, by Mg-20%Sm(massfraction) master alloy joins (wherein Sm accounts for 5% of final Heat Resistant Rare Earth-magnesium Alloy gross weight) in melt, again ultrasonic amplitude transformer is stretched in magnesium alloy fused mass, be under the condition of 900W at ultrasonic power, ultrasonic 12min; Melt temperature is down to 680 DEG C, continues ultrasonic 8min, casting sampling.
As shown in Figure 1, obvious dendritic crystal state is not had to occur in the heat resistance magnesium alloy tissue obtained under embodiment 2 condition, Mg
17al
12obtain significant refinement mutually.
As shown in Figure 2, under high-energy ultrasonic, reaction generates tiny in a large number and equally distributed Al
2sm particle.The white punctate substance generated as we can see from the figure is mainly distributed in crystals, and granular size is about 2-5
m.
Technique effect of the present invention is: in the Heat Resistant Rare Earth-magnesium Alloy tissue adopting the present invention to obtain, crystal grain is tiny, the Al of generation
2sm particle size is tiny and be evenly distributed, and technique is simple, safe and reliable, easy to operate, and three-waste free pollution.
Claims (1)
1. prepare the method for Heat Resistant Rare Earth-magnesium Alloy with ultrasonic in-situ synthesis for one kind, its feature preparation method is: magnesium alloy ingot is put into crucible and be heated to fusing, in described magnesium alloy, the massfraction of Al is the massfraction of 5.9 ~ 10.2%, Mn is 0.4 ~ 0.8%, and surplus is Mg; When temperature 750 DEG C ~ 780 DEG C, joined by Mg-Sm master alloy in above-mentioned alloy melt, its rare earth elements Sm accounts for 2.0 ~ 5.0% of alloy total mass mark; Stretching in magnesium alloy fused mass by ultrasonic amplitude transformer again, is under the condition of 800 ~ 1200W at ultrasonic power, ultrasonic 10 ~ 15min; Melt temperature is down to 670 DEG C ~ 680 DEG C, continues ultrasonic 8 ~ 10min, casting sampling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210346060.XA CN103074528B (en) | 2012-09-18 | 2012-09-18 | Ultrasonic in-situ synthesis method for preparing rare earth heat-resistant magnesium alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210346060.XA CN103074528B (en) | 2012-09-18 | 2012-09-18 | Ultrasonic in-situ synthesis method for preparing rare earth heat-resistant magnesium alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103074528A CN103074528A (en) | 2013-05-01 |
| CN103074528B true CN103074528B (en) | 2015-07-01 |
Family
ID=48151221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210346060.XA Expired - Fee Related CN103074528B (en) | 2012-09-18 | 2012-09-18 | Ultrasonic in-situ synthesis method for preparing rare earth heat-resistant magnesium alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103074528B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103924140B (en) * | 2014-03-26 | 2016-05-11 | 南昌大学 | A kind of nano aluminium oxide strengthens the preparation method of magnesium base composite material |
| CN104313370B (en) * | 2014-09-24 | 2016-08-24 | 华中科技大学 | A kind of refine the method for Nd-rich phase in magnesium-rare earth |
| CN107838387A (en) * | 2017-11-28 | 2018-03-27 | 上海航天精密机械研究所 | The method that ultrasonic assistant prepares ZM5 Mg alloy castings |
| CN109112376B (en) * | 2018-09-25 | 2020-07-14 | 南昌大学 | Preparation method of Mg-Al-Zn-Mn-Gd corrosion-resistant rare earth magnesium alloy |
| CN109385545B (en) * | 2018-09-25 | 2020-07-14 | 南昌大学 | Preparation method of ultrasonic Mg-Al-Zn-Mn-Nd corrosion-resistant rare earth magnesium alloy |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102618757B (en) * | 2012-04-13 | 2014-10-29 | 江汉大学 | Heat-resistant magnesium alloy |
-
2012
- 2012-09-18 CN CN201210346060.XA patent/CN103074528B/en not_active Expired - Fee Related
Non-Patent Citations (3)
| Title |
|---|
| 《Mg-Al-Zn-Sm 耐热镁合金的组织与力学性能》;黄正华等;《热加工工艺》;20120630(第12期);10-11 * |
| 《超声作用下原位反应制备MgZSi/AM60复合材料的显微组织》;吴庆捷 等;《机械工程材料》;20110731;第35卷(第7期);5-6 * |
| 徐河.《镁合金的分类、牌号、状态、化学成分与性能》.《镁合金制备与加工技术》.冶金工业出版社,2007, * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103074528A (en) | 2013-05-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103074528B (en) | Ultrasonic in-situ synthesis method for preparing rare earth heat-resistant magnesium alloy | |
| CN103074530B (en) | Preparation method of high-strength heat-resistant magnesium alloy | |
| AU2020101822A4 (en) | Mn-Cu-based damping alloy powder for use in selective laser melting process and preparation method thereof | |
| CN101381829B (en) | Method for preparing in-situ particle reinforced magnesium base compound material | |
| Li et al. | Microstructure and corrosion behavior of Al–10% Mg2Si cast alloy after heat treatment | |
| CN103146973B (en) | High-temperature-resistant rare earth magnesium alloy | |
| CN102787265A (en) | Microstructure refinement method for in-situ Mg2Si particle reinforced Mg-Al-Mn-Zn composite material | |
| CN103233182A (en) | Forming method for nanometer beta' phase element and nanometer oxide composite reinforced Fe-based ODS alloy | |
| CN103966506B (en) | A kind of iron-based noiseless alloy with high damping characteristic and preparation method thereof | |
| CN100554460C (en) | The preparation method of modification TiC/Ti6Al4V matrix material | |
| CN104004942A (en) | TiC particle-reinforced nickel-based composite material and preparation method thereof | |
| CN102943223A (en) | Preparation method of aluminum matrix composite with high heat conductivity coefficient under ultrasonic field | |
| CN103469027B (en) | A kind of rare-earth elements of lanthanum alloying aluminum silicon alloy and preparation method | |
| Li et al. | Effect of Re on microstructure and mechanical properties of γ/γʹ Co-Ti-based superalloys | |
| CN103131925B (en) | High-strength heat-resisting composite rare earth magnesium alloy | |
| CN109468496A (en) | A kind of heat-proof compression casting aluminium alloy and preparation method thereof | |
| CN104313371A (en) | Method for preparing magnesium matrix composite semisolid slurry by adopting ultrasonic in situ synthesis | |
| CN102912161A (en) | Method for preparing aluminum cerium intermediate alloy through high-intensity ultrasound | |
| CN104425092B (en) | A kind of neodymium-iron-boron magnetic material and preparation method thereof | |
| Popova et al. | Al-Ti-Zr master alloys: structure formation | |
| CN103451491B (en) | A kind of rare earth elements europium alloying aluminum silicon alloy and preparation method | |
| CN103146972B (en) | A kind of Multielement rare-earth magnesium alloy and preparation method thereof | |
| Zhang et al. | Effects of electric pulse current on the aging kinetics of 2219 aluminum alloy | |
| CN107502771A (en) | A kind of preparation method of nano-TiC particle reinforced aluminum matrix composites | |
| CN102212724A (en) | Al-Zr-B intermediate alloy as well as preparation method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150701 Termination date: 20150918 |
|
| EXPY | Termination of patent right or utility model |