CN102719695A - Cu-Al-Mn memory alloy prepared by powder metallurgy method - Google Patents
Cu-Al-Mn memory alloy prepared by powder metallurgy method Download PDFInfo
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- CN102719695A CN102719695A CN2012102107146A CN201210210714A CN102719695A CN 102719695 A CN102719695 A CN 102719695A CN 2012102107146 A CN2012102107146 A CN 2012102107146A CN 201210210714 A CN201210210714 A CN 201210210714A CN 102719695 A CN102719695 A CN 102719695A
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Abstract
The invention discloses a Cu-Al-Mn memory alloy prepared by a powder metallurgy method and belongs to the field of powder metallurgy and Cu-Al-Mn memory alloys. The Cu-Al-Mn memory alloy is characterized by comprising, by weight, 10%-15% of Al, 2%-4% of Mn and the balance copper, the Cu-Al-Mn memory alloy comprises copper powder, aluminum powder and manganese powder in terms of material status, and granularity of each of the copper powder, the aluminum powder and the manganese powder ranges from 180 meshes to 230 meshes. The method includes: pouring the three types of weighed powder into a beaker prior to stirring by a glass rod for coarse mixing, intermixing for 9-11min, and pouring the powder into a star type mixer for uniform mixing for 9-10min; pressing the uniformly mixed powder on a bench type powder tabletting machine to cylindrical compacts with the diameter of 10mm, sintering the pressed compacts in a vacuum sintering furnace with the sintering vacuum degree of 10<-1>Pa and at the sintering temperature of 800 DEG C, 850 DEG C and 900 DEG C, and maintaining the temperature for 110-130min; and finally, measuring recovery rate of the sintered compacts.
Description
Technical field
The invention belongs to powder metallurgy and CuAlMn memorial alloy field, refer in particular to a kind of CuAlMn memorial alloy with the powder metallurgic method preparation.
Background technology
Powder metallurgic method is an important channel of development of new material, and not only the material property of preparation is high, more can be formed directly in high quality, complex-shaped part, is a kind of efficient, low consumption, energy-conservation Parts manufacturing technology.Shape memory alloy is a kind of material with great development potentiality; It also is one of focus of present material research; Wherein portioned product has possessed the condition of commercial scale prodn; Have good economic benefit and application prospect, be used for fields such as space flight and aviation, electronics, machinery, the energy, agricultural, medical science and articles for daily use.The more copper-based shape memory alloy of research is CuZnAl and CuAlNi alloy at present.The CuAlMn alloy is a kind of novel memorial alloy that grew up in recent years, advantage such as it has, and restorer is big, cold-forming property is good, high heat-resistant stability, cost are comparatively cheap.
At present traditional melt casting process is all adopted in the preparation of copper-based memory alloy mostly; Its method is simple; Technical maturity; But because the scaling loss of fusion process interalloy element or volatilization usually make its composition be difficult to control, this will cause the transformation temperature and the performance change of copper-based shape memory alloy to a great extent.Simultaneously, reason such as traditional shape memory alloy is thick owing to crystal grain, the snappiness anisotropic is big causes plasticity relatively poor, the cold working difficulty, this to a great extent limit its practical applications.Powder metallurgic method (P/M) can accurately be controlled the composition of copper-based shape memory alloy, and this provides a kind of new method for preparing copper-based memory alloy.
Based on above reason, the present invention develops a kind of CuAlMn memorial alloy with the powder metallurgic method preparation, and through inquiry, not seeing has related patent U.S. Patent No. to deliver.
Summary of the invention
The present invention develops a kind of CuAlMn memorial alloy with the powder metallurgic method preparation, and it is characterized by: the composition of CuAlMn memorial alloy is confirmed as weight percent, Al10%-15%, Mn2%-4%, Yu Weitong.Materials behavior is copper powder, aluminium powder and manganese powder, has measured the size-grade distribution of these three kinds of powder respectively with BT-9300H laser particle size distribution instrument, and granularity is the 180-230 order.Calculate the quality of Cu powder, Al powder and the Mn powder of needs according to the quantity of the size of base mould and required pressed compact.With AL204 precise electronic balance various powder are carried out weighing in its ratio, pour the powder that weighs up into beaker and carry out slightly mixing with the glass stick stirring, pour powder into star formula mixer mixing behind the slightly mixed 9-11min, mixing time is 9-11min.
The powder of mixing is pressed into the cylinder pressed compact that diameter is 10mm on desk-top powder compressing machine, the compacting pressed compact carries out on desk-top powder compressing machine.What pressing mode was selected is unidirectional compacting, and in the pressing process, former and bottom punch are motionless, only upper punch extrusion forming pressed compact.During the demoulding, former is motionless, and upper punch continues to move downward and ejects pressed compact, in addition, need on die wall, coat lubricant for the ease of the demoulding, and lubricant is a Graphite Powder 99.At specific mo(u)lding pressure is 580-620MPa, can press to such an extent that surface quality is good under the condition of pressurize 1.5-2.5min, does not have crackle cylinder pressed compact.The pressed compact of being suppressed is carried out sintering in the GSL-1600X vacuum sintering furnace, sintering vacuum tightness is 10
-1Pa, sintering temperature is 800 ℃, 850 ℃ and 900 ℃ of three kinds of temperature, soaking time is 110-130min.
Metallographicobservation carries out on metaloscope.Sample is used the fine grinding of 10# abrasive paper for metallograph after adopting 20# sand paper corase grind again, and mechanical polishing then (is polishing fluid with the aluminium sesquioxide aqueous solution) no marking in the tracking view of sample corrodes with the iron trichloride aqueous hydrochloric acid at last.Place it on metaloscope after specimen preparation is good, the sample tissue of observing under the different states changes.
Fig. 1-the 3rd amplifies 500 times metallograph, can find out when sintering temperature is 800 ℃, and can see the particle of a lot of bulks on the metallograph, crystal grain is thick, and the alloying level of sintered compact is not high.When sintering temperature when being 850 ℃ and 900 ℃ this situation be improved significantly.The obvious refinement of sample crystal grain that goes out with 850 ℃ of sintering, and have needle type martensite to occur.The further refinement of crystal grain when sintering temperature is raised to 900 ℃, martensitic quantity is showed increased also.
Choose each one on the sample that 800 ℃, 850 ℃, 900 ℃ sintering go out, with the height of vernier caliper measurement sample.Then sample is placed on and slowly is pressurized to the 4MPa pressurize under the tabletting machine and takes out sample after five minutes, sample produces deformation, measures the height of sample once more.The sample that produces deformation is put into chamber type electric resistance furnace be heated to 580 ℃, take out sample behind the insulation 1h, treat to measure its height behind the sample cool to room temperature.Experimental result is as shown in table 1.
Data presentation in the table 1: resilience does not take place in the sample that goes out for 800 ℃ of sintering, because heating makes the more open powder combination of script bonded tightr once more, its height descends on the contrary, and memory-less effect is described.It is 14.3% that the sample response rate that 850 ℃ of sintering go out reaches 25%, 900 ℃ sintered specimen response rate, explains with 850 ℃ of sintering temperature effects preferably, and response rate is the highest, explains that memory effect is best.
Before and after table 1 pressurization and relation response rate
Description of drawings
Metallograph (the magnification: 500) of the sample that 800 ℃ of sintering of Fig. 1 go out
Metallograph (the magnification: 500) of the sample that 850 ℃ of sintering of Fig. 2 go out
Metallograph (the magnification: 500) of the sample that 900 ℃ of sintering of Fig. 3 go out
Embodiment
Embodiment 1
The composition of CuAlMn memorial alloy is confirmed as weight percent, Al10%, Mn4%, Yu Weitong.Materials behavior is copper powder, aluminium powder and manganese powder, and granularity is the 180-230 order.The quality that calculates Cu powder, Al powder and the Mn powder of needs according to the quantity of the size of base mould and required pressed compact amounts to 0.85Kg.With AL204 precise electronic balance various powder are carried out weighing in its ratio, pour the powder that weighs up into beaker and carry out slightly mixing with the glass stick stirring, pour powder into star formula mixer mixing behind the slightly mixed 10min, mixing time is 10min.The powder of mixing is pressed into the cylinder pressed compact that diameter is 10mm on desk-top powder compressing machine, need on die wall, coats lubricant, lubricant Graphite Powder 99 for the ease of the demoulding.At specific mo(u)lding pressure is 600MPa, can press to such an extent that surface quality is good under the condition of pressurize 2min, does not have crackle cylinder pressed compact.The pressed compact of being suppressed is carried out sintering in the GSL-1600X vacuum sintering furnace, sintering vacuum tightness is 10
-1Pa, sintering temperature is 850 ℃, soaking time is 120min.
The sample that 850 ℃ of sintering are gone out is with the height of vernier caliper measurement sample, then sample is placed on slowly to be pressurized to the 4MPa pressurize under the tabletting machine and to take out sample after five minutes, and sample produces deformation, measures the height of sample once more.The sample that produces deformation is put into chamber type electric resistance furnace be heated to 580 ℃, take out sample behind the insulation 1h, treat to measure its height behind the sample cool to room temperature, the sample response rate that 850 ℃ of sintering go out reaches 25%.
Embodiment 2
The composition of CuAlMn memorial alloy is confirmed as weight percent, Al15%, Mn2%, Yu Weitong.Materials behavior is copper powder, aluminium powder and manganese powder, and granularity is the 180-230 order.The quality that calculates Cu powder, Al powder and the Mn powder of needs according to the quantity of the size of base mould and required pressed compact amounts to 0.85Kg.With AL204 precise electronic balance various powder are carried out weighing in its ratio, pour the powder that weighs up into beaker and carry out slightly mixing with the glass stick stirring, pour powder into star formula mixer mixing behind the slightly mixed 10min, mixing time is 10min.The powder of mixing is pressed into the cylinder pressed compact that diameter is 10mm on desk-top powder compressing machine, need on die wall, coats lubricant, lubricant Graphite Powder 99 for the ease of the demoulding.At specific mo(u)lding pressure is 600MPa, can press to such an extent that surface quality is good under the condition of pressurize 2min, does not have crackle cylinder pressed compact.The pressed compact of being suppressed is carried out sintering in the GSL-1600X vacuum sintering furnace, sintering vacuum tightness is 10
-1Pa, sintering temperature is 900 ℃, soaking time is 120min.
The sample that 900 ℃ of sintering are gone out is with the height of vernier caliper measurement sample, then sample is placed on slowly to be pressurized to the 4MPa pressurize under the tabletting machine and to take out sample after five minutes, and sample produces deformation, measures the height of sample once more.The sample that produces deformation is put into chamber type electric resistance furnace be heated to 580 ℃, take out sample behind the insulation 1h, treat to measure its height behind the sample cool to room temperature, the sample response rate that 900 ℃ of sintering go out reaches 14.3%.
Claims (4)
1. CuAlMn memorial alloy with powder metallurgic method preparation, it is characterized by: the composition of CuAlMn memorial alloy is confirmed as weight percent, Al10%-15%, Mn2%-4%, Yu Weitong; Materials behavior is copper powder, aluminium powder and manganese powder, has measured the size-grade distribution of these three kinds of powder respectively with BT-9300H laser particle size distribution instrument, and granularity is the 180-230 order; Calculate the quality of Cu powder, Al powder and the Mn powder of needs according to the quantity of the size of base mould and required pressed compact; With AL204 precise electronic balance various powder are carried out weighing in its ratio; Pouring the powder that weighs up into beaker carries out slightly mixing with the glass stick stirring; Pour powder into star formula mixer mixing behind the thick mixed 9-11min, mixing time is 9-10min; The powder of mixing is pressed into the cylinder pressed compact that diameter is 10mm on desk-top powder compressing machine, in addition, need on die wall, coats lubricant for the ease of the demoulding, lubricant is a Graphite Powder 99; At specific mo(u)lding pressure is 580-620MPa, can press to such an extent that surface quality is good under the condition of pressurize 1.5-2.5min, does not have crackle cylinder pressed compact; The pressed compact of being suppressed is carried out sintering in the GSL-1600X vacuum sintering furnace, sintering vacuum tightness is 10
-1Pa, sintering temperature is 800 ℃, 850 ℃ and 900 ℃ of three kinds of temperature, soaking time is 110-130min; Choose each one on the sample that 800 ℃, 850 ℃, 900 ℃ sintering go out, with the height of vernier caliper measurement sample; Then sample is placed on and slowly is pressurized to the 4MPa pressurize under the tabletting machine and takes out sample after five minutes, sample produces deformation, measures the height of sample once more; The sample that produces deformation is put into chamber type electric resistance furnace be heated to 580 ℃, take out sample behind the insulation 1h, treat to measure its height behind the sample cool to room temperature.
2. according to the said a kind of CuAlMn memorial alloy with the powder metallurgic method preparation of claim 1, pour the powder that weighs up into beaker and carry out slightly mixing with the glass stick stirring, pour powder into star formula mixer mixing behind the slightly mixed 10min, mixing time is that 10min is optimum.
3. according to the said a kind of CuAlMn memorial alloy of claim 1, be 600MPa, can obtain not have crackle under the condition of pressurize 2min, the cylinder pressed compact that surface quality is optimum at specific mo(u)lding pressure with the powder metallurgic method preparation.
4. according to the said a kind of CuAlMn memorial alloy with powder metallurgic method preparation of claim 1, when 850 ℃ of sintering temperatures, when soaking time was 120min, response rate reached 25% vertex.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104726729A (en) * | 2013-12-24 | 2015-06-24 | 湖南博云东方粉末冶金有限公司 | Method for adjusting pressing condition of hard alloy |
| CN105400985A (en) * | 2015-11-17 | 2016-03-16 | 安徽枫慧金属股份有限公司 | High-performance copper-based shape memory alloy temperature control part |
| CN105568019A (en) * | 2016-02-24 | 2016-05-11 | 河北工业大学 | Refining method for CuAlMn shape memory alloy grains |
| CN107228870A (en) * | 2017-06-05 | 2017-10-03 | 株洲钻石切削刀具股份有限公司 | A kind of cemented carbide powder EBSD method for making sample |
| CN109663907A (en) * | 2019-01-09 | 2019-04-23 | 北京科技大学 | A kind of preparation method of powder metallurgy high-strength copper aluminum material |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1664136A (en) * | 2004-03-04 | 2005-09-07 | 东北大学 | Expansion coefficient controllable copper base alloy with high conductivity and method for preparation thereof |
| WO2007026039A1 (en) * | 2005-08-31 | 2007-03-08 | Universidad Del Pais Vasco Euskal Herriko Unibertsitatea | Metal matrix material based on shape-memory alloy powders, production method thereof and use of same |
| JP2009052097A (en) * | 2007-08-28 | 2009-03-12 | Keiichi Araki | Damping member |
-
2012
- 2012-06-25 CN CN2012102107146A patent/CN102719695A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1664136A (en) * | 2004-03-04 | 2005-09-07 | 东北大学 | Expansion coefficient controllable copper base alloy with high conductivity and method for preparation thereof |
| WO2007026039A1 (en) * | 2005-08-31 | 2007-03-08 | Universidad Del Pais Vasco Euskal Herriko Unibertsitatea | Metal matrix material based on shape-memory alloy powders, production method thereof and use of same |
| JP2009052097A (en) * | 2007-08-28 | 2009-03-12 | Keiichi Araki | Damping member |
Non-Patent Citations (2)
| Title |
|---|
| 曹玲飞 等: "Cu-Al-Mn形状记忆合金的热循环特性", 《粉末冶金材料科学与工程》 * |
| 李静媛 等: "《特种金属材料及其加工技术》", 31 May 2010, 冶金工业出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104726729A (en) * | 2013-12-24 | 2015-06-24 | 湖南博云东方粉末冶金有限公司 | Method for adjusting pressing condition of hard alloy |
| CN105400985A (en) * | 2015-11-17 | 2016-03-16 | 安徽枫慧金属股份有限公司 | High-performance copper-based shape memory alloy temperature control part |
| CN105568019A (en) * | 2016-02-24 | 2016-05-11 | 河北工业大学 | Refining method for CuAlMn shape memory alloy grains |
| CN107228870A (en) * | 2017-06-05 | 2017-10-03 | 株洲钻石切削刀具股份有限公司 | A kind of cemented carbide powder EBSD method for making sample |
| CN109663907A (en) * | 2019-01-09 | 2019-04-23 | 北京科技大学 | A kind of preparation method of powder metallurgy high-strength copper aluminum material |
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Application publication date: 20121010 |